diff --git a/add-specs.py b/add-specs.py
new file mode 100755
index 00000000000000..5cc25bc7da6a1b
--- /dev/null
+++ b/add-specs.py
@@ -0,0 +1,230 @@
+#!/usr/bin/env python2
+import certifi
+import io
+import json
+import os.path
+import sys
+import time
+import urllib3
+from collections import OrderedDict
+from lxml.html import parse
+from termcolor import cprint
+from urlparse import urlparse
+
+
+def alarm(message):
+    cprint('Alarm: %s' % message, 'red', attrs=['bold'])
+
+
+def getAdjustedSpecURL(url):
+    if url.startswith('http://drafts.csswg.org/css-scoping/'):
+        return url.replace('http://drafts.csswg', 'https://drafts.csswg')
+    if url.startswith('https://drafts.csswg.org/css-logical-props/'):
+        return url.replace('/css-logical-props/', '/css-logical/')
+    if url.startswith('https://www.w3.org/TR/xpath-20/'):
+        return url.replace('/TR/xpath-20/', '/TR/xpath20/')
+    if url.startswith('https://w3c.github.io/input-events/index.html'):
+        return url.replace('/input-events/index.html', '/input-events/')
+    if url.startswith('https://w3c.github.io/webappsec-csp/embedded/'):
+        return url.replace('/webappsec-csp/embedded/', '/webappsec-cspee/')
+    if url.startswith('https://wicg.github.io/media-capabilities#'):
+        return url.replace('/media-capabilities#', '/media-capabilities/#')
+    if url.startswith('https://w3c.github.io/keyboard-lock#'):
+        return url.replace('/keyboard-lock#', '/keyboard-lock/#')
+    if url.startswith('https://dev.w3.org/geo/api/spec-source.html'):
+        return url.replace('https://dev.w3.org/geo/api/spec-source.html',
+                           'https://www.w3.org/TR/geolocation-API/')
+    if '/deviceorientation/spec-source-orientation.html' in url:
+        return url.replace('spec-source-orientation.html', '')
+    if 'spec.whatwg.org#' in url:
+        return url.replace('spec.whatwg.org#', 'spec.whatwg.org/#')
+    return url
+
+
+def isObsolete(url):
+    if url.startswith('https://www.w3.org/TR/REC-DOM-Level-1/'):
+        return True
+    if url.startswith('https://www.w3.org/TR/DOM-Level-2-'):
+        return True
+    if url.startswith('https://www.w3.org/TR/DOM-Level-3-Core/'):
+        return True
+    if url.startswith('https://www.w3.org/TR/ElementTraversal/'):
+        return True
+    if url.startswith('https://www.w3.org/TR/selectors-api/'):
+        return True
+    if url.startswith('https://dev.w3.org/2006/webapi/selectors-api2'):
+        return True
+    if url.startswith('https://w3c.github.io/webcomponents/spec/shadow/'):
+        return True
+    if url.startswith('https://w3c.github.io/staticrange/'):
+        return True
+    if url.startswith('https://www.w3.org/TR/dom/'):
+        return True
+    if url.startswith('https://w3c.github.io/microdata/'):
+        return True
+    if url.startswith('https://www.w3.org/TR/html5'):
+        return True
+    if url.startswith('https://www.ecma-international.org/'):
+        return True
+    if url.startswith('https://www.w3.org/TR/CSS1/'):
+        return True
+    if 'html401' in url:
+        return True
+    if 'developer.apple.com/library/safari' in url:
+        return True
+    if 'https://www.w3.org/TR/2014/WD-DOM-Level-3-Events-20140925/' in url:
+        return True
+    return False
+
+
+def getSpecURLsArray(mdn_url, sectionname, http):
+    url = 'https://developer.mozilla.org' + urlparse(mdn_url).path + \
+        '?raw&macros&section=' + sectionname
+    print 'Trying %s' % url
+    response = http.request('GET', url)
+    if response.status == 404:
+        return []
+    if response.status > 499:
+        sys.stderr.write('50x for %s. Will retry after 60s...\n' % url)
+        time.sleep(61)
+        print 'Retrying %s' % url
+        response = http.request('GET', url)
+        if response.status == 404:
+            return []
+        if response.status > 499:
+            sys.stderr.write('50x for %s. Giving up.\n' % url)
+            return []
+    html = response.data.decode('utf-8')
+    if html == '':
+        return []
+    try:
+        doc = parse(io.StringIO(unicode(html)))
+        rows = doc.xpath('//table[1]//tr[td]')
+        if not(rows):
+            return []
+        spec_urls = []
+        has_spec_url = False
+        for row in rows:
+            hrefs = row.xpath('td[1]//a/@href')
+            if not(hrefs):
+                continue
+            spec_url = hrefs[0].strip()
+            if isObsolete(spec_url):
+                continue
+            if not(urlparse(spec_url).fragment):
+                alarm(mdn_url + ' has spec URL with no fragment: ' + spec_url)
+                continue
+            if not(urlparse(spec_url).hostname):
+                alarm(mdn_url + ' has spec URL with no hostname: ' + spec_url)
+                continue
+            if has_spec_url:
+                cprint('Note:  ' + mdn_url + ' has multiple spec URLs', 'cyan')
+            spec_url = getAdjustedSpecURL(spec_url)
+            cprint('Adding %s' % (spec_url), 'green')
+            spec_urls.append(spec_url)
+            has_spec_url = True
+        return spec_urls
+    except Exception, e:
+        sys.stderr.write('Something went wrong: %s\n' % str(e))
+        return []
+
+
+def walkBaseData(basedata, filename, http, basename, sectionname,
+                 bcd_data):
+    for featurename in basedata:
+        feature_data = basedata[featurename]
+        path = '%s.%s.%s' % (sectionname, basename, featurename)
+        bcd_data[sectionname][basename][featurename] = \
+            processTarget(feature_data, filename, http, path)
+        for subfeaturename in feature_data:
+            subfeaturedata = feature_data[subfeaturename]
+            path = '%s.%s.%s.%s' % (sectionname, basename, featurename,
+                                    subfeaturename)
+            bcd_data[sectionname][basename][featurename][subfeaturename] = \
+                processTarget(subfeaturedata, filename, http, path)
+
+
+def processTarget(target, filename, http, path):
+    try:
+        if not('__compat' in target):
+            return target
+        target_data = target['__compat']
+        if not('mdn_url' in target_data):
+            if '_' not in path:
+                alarm('%s in %s has no mdn_url' % (path, filename))
+            return target
+        if target_data['status']['deprecated']:
+            return target
+        if 'spec_urls' in target_data:
+            if not(len(sys.argv) > 1 and sys.argv[1] == 'fullupdate'):
+                return target
+            else:
+                del target['__compat']['spec_urls']
+        if 'spec_url' in target_data:
+            if not(len(sys.argv) > 1 and sys.argv[1] == 'fullupdate'):
+                return target
+            else:
+                del target['__compat']['spec_url']
+        mdn_url = target_data['mdn_url']
+        spec_urls = getSpecURLsArray(mdn_url, 'Specifications', http)
+        if not(spec_urls):
+            spec_urls = getSpecURLsArray(mdn_url, 'Specification', http)
+        if not(spec_urls):
+            cprint('Note:  ' + mdn_url + ' has no spec URL', 'yellow')
+            return target
+        if len(spec_urls) == 1:
+            spec_urls = spec_urls[0]
+        target['__compat']['spec_url'] = spec_urls
+    except TypeError:
+        pass
+    return target
+
+
+def main():
+    http = urllib3.PoolManager(cert_reqs='CERT_REQUIRED',
+                               ca_certs=certifi.where())
+    dirnames = \
+        [
+            'api',
+            'css',
+            'html',
+            'http',
+            'javascript',
+            'mathml',
+            'svg',
+            'webdriver',
+            'xpath',
+            'xslt'
+        ]
+    if len(sys.argv) > 2:
+        dirnames = [sys.argv[2]]
+    for dirname in dirnames:
+        files = [os.path.join(dirpath, filename)
+                 for (dirpath, dirs, files)
+                 in os.walk(dirname)
+                 for filename in (dirs + files)]
+        files.sort()
+        for filename in files:
+            if os.path.splitext(filename)[1] != '.json':
+                continue
+            f = io.open(filename, 'r+', encoding='utf-8')
+            bcd_data = json.load(f, object_pairs_hook=OrderedDict)
+            for sectionname in bcd_data:
+                for basename in bcd_data[sectionname]:
+                    basedata = bcd_data[sectionname][basename]
+                    path = '%s.%s' % (sectionname, basename)
+                    path = sectionname + '.' + basename
+                    bcd_data[sectionname][basename] = \
+                        processTarget(basedata, filename, http, path)
+                    if basedata:
+                        walkBaseData(basedata, filename, http, basename,
+                                     sectionname, bcd_data)
+            f.seek(0)
+            f.write(unicode(json.dumps(bcd_data, indent=2,
+                                       separators=(',', ': '),
+                                       ensure_ascii=False) + '\n'))
+            f.truncate()
+            f.close()
+
+
+main()
diff --git a/javascript/builtins/Array.json b/javascript/builtins/Array.json
index 2f8c830bdba1c6..293379c98b44fb 100644
--- a/javascript/builtins/Array.json
+++ b/javascript/builtins/Array.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-array-objects"
         },
         "concat": {
           "__compat": {
@@ -105,7 +106,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.concat"
           }
         },
         "copyWithin": {
@@ -159,7 +161,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.copywithin"
           }
         },
         "entries": {
@@ -213,7 +216,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.entries"
           }
         },
         "every": {
@@ -267,7 +271,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.every"
           }
         },
         "fill": {
@@ -332,7 +337,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.fill"
           }
         },
         "filter": {
@@ -386,7 +392,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.filter"
           }
         },
         "find": {
@@ -451,7 +458,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.find"
           }
         },
         "findIndex": {
@@ -516,7 +524,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.findIndex"
           }
         },
         "flat": {
@@ -570,7 +579,8 @@
               "experimental": true,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/proposal-flatMap/#sec-Array.prototype.flat"
           }
         },
         "flatMap": {
@@ -624,7 +634,8 @@
               "experimental": true,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/proposal-flatMap/#sec-Array.prototype.flatMap"
           }
         },
         "forEach": {
@@ -678,7 +689,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.foreach"
           }
         },
         "from": {
@@ -732,7 +744,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.from"
           }
         },
         "includes": {
@@ -797,7 +810,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.includes"
           }
         },
         "indexOf": {
@@ -851,7 +865,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.indexof"
           }
         },
         "isArray": {
@@ -905,7 +920,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.isarray"
           }
         },
         "join": {
@@ -959,7 +975,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.join"
           }
         },
         "keys": {
@@ -1013,7 +1030,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.keys"
           }
         },
         "lastIndexOf": {
@@ -1067,7 +1085,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.lastindexof"
           }
         },
         "length": {
@@ -1121,7 +1140,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-properties-of-array-instances-length"
           }
         },
         "map": {
@@ -1175,7 +1195,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.map"
           }
         },
         "observe": {
@@ -1284,7 +1305,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.of"
           }
         },
         "pop": {
@@ -1338,7 +1360,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.pop"
           }
         },
         "prototype": {
@@ -1392,7 +1415,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype"
           }
         },
         "push": {
@@ -1446,7 +1470,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.push"
           }
         },
         "reduce": {
@@ -1500,7 +1525,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.reduce"
           }
         },
         "reduceRight": {
@@ -1554,7 +1580,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.reduceright"
           }
         },
         "reverse": {
@@ -1608,7 +1635,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.reverse"
           }
         },
         "shift": {
@@ -1662,7 +1690,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.shift"
           }
         },
         "slice": {
@@ -1716,7 +1745,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.slice"
           }
         },
         "some": {
@@ -1770,7 +1800,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.some"
           }
         },
         "sort": {
@@ -1824,7 +1855,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.sort"
           }
         },
         "splice": {
@@ -1878,7 +1910,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.splice"
           }
         },
         "toLocaleString": {
@@ -1932,7 +1965,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-array.prototype.tolocalestring",
+              "https://tc39.github.io/ecma402/#sup-array.prototype.tolocalestring"
+            ]
           },
           "locales": {
             "__compat": {
@@ -2148,7 +2185,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.tostring"
           }
         },
         "unobserve": {
@@ -2257,7 +2295,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.unshift"
           }
         },
         "values": {
@@ -2327,7 +2366,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype.values"
           }
         },
         "@@iterator": {
@@ -2409,7 +2449,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype-@@iterator"
           }
         },
         "@@species": {
@@ -2474,7 +2515,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-array-@@species"
           }
         },
         "@@unscopables": {
@@ -2528,7 +2570,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables"
           }
         }
       }
diff --git a/javascript/builtins/ArrayBuffer.json b/javascript/builtins/ArrayBuffer.json
index 5485ca383cd7a9..7d29d910e52f02 100644
--- a/javascript/builtins/ArrayBuffer.json
+++ b/javascript/builtins/ArrayBuffer.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-arraybuffer-constructor"
         },
         "new_required": {
           "__compat": {
@@ -159,7 +160,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-arraybuffer.prototype.bytelength"
           }
         },
         "isView": {
@@ -213,7 +215,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-arraybuffer.isview"
           }
         },
         "prototype": {
@@ -267,7 +270,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-arraybuffer.prototype"
           }
         },
         "slice": {
@@ -323,7 +327,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-arraybuffer.prototype.slice"
           }
         },
         "transfer": {
@@ -377,7 +382,8 @@
               "experimental": true,
               "standard_track": false,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://github.com/domenic/proposal-arraybuffer-transfer/#arraybufferprototypetransfer"
           }
         },
         "@@species": {
@@ -442,7 +448,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-arraybuffer-@@species"
           }
         }
       }
diff --git a/javascript/builtins/AsyncFunction.json b/javascript/builtins/AsyncFunction.json
index 187575d8830fc8..7cc5a89ccee67f 100644
--- a/javascript/builtins/AsyncFunction.json
+++ b/javascript/builtins/AsyncFunction.json
@@ -63,7 +63,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-async-function-objects"
         },
         "prototype": {
           "__compat": {
@@ -127,7 +128,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-async-function-constructor-prototype"
           }
         }
       }
diff --git a/javascript/builtins/Atomics.json b/javascript/builtins/Atomics.json
index 999a51952ab5ca..d4398644eb91cd 100644
--- a/javascript/builtins/Atomics.json
+++ b/javascript/builtins/Atomics.json
@@ -115,7 +115,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-atomics-object"
         },
         "add": {
           "__compat": {
@@ -231,7 +232,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.add"
           }
         },
         "and": {
@@ -348,7 +350,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.and"
           }
         },
         "compareExchange": {
@@ -465,7 +468,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.compareexchange"
           }
         },
         "exchange": {
@@ -582,7 +586,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.exchange"
           }
         },
         "isLockFree": {
@@ -699,7 +704,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.islockfree"
           }
         },
         "load": {
@@ -816,7 +822,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.load"
           }
         },
         "notify": {
@@ -989,7 +996,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.notify"
           }
         },
         "or": {
@@ -1106,7 +1114,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.or"
           }
         },
         "store": {
@@ -1223,7 +1232,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.store"
           }
         },
         "sub": {
@@ -1340,7 +1350,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.sub"
           }
         },
         "wait": {
@@ -1483,7 +1494,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.wait"
           }
         },
         "xor": {
@@ -1600,7 +1612,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-atomics.xor"
           }
         }
       }
diff --git a/javascript/builtins/Boolean.json b/javascript/builtins/Boolean.json
index 64f12e0d2001f8..01193e63fb467f 100644
--- a/javascript/builtins/Boolean.json
+++ b/javascript/builtins/Boolean.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-boolean-objects"
         },
         "prototype": {
           "__compat": {
@@ -105,7 +106,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-boolean.prototype"
           }
         },
         "toSource": {
@@ -213,7 +215,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-boolean.prototype.tostring"
           }
         },
         "valueOf": {
@@ -267,7 +270,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-boolean.prototype.valueof"
           }
         }
       }
diff --git a/javascript/builtins/DataView.json b/javascript/builtins/DataView.json
index 644ee72e288cc0..f3c410d205f1ee 100644
--- a/javascript/builtins/DataView.json
+++ b/javascript/builtins/DataView.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-dataview-constructor"
         },
         "new_required": {
           "__compat": {
@@ -213,7 +214,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-dataview.prototype.buffer"
           },
           "sharedarraybuffer_support": {
             "__compat": {
@@ -321,7 +323,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-dataview.prototype.bytelength"
           }
         },
         "byteOffset": {
@@ -375,7 +378,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-dataview.prototype.byteoffset"
           }
         },
         "getFloat32": {
@@ -429,7 +433,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.getfloat32"
           }
         },
         "getFloat64": {
@@ -483,7 +488,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.getfloat64"
           }
         },
         "getInt16": {
@@ -537,7 +543,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.getint16"
           }
         },
         "getInt32": {
@@ -591,7 +598,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.getint32"
           }
         },
         "getInt8": {
@@ -645,7 +653,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.getint8"
           }
         },
         "getUint16": {
@@ -699,7 +708,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.getuint16"
           }
         },
         "getUint32": {
@@ -753,7 +763,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.getuint32"
           }
         },
         "getUint8": {
@@ -807,7 +818,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.getuint8"
           }
         },
         "setFloat32": {
@@ -861,7 +873,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.setfloat32"
           }
         },
         "setFloat64": {
@@ -915,7 +928,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.setfloat64"
           }
         },
         "setInt16": {
@@ -969,7 +983,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.setint16"
           }
         },
         "setInt32": {
@@ -1023,7 +1038,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.setint32"
           }
         },
         "setInt8": {
@@ -1077,7 +1093,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.setint8"
           }
         },
         "setUint16": {
@@ -1131,7 +1148,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.setuint16"
           }
         },
         "setUint32": {
@@ -1185,7 +1203,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.setuint32"
           }
         },
         "setUint8": {
@@ -1239,7 +1258,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype.setuint8"
           }
         },
         "prototype": {
@@ -1293,7 +1313,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-dataview.prototype"
           }
         }
       }
diff --git a/javascript/builtins/Date.json b/javascript/builtins/Date.json
index cd23d507294446..2e534ac2880475 100644
--- a/javascript/builtins/Date.json
+++ b/javascript/builtins/Date.json
@@ -53,7 +53,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-date-objects"
         },
         "@@toPrimitive": {
           "__compat": {
@@ -106,7 +107,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype-@@toprimitive"
           }
         },
         "UTC": {
@@ -160,7 +162,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.utc"
           }
         },
         "getDate": {
@@ -214,7 +217,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getdate"
           }
         },
         "getDay": {
@@ -268,7 +272,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getday"
           }
         },
         "getFullYear": {
@@ -322,7 +327,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getfullyear"
           }
         },
         "getHours": {
@@ -376,7 +382,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.gethours"
           }
         },
         "getMilliseconds": {
@@ -430,7 +437,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getmilliseconds"
           }
         },
         "getMinutes": {
@@ -484,7 +492,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getminutes"
           }
         },
         "getMonth": {
@@ -538,7 +547,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getmonth"
           }
         },
         "getSeconds": {
@@ -592,7 +602,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getseconds"
           }
         },
         "getTime": {
@@ -646,7 +657,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.gettime"
           }
         },
         "getTimezoneOffset": {
@@ -700,7 +712,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.gettimezoneoffset"
           }
         },
         "getUTCDate": {
@@ -754,7 +767,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getutcdate"
           }
         },
         "getUTCDay": {
@@ -808,7 +822,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getutcday"
           }
         },
         "getUTCFullYear": {
@@ -862,7 +877,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getutcfullyear"
           }
         },
         "getUTCHours": {
@@ -916,7 +932,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getutchours"
           }
         },
         "getUTCMilliseconds": {
@@ -970,7 +987,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getutcmilliseconds"
           }
         },
         "getUTCMinutes": {
@@ -1024,7 +1042,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getutcminutes"
           }
         },
         "getUTCMonth": {
@@ -1078,7 +1097,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getutcmonth"
           }
         },
         "getUTCSeconds": {
@@ -1132,7 +1152,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.getutcseconds"
           }
         },
         "getYear": {
@@ -1240,7 +1261,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.now"
           }
         },
         "parse": {
@@ -1294,7 +1316,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.parse"
           },
           "iso_8601": {
             "__compat": {
@@ -1402,7 +1425,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-properties-of-the-date-prototype-object"
           },
           "ordinary_object": {
             "__compat": {
@@ -1510,7 +1534,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setdate"
           }
         },
         "setFullYear": {
@@ -1564,7 +1589,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setfullyear"
           }
         },
         "setHours": {
@@ -1618,7 +1644,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.sethours"
           }
         },
         "setMilliseconds": {
@@ -1672,7 +1699,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setmilliseconds"
           }
         },
         "setMinutes": {
@@ -1726,7 +1754,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setminutes"
           }
         },
         "setMonth": {
@@ -1780,7 +1809,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setmonth"
           }
         },
         "setSeconds": {
@@ -1834,7 +1864,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setseconds"
           }
         },
         "setTime": {
@@ -1888,7 +1919,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.settime"
           }
         },
         "setUTCDate": {
@@ -1942,7 +1974,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setutcdate"
           }
         },
         "setUTCFullYear": {
@@ -1996,7 +2029,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setutcfullyear"
           }
         },
         "setUTCHours": {
@@ -2050,7 +2084,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setutchours"
           }
         },
         "setUTCMilliseconds": {
@@ -2104,7 +2139,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setutcmilliseconds"
           }
         },
         "setUTCMinutes": {
@@ -2158,7 +2194,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setutcminutes"
           }
         },
         "setUTCMonth": {
@@ -2212,7 +2249,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setutcmonth"
           }
         },
         "setUTCSeconds": {
@@ -2266,7 +2304,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.setutcseconds"
           }
         },
         "setYear": {
@@ -2374,7 +2413,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.todatestring"
           }
         },
         "toGMTString": {
@@ -2482,7 +2522,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.toisostring"
           }
         },
         "toJSON": {
@@ -2536,7 +2577,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.tojson"
           }
         },
         "toLocaleDateString": {
@@ -2590,7 +2632,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-date.prototype.tolocaledatestring",
+              "https://tc39.github.io/ecma402/#sec-Date.prototype.toLocaleDateString"
+            ]
           },
           "locales": {
             "__compat": {
@@ -2860,7 +2906,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-date.prototype.tolocalestring",
+              "https://tc39.github.io/ecma402/#sec-Date.prototype.toLocaleString"
+            ]
           },
           "locales": {
             "__compat": {
@@ -3074,7 +3124,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-date.prototype.tolocalestring",
+              "https://tc39.github.io/ecma402/#sec-Date.prototype.toLocaleTimeString"
+            ]
           },
           "locales": {
             "__compat": {
@@ -3342,7 +3396,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.tostring"
           }
         },
         "toTimeString": {
@@ -3396,7 +3451,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.totimestring"
           }
         },
         "toUTCString": {
@@ -3450,7 +3506,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.toutcstring"
           }
         },
         "valueOf": {
@@ -3504,7 +3561,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-date.prototype.valueof"
           }
         }
       }
diff --git a/javascript/builtins/Error.json b/javascript/builtins/Error.json
index a7bda7afecbbdb..135b704db45251 100644
--- a/javascript/builtins/Error.json
+++ b/javascript/builtins/Error.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-error-objects"
         },
         "prototype": {
           "__compat": {
@@ -105,7 +106,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-error.prototype"
           }
         },
         "columnNumber": {
@@ -321,7 +323,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-error.prototype.message"
           }
         },
         "name": {
@@ -375,7 +378,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-error.prototype.name"
           }
         },
         "stack": {
@@ -537,7 +541,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-error.prototype.tostring"
           }
         }
       }
diff --git a/javascript/builtins/EvalError.json b/javascript/builtins/EvalError.json
index 2a1dd323539353..4059e246f69063 100644
--- a/javascript/builtins/EvalError.json
+++ b/javascript/builtins/EvalError.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-native-error-types-used-in-this-standard-evalerror"
         }
       }
     }
diff --git a/javascript/builtins/Float32Array.json b/javascript/builtins/Float32Array.json
index da79c6b294025c..325ad49f188701 100644
--- a/javascript/builtins/Float32Array.json
+++ b/javascript/builtins/Float32Array.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#table-49"
         },
         "new_required": {
           "__compat": {
diff --git a/javascript/builtins/Float64Array.json b/javascript/builtins/Float64Array.json
index 6149f02d9ee939..d17b1e234a6d53 100644
--- a/javascript/builtins/Float64Array.json
+++ b/javascript/builtins/Float64Array.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#table-49"
         },
         "new_required": {
           "__compat": {
diff --git a/javascript/builtins/Function.json b/javascript/builtins/Function.json
index c4b9c34fc53222..6de19096d78bbb 100644
--- a/javascript/builtins/Function.json
+++ b/javascript/builtins/Function.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-function-objects"
         },
         "arguments": {
           "__compat": {
@@ -321,7 +322,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-function-instances-length"
           },
           "configurable_true": {
             "__compat": {
@@ -429,7 +431,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-function-instances-name"
           },
           "configurable_true": {
             "__compat": {
@@ -591,7 +594,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-function-instances-prototype"
           }
         },
         "apply": {
@@ -645,7 +649,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-function.prototype.apply"
           },
           "generic_arrays_as_arguments": {
             "__compat": {
@@ -753,7 +758,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-function.prototype.bind"
           }
         },
         "call": {
@@ -807,7 +813,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-function.prototype.call"
           }
         },
         "isGenerator": {
@@ -971,7 +978,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/Function-prototype-toString-revision/#sec-introduction",
+              "https://tc39.github.io/ecma262/#sec-function.prototype.tostring"
+            ]
           },
           "toString_revision": {
             "__compat": {
diff --git a/javascript/builtins/Generator.json b/javascript/builtins/Generator.json
index ffb8ff2937fb19..f942bd7558d09d 100644
--- a/javascript/builtins/Generator.json
+++ b/javascript/builtins/Generator.json
@@ -63,7 +63,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-generator-objects"
         },
         "next": {
           "__compat": {
@@ -116,7 +117,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-generator.prototype.next"
           }
         },
         "return": {
@@ -170,7 +172,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-generator.prototype.return"
           }
         },
         "throw": {
@@ -235,7 +238,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-generator.prototype.throw"
           }
         }
       }
diff --git a/javascript/builtins/GeneratorFunction.json b/javascript/builtins/GeneratorFunction.json
index 75006efb9f0464..d87f328c2446ff 100644
--- a/javascript/builtins/GeneratorFunction.json
+++ b/javascript/builtins/GeneratorFunction.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-generatorfunction-objects"
         },
         "prototype": {
           "__compat": {
@@ -105,7 +106,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-generatorfunction.prototype"
           }
         }
       }
diff --git a/javascript/builtins/Int16Array.json b/javascript/builtins/Int16Array.json
index 66076365b0c466..30736140abe187 100644
--- a/javascript/builtins/Int16Array.json
+++ b/javascript/builtins/Int16Array.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#table-49"
         },
         "new_required": {
           "__compat": {
diff --git a/javascript/builtins/Int32Array.json b/javascript/builtins/Int32Array.json
index 709a9bfb5ce5d5..4367351009665f 100644
--- a/javascript/builtins/Int32Array.json
+++ b/javascript/builtins/Int32Array.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#table-49"
         },
         "new_required": {
           "__compat": {
diff --git a/javascript/builtins/Int8Array.json b/javascript/builtins/Int8Array.json
index 0087cd33c14fa9..ba3c5a2e519f54 100644
--- a/javascript/builtins/Int8Array.json
+++ b/javascript/builtins/Int8Array.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#table-49"
         },
         "new_required": {
           "__compat": {
diff --git a/javascript/builtins/Intl.json b/javascript/builtins/Intl.json
index 474236835b820b..78b88b6257ee57 100644
--- a/javascript/builtins/Intl.json
+++ b/javascript/builtins/Intl.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma402/#intl-object"
         },
         "getCanonicalLocales": {
           "__compat": {
@@ -105,7 +106,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma402/#sec-intl.getcanonicallocales"
           }
         },
         "Collator": {
@@ -159,7 +161,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma402/#collator-objects"
           },
           "caseFirst": {
             "__compat": {
@@ -483,7 +486,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma402/#datetimeformat-objects"
           },
           "iana_time_zone_names": {
             "__compat": {
@@ -980,7 +984,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma402/#numberformat-objects"
           },
           "prototype": {
             "__compat": {
@@ -1318,7 +1323,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma402/#pluralrules-objects"
           },
           "prototype": {
             "__compat": {
diff --git a/javascript/builtins/JSON.json b/javascript/builtins/JSON.json
index 409b041f18d9c2..dd53c662df6ac8 100644
--- a/javascript/builtins/JSON.json
+++ b/javascript/builtins/JSON.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-json-object"
         },
         "parse": {
           "__compat": {
@@ -105,7 +106,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-json.parse"
           }
         },
         "stringify": {
@@ -159,7 +161,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-json.stringify"
           }
         },
         "json_superset": {
@@ -214,7 +217,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-json-object"
           }
         }
       }
diff --git a/javascript/builtins/Map.json b/javascript/builtins/Map.json
index 82c6cd32fd8b40..4dfe59a150cc67 100644
--- a/javascript/builtins/Map.json
+++ b/javascript/builtins/Map.json
@@ -63,7 +63,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-map-objects"
         },
         "map_iterable": {
           "__compat": {
@@ -343,7 +344,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype.clear"
           }
         },
         "delete": {
@@ -408,7 +410,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype.delete"
           }
         },
         "entries": {
@@ -462,7 +465,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype.entries"
           }
         },
         "forEach": {
@@ -516,7 +520,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype.foreach"
           }
         },
         "get": {
@@ -570,7 +575,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype.get"
           }
         },
         "has": {
@@ -624,7 +630,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype.has"
           }
         },
         "keys": {
@@ -678,7 +685,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype.keys"
           }
         },
         "prototype": {
@@ -732,7 +740,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype"
           }
         },
         "set": {
@@ -788,7 +797,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype.set"
           }
         },
         "size": {
@@ -844,7 +854,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-map.prototype.size"
           }
         },
         "values": {
@@ -898,7 +909,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype.values"
           }
         },
         "@@iterator": {
@@ -980,7 +992,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype-@@iterator"
           }
         },
         "@@species": {
@@ -1045,7 +1058,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-map-@@species"
           }
         },
         "@@toStringTag": {
@@ -1099,7 +1113,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-map.prototype-@@tostringtag"
           }
         }
       }
diff --git a/javascript/builtins/Math.json b/javascript/builtins/Math.json
index 7317e6b70b30d3..ebaf3f65d657f8 100644
--- a/javascript/builtins/Math.json
+++ b/javascript/builtins/Math.json
@@ -53,7 +53,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.e"
           }
         },
         "LN2": {
@@ -107,7 +108,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.ln2"
           }
         },
         "LN10": {
@@ -161,7 +163,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.ln10"
           }
         },
         "LOG2E": {
@@ -215,7 +218,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.log2e"
           }
         },
         "LOG10E": {
@@ -269,7 +273,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.log10e"
           }
         },
         "PI": {
@@ -323,7 +328,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.pi"
           }
         },
         "SQRT1_2": {
@@ -377,7 +383,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.sqrt1_2"
           }
         },
         "SQRT2": {
@@ -431,7 +438,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.sqrt2"
           }
         },
         "abs": {
@@ -485,7 +493,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.abs"
           }
         },
         "acos": {
@@ -539,7 +548,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.acos"
           }
         },
         "acosh": {
@@ -593,7 +603,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.acosh"
           }
         },
         "asin": {
@@ -647,7 +658,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.asin"
           }
         },
         "asinh": {
@@ -701,7 +713,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.asinh"
           }
         },
         "atan": {
@@ -755,7 +768,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.atan"
           }
         },
         "atan2": {
@@ -809,7 +823,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.atan2"
           }
         },
         "atanh": {
@@ -863,7 +878,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.atanh"
           }
         },
         "cbrt": {
@@ -917,7 +933,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.cbrt"
           }
         },
         "ceil": {
@@ -971,7 +988,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.ceil"
           }
         },
         "clz32": {
@@ -1025,7 +1043,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.clz32"
           }
         },
         "cos": {
@@ -1079,7 +1098,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.cos"
           }
         },
         "cosh": {
@@ -1133,7 +1153,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.cosh"
           }
         },
         "exp": {
@@ -1187,7 +1208,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.exp"
           }
         },
         "expm1": {
@@ -1241,7 +1263,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.expm1"
           }
         },
         "floor": {
@@ -1295,7 +1318,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.floor"
           }
         },
         "fround": {
@@ -1349,7 +1373,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.fround"
           }
         },
         "hypot": {
@@ -1403,7 +1428,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.hypot"
           }
         },
         "imul": {
@@ -1457,7 +1483,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.imul"
           }
         },
         "log": {
@@ -1511,7 +1538,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.log"
           }
         },
         "log1p": {
@@ -1565,7 +1593,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.log1p"
           }
         },
         "log2": {
@@ -1619,7 +1648,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.log2"
           }
         },
         "log10": {
@@ -1673,7 +1703,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.log10"
           }
         },
         "max": {
@@ -1727,7 +1758,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.max"
           }
         },
         "min": {
@@ -1781,7 +1813,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.min"
           }
         },
         "pow": {
@@ -1835,7 +1868,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.pow"
           }
         },
         "random": {
@@ -1889,7 +1923,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.random"
           }
         },
         "round": {
@@ -1943,7 +1978,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.round"
           }
         },
         "sign": {
@@ -1997,7 +2033,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.sign"
           }
         },
         "sin": {
@@ -2051,7 +2088,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.sin"
           }
         },
         "sinh": {
@@ -2105,7 +2143,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.sinh"
           }
         },
         "sqrt": {
@@ -2159,7 +2198,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.sqrt"
           }
         },
         "tan": {
@@ -2213,7 +2253,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.tan"
           }
         },
         "tanh": {
@@ -2267,7 +2308,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.tanh"
           }
         },
         "trunc": {
@@ -2321,7 +2363,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-math.trunc"
           }
         }
       }
diff --git a/javascript/builtins/Number.json b/javascript/builtins/Number.json
index 6b6f9bbc5fc9f6..7606edd818376d 100644
--- a/javascript/builtins/Number.json
+++ b/javascript/builtins/Number.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-number-objects"
         },
         "EPSILON": {
           "__compat": {
@@ -105,7 +106,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.epsilon"
           }
         },
         "MAX_SAFE_INTEGER": {
@@ -159,7 +161,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.max_safe_integer"
           }
         },
         "MAX_VALUE": {
@@ -213,7 +216,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.max_value"
           }
         },
         "MIN_SAFE_INTEGER": {
@@ -267,7 +271,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.min_safe_integer"
           }
         },
         "MIN_VALUE": {
@@ -321,7 +326,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.min_value"
           }
         },
         "NEGATIVE_INFINITY": {
@@ -375,7 +381,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.negative_infinity"
           }
         },
         "NaN": {
@@ -429,7 +436,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.nan"
           }
         },
         "POSITIVE_INFINITY": {
@@ -483,7 +491,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.positive_infinity"
           }
         },
         "isFinite": {
@@ -537,7 +546,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.isfinite"
           }
         },
         "isInteger": {
@@ -591,7 +601,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.isinteger"
           }
         },
         "isNaN": {
@@ -645,7 +656,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.isnan"
           }
         },
         "isSafeInteger": {
@@ -699,7 +711,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.issafeinteger"
           }
         },
         "parseFloat": {
@@ -753,7 +766,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.parsefloat"
           }
         },
         "parseInt": {
@@ -807,7 +821,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.parseint"
           }
         },
         "prototype": {
@@ -861,7 +876,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-properties-of-the-number-prototype-object"
           }
         },
         "toExponential": {
@@ -915,7 +931,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.prototype.toexponential"
           }
         },
         "toFixed": {
@@ -969,7 +986,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.prototype.tofixed"
           }
         },
         "toInteger": {
@@ -1079,7 +1097,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-number.prototype.tolocalestring",
+              "https://tc39.github.io/ecma402/#sec-Number.prototype.toLocaleString"
+            ]
           },
           "locales": {
             "__compat": {
@@ -1239,7 +1261,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.prototype.toprecision"
           }
         },
         "toSource": {
@@ -1347,7 +1370,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.prototype.tostring"
           }
         },
         "valueOf": {
@@ -1401,7 +1425,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-number.prototype.valueof"
           }
         }
       }
diff --git a/javascript/builtins/Object.json b/javascript/builtins/Object.json
index 53edeb23ebf423..03a78fd0b05899 100644
--- a/javascript/builtins/Object.json
+++ b/javascript/builtins/Object.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-object-objects"
         },
         "prototype": {
           "__compat": {
@@ -105,7 +106,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype"
           }
         },
         "count": {
@@ -381,7 +383,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.constructor"
           }
         },
         "assign": {
@@ -435,7 +438,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.assign"
           }
         },
         "create": {
@@ -489,7 +493,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.create"
           }
         },
         "defineProperties": {
@@ -543,7 +548,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.defineproperties"
           }
         },
         "defineProperty": {
@@ -599,7 +605,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.defineproperty"
           }
         },
         "entries": {
@@ -664,7 +671,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.entries"
           }
         },
         "freeze": {
@@ -718,7 +726,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.freeze"
           }
         },
         "fromEntries": {
@@ -772,7 +781,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/proposal-object-from-entries/#sec-object.fromentries"
           }
         },
         "getNotifier": {
@@ -881,7 +891,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor"
           }
         },
         "getOwnPropertyDescriptors": {
@@ -946,7 +957,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptors"
           }
         },
         "getOwnPropertyNames": {
@@ -1000,7 +1012,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.getownpropertynames"
           }
         },
         "getOwnPropertySymbols": {
@@ -1054,7 +1067,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.getownpropertysymbols"
           }
         },
         "getPrototypeOf": {
@@ -1108,7 +1122,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.getprototypeof"
           }
         },
         "is": {
@@ -1162,7 +1177,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.is"
           }
         },
         "isExtensible": {
@@ -1216,7 +1232,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.isextensible"
           }
         },
         "isFrozen": {
@@ -1270,7 +1287,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.isfrozen"
           }
         },
         "isSealed": {
@@ -1324,7 +1342,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.issealed"
           }
         },
         "keys": {
@@ -1378,7 +1397,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.keys"
           }
         },
         "observe": {
@@ -1487,7 +1507,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.preventextensions"
           },
           "ES2015_behavior": {
             "__compat": {
@@ -1871,7 +1892,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.hasownproperty"
           }
         },
         "isPrototypeOf": {
@@ -1925,7 +1947,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.isprototypeof"
           }
         },
         "propertyIsEnumerable": {
@@ -1979,7 +2002,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.propertyisenumerable"
           }
         },
         "toLocaleString": {
@@ -2033,7 +2057,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.tolocalestring"
           }
         },
         "toSource": {
@@ -2141,7 +2166,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.tostring"
           }
         },
         "unwatch": {
@@ -2251,7 +2277,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.prototype.valueof"
           }
         },
         "watch": {
@@ -2361,7 +2388,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.seal"
           }
         },
         "setPrototypeOf": {
@@ -2415,7 +2443,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.setprototypeof"
           }
         },
         "unobserve": {
@@ -2535,7 +2564,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-object.values"
           }
         }
       }
diff --git a/javascript/builtins/Promise.json b/javascript/builtins/Promise.json
index d1a0004711e6ce..1d5c9f9dc3467e 100644
--- a/javascript/builtins/Promise.json
+++ b/javascript/builtins/Promise.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-promise-objects"
         },
         "Promise": {
           "__compat": {
@@ -111,7 +112,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-promise-objects"
           }
         },
         "all": {
@@ -165,7 +167,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-promise.all"
           }
         },
         "prototype": {
@@ -219,7 +222,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-promise.prototype"
           }
         },
         "catch": {
@@ -273,7 +277,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-promise.prototype.catch"
           }
         },
         "finally": {
@@ -327,7 +332,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-promise.prototype.finally"
           }
         },
         "then": {
@@ -381,7 +387,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-promise.prototype.then"
           }
         },
         "race": {
@@ -435,7 +442,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-promise.race"
           }
         },
         "reject": {
@@ -489,7 +497,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-promise.reject"
           }
         },
         "resolve": {
@@ -543,7 +552,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-promise.resolve"
           }
         }
       }
diff --git a/javascript/builtins/Proxy.json b/javascript/builtins/Proxy.json
index 03d10434627c62..28743fa664f44e 100644
--- a/javascript/builtins/Proxy.json
+++ b/javascript/builtins/Proxy.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-proxy-objects"
         },
         "revocable": {
           "__compat": {
@@ -105,7 +106,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-proxy.revocable"
           }
         },
         "handler": {
diff --git a/javascript/builtins/RangeError.json b/javascript/builtins/RangeError.json
index b0f56842717fa1..524b7dc1a4fdd3 100644
--- a/javascript/builtins/RangeError.json
+++ b/javascript/builtins/RangeError.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-native-error-types-used-in-this-standard-rangeerror"
         }
       }
     }
diff --git a/javascript/builtins/ReferenceError.json b/javascript/builtins/ReferenceError.json
index cacbda57706f6e..e273af4cd5d0ec 100644
--- a/javascript/builtins/ReferenceError.json
+++ b/javascript/builtins/ReferenceError.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-native-error-types-used-in-this-standard-referenceerror"
         }
       }
     }
diff --git a/javascript/builtins/Reflect.json b/javascript/builtins/Reflect.json
index 55e188477eb71e..a41a8209a35dc7 100644
--- a/javascript/builtins/Reflect.json
+++ b/javascript/builtins/Reflect.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-reflect-object"
         },
         "apply": {
           "__compat": {
@@ -105,7 +106,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.apply"
           }
         },
         "construct": {
@@ -159,7 +161,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.construct"
           }
         },
         "defineProperty": {
@@ -213,7 +216,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.defineproperty"
           }
         },
         "deleteProperty": {
@@ -267,7 +271,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.deleteproperty"
           }
         },
         "enumerate": {
@@ -376,7 +381,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.get"
           }
         },
         "getOwnPropertyDescriptor": {
@@ -430,7 +436,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.getownpropertydescriptor"
           }
         },
         "getPrototypeOf": {
@@ -484,7 +491,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.getprototypeof"
           }
         },
         "has": {
@@ -538,7 +546,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.has"
           }
         },
         "isExtensible": {
@@ -592,7 +601,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.isextensible"
           }
         },
         "ownKeys": {
@@ -646,7 +656,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.ownkeys"
           }
         },
         "preventExtensions": {
@@ -700,7 +711,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.preventextensions"
           }
         },
         "set": {
@@ -754,7 +766,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.set"
           }
         },
         "setPrototypeOf": {
@@ -808,7 +821,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-reflect.setprototypeof"
           }
         }
       }
diff --git a/javascript/builtins/RegExp.json b/javascript/builtins/RegExp.json
index af1b29d76457a9..823eb919b35246 100644
--- a/javascript/builtins/RegExp.json
+++ b/javascript/builtins/RegExp.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-regexp-regular-expression-objects"
         },
         "compile": {
           "__compat": {
@@ -159,7 +160,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-regexp.prototype.exec"
           }
         },
         "flags": {
@@ -213,7 +215,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-regexp.prototype.flags"
           }
         },
         "global": {
@@ -267,7 +270,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-regexp.prototype.global"
           },
           "prototype_accessor": {
             "__compat": {
@@ -375,7 +379,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-regexp.prototype.ignorecase"
           },
           "prototype_accessor": {
             "__compat": {
@@ -538,7 +543,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-properties-of-regexp-instances"
           }
         },
         "lastMatch": {
@@ -811,7 +817,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-regexp.prototype.multiline"
           },
           "prototype_accessor": {
             "__compat": {
@@ -974,7 +981,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-regexp.prototype"
           }
         },
         "rightContext": {
@@ -1083,7 +1091,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-regexp.prototype.source"
           },
           "prototype_accessor": {
             "__compat": {
@@ -1299,7 +1308,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-regexp.prototype.sticky"
           },
           "prototype_accessor": {
             "__compat": {
@@ -1461,7 +1471,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-regexp.prototype.test"
           }
         },
         "toSource": {
@@ -1569,7 +1580,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-regexp.prototype.tostring"
           },
           "escaping": {
             "__compat": {
@@ -1732,7 +1744,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-regexp.prototype.unicode"
           }
         },
         "@@match": {
@@ -1786,7 +1799,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-regexp.prototype-@@match"
           }
         },
         "@@replace": {
@@ -1840,7 +1854,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-regexp.prototype-@@replace"
           }
         },
         "@@search": {
@@ -1894,7 +1909,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-regexp.prototype-@@search"
           }
         },
         "@@species": {
@@ -1959,7 +1975,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-regexp-@@species"
           }
         },
         "@@split": {
@@ -2013,7 +2030,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-regexp.prototype-@@split"
           }
         }
       }
diff --git a/javascript/builtins/Set.json b/javascript/builtins/Set.json
index 454298f1e32c60..74f1f73a1e9a48 100644
--- a/javascript/builtins/Set.json
+++ b/javascript/builtins/Set.json
@@ -63,7 +63,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-set-objects"
         },
         "set_iterable": {
           "__compat": {
@@ -345,7 +346,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-set.prototype.add"
           }
         },
         "clear": {
@@ -399,7 +401,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-set.prototype.clear"
           }
         },
         "delete": {
@@ -464,7 +467,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-set.prototype.delete"
           }
         },
         "entries": {
@@ -518,7 +522,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-set.prototype.entries"
           }
         },
         "forEach": {
@@ -572,7 +577,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-set.prototype.foreach"
           }
         },
         "has": {
@@ -626,7 +632,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-set.prototype.has"
           }
         },
         "prototype": {
@@ -680,7 +687,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-set.prototype"
           }
         },
         "size": {
@@ -736,7 +744,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-set.prototype.size"
           }
         },
         "values": {
@@ -790,7 +799,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-set.prototype.values"
           }
         },
         "@@iterator": {
@@ -872,7 +882,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-set.prototype-@@iterator"
           }
         },
         "@@species": {
@@ -937,7 +948,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-set-@@species"
           }
         }
       }
diff --git a/javascript/builtins/SharedArrayBuffer.json b/javascript/builtins/SharedArrayBuffer.json
index ab99b2622c2566..53cfbeb6d0c5a8 100644
--- a/javascript/builtins/SharedArrayBuffer.json
+++ b/javascript/builtins/SharedArrayBuffer.json
@@ -115,7 +115,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-sharedarraybuffer-objects"
         },
         "sab_in_dataview": {
           "__compat": {
@@ -348,7 +349,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-sharedarraybuffer.prototype"
           }
         },
         "byteLength": {
@@ -465,7 +467,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-sharedarraybuffer.prototype.bytelength"
           }
         },
         "slice": {
@@ -582,7 +585,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-sharedarraybuffer.prototype.slice"
           }
         }
       }
diff --git a/javascript/builtins/String.json b/javascript/builtins/String.json
index 165f6bbf9c25b4..a4e42eebf980e3 100644
--- a/javascript/builtins/String.json
+++ b/javascript/builtins/String.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-string-objects"
         },
         "@@iterator": {
           "__compat": {
@@ -133,7 +134,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype-@@iterator"
           }
         },
         "unicode_code_point_escapes": {
@@ -458,7 +460,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.charat"
           }
         },
         "charCodeAt": {
@@ -512,7 +515,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.charcodeat"
           }
         },
         "codePointAt": {
@@ -577,7 +581,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.codepointat"
           }
         },
         "concat": {
@@ -631,7 +636,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.concat"
           }
         },
         "endsWith": {
@@ -696,7 +702,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.endswith"
           }
         },
         "fixed": {
@@ -912,7 +919,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.fromcharcodes"
           }
         },
         "fromCodePoint": {
@@ -977,7 +985,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.fromcodepoint"
           }
         },
         "includes": {
@@ -1045,7 +1054,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.includes"
           }
         },
         "indexOf": {
@@ -1099,7 +1109,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.indexof"
           }
         },
         "italics": {
@@ -1207,7 +1218,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.lastindexof"
           }
         },
         "length": {
@@ -1261,7 +1273,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-properties-of-string-instances-length"
           }
         },
         "link": {
@@ -1369,7 +1382,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-string.prototype.localecompare",
+              "https://tc39.github.io/ecma402/#sec-String.prototype.localeCompare"
+            ]
           },
           "locales": {
             "__compat": {
@@ -1529,7 +1546,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.match"
           },
           "flags": {
             "__compat": {
@@ -1638,7 +1656,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.normalize"
           }
         },
         "padEnd": {
@@ -1703,7 +1722,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.padend"
           }
         },
         "padStart": {
@@ -1768,7 +1788,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.padstart"
           }
         },
         "prototype": {
@@ -1822,7 +1843,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype"
           }
         },
         "quote": {
@@ -1932,7 +1954,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.raw"
           }
         },
         "repeat": {
@@ -1997,7 +2020,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.repeat"
           }
         },
         "replace": {
@@ -2051,7 +2075,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.replace"
           },
           "flags": {
             "__compat": {
@@ -2160,7 +2185,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.search"
           },
           "flags": {
             "__compat": {
@@ -2269,7 +2295,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.slice"
           }
         },
         "small": {
@@ -2377,7 +2404,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.split"
           }
         },
         "startsWith": {
@@ -2442,7 +2470,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.startswith"
           }
         },
         "strike": {
@@ -2658,7 +2687,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.substring"
           }
         },
         "sup": {
@@ -2766,7 +2796,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-string.prototype.tolocalelowercase",
+              "https://tc39.github.io/ecma402/#sup-string.prototype.tolocalelowercase"
+            ]
           },
           "locale": {
             "__compat": {
@@ -2873,7 +2907,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-string.prototype.tolocaleuppercase",
+              "https://tc39.github.io/ecma402/#sup-string.prototype.tolocaleuppercase"
+            ]
           },
           "locale": {
             "__compat": {
@@ -2980,7 +3018,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.tolowercase"
           }
         },
         "toSource": {
@@ -3088,7 +3127,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.tostring"
           }
         },
         "toUpperCase": {
@@ -3142,7 +3182,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.touppercase"
           }
         },
         "trim": {
@@ -3196,7 +3237,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.trim"
           }
         },
         "trimEnd": {
@@ -3280,7 +3322,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://github.com/tc39/proposal-string-left-right-trim/#stringprototypetrimstart--stringprototypetrimend"
           }
         },
         "trimStart": {
@@ -3364,7 +3407,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://github.com/tc39/proposal-string-left-right-trim/#stringprototypetrimstart--stringprototypetrimend"
           }
         },
         "valueOf": {
@@ -3418,7 +3462,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-string.prototype.valueof"
           }
         }
       }
diff --git a/javascript/builtins/Symbol.json b/javascript/builtins/Symbol.json
index e93b1efd83b126..890be8013f20ef 100644
--- a/javascript/builtins/Symbol.json
+++ b/javascript/builtins/Symbol.json
@@ -53,7 +53,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-symbol-objects"
         },
         "asyncIterator": {
           "__compat": {
@@ -160,7 +161,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/proposal-Symbol-description/#sec-symbol.prototype.description"
           }
         },
         "for": {
@@ -214,7 +216,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.for"
           }
         },
         "hasInstance": {
@@ -279,7 +282,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.hasinstance"
           }
         },
         "isConcatSpreadable": {
@@ -333,7 +337,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.isconcatspreadable"
           }
         },
         "iterator": {
@@ -387,7 +392,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.iterator"
           }
         },
         "keyFor": {
@@ -441,7 +447,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.keyfor"
           }
         },
         "match": {
@@ -495,7 +502,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.match"
           }
         },
         "prototype": {
@@ -549,7 +557,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.prototype"
           }
         },
         "replace": {
@@ -603,7 +612,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.replace"
           }
         },
         "search": {
@@ -657,7 +667,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.search"
           }
         },
         "species": {
@@ -722,7 +733,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.species"
           }
         },
         "split": {
@@ -776,7 +788,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.split"
           }
         },
         "toPrimitive": {
@@ -830,7 +843,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.toprimitive"
           }
         },
         "toSource": {
@@ -938,7 +952,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.prototype.tostring"
           }
         },
         "toStringTag": {
@@ -1003,7 +1018,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.tostringtag"
           }
         },
         "unscopables": {
@@ -1057,7 +1073,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.unscopables"
           }
         },
         "valueOf": {
@@ -1111,7 +1128,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.prototype.valueof"
           }
         },
         "@@toPrimitive": {
@@ -1165,7 +1183,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-symbol.prototype-@@toprimitive"
           }
         }
       }
diff --git a/javascript/builtins/SyntaxError.json b/javascript/builtins/SyntaxError.json
index 0d719eccdee7fc..a0f97436dc0c1e 100644
--- a/javascript/builtins/SyntaxError.json
+++ b/javascript/builtins/SyntaxError.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-native-error-types-used-in-this-standard-syntaxerror"
         }
       }
     }
diff --git a/javascript/builtins/TypeError.json b/javascript/builtins/TypeError.json
index fbc0952702833a..cf8964d7564b1b 100644
--- a/javascript/builtins/TypeError.json
+++ b/javascript/builtins/TypeError.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-native-error-types-used-in-this-standard-typeerror"
         }
       }
     }
diff --git a/javascript/builtins/TypedArray.json b/javascript/builtins/TypedArray.json
index b232833485a715..2f918e3096daaf 100644
--- a/javascript/builtins/TypedArray.json
+++ b/javascript/builtins/TypedArray.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-typedarray-objects"
         },
         "constructor_without_arguments": {
           "__compat": {
@@ -380,7 +381,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-typedarray.bytes_per_element"
           }
         },
         "buffer": {
@@ -434,7 +436,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-%typedarray%.prototype.buffer"
           }
         },
         "byteLength": {
@@ -488,7 +491,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-%typedarray%.prototype.bytelength"
           }
         },
         "byteOffset": {
@@ -542,7 +546,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-%typedarray%.prototype.byteoffset"
           }
         },
         "copyWithin": {
@@ -596,7 +601,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.copywithin"
           }
         },
         "entries": {
@@ -650,7 +656,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.entries"
           }
         },
         "every": {
@@ -704,7 +711,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.every"
           }
         },
         "fill": {
@@ -758,7 +766,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.fill"
           }
         },
         "filter": {
@@ -812,7 +821,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.filter"
           }
         },
         "find": {
@@ -866,7 +876,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.find"
           }
         },
         "findIndex": {
@@ -920,7 +931,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.findindex"
           }
         },
         "forEach": {
@@ -974,7 +986,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.foreach"
           }
         },
         "from": {
@@ -1028,7 +1041,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.from"
           }
         },
         "includes": {
@@ -1093,7 +1107,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.includes"
           }
         },
         "indexOf": {
@@ -1149,7 +1164,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.indexof"
           }
         },
         "join": {
@@ -1203,7 +1219,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.join"
           }
         },
         "keys": {
@@ -1257,7 +1274,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.keys"
           }
         },
         "lastIndexOf": {
@@ -1313,7 +1331,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.lastindexof"
           }
         },
         "length": {
@@ -1367,7 +1386,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-%typedarray%.prototype.length"
           }
         },
         "map": {
@@ -1421,7 +1441,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.map"
           }
         },
         "move": {
@@ -1533,7 +1554,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-properties-of-the-typedarray-constructors"
           }
         },
         "of": {
@@ -1587,7 +1609,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.of"
           }
         },
         "prototype": {
@@ -1641,7 +1664,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-properties-of-the-%typedarrayprototype%-object"
           }
         },
         "reduce": {
@@ -1695,7 +1719,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.reduce"
           }
         },
         "reduceRight": {
@@ -1749,7 +1774,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.reduceRight"
           }
         },
         "reverse": {
@@ -1803,7 +1829,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.reverse"
           }
         },
         "set": {
@@ -1857,7 +1884,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.set-array-offset"
           }
         },
         "slice": {
@@ -1911,7 +1939,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.slice"
           }
         },
         "some": {
@@ -1965,7 +1994,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.some"
           }
         },
         "sort": {
@@ -2019,7 +2049,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.sort"
           }
         },
         "subarray": {
@@ -2073,7 +2104,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.subarray"
           }
         },
         "toLocaleString": {
@@ -2127,7 +2159,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.tolocalestring"
           }
         },
         "toString": {
@@ -2181,7 +2214,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.tostring"
           }
         },
         "values": {
@@ -2235,7 +2269,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.values"
           }
         },
         "@@iterator": {
@@ -2317,7 +2352,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-%typedarray%.prototype-@@iterator"
           }
         },
         "@@species": {
@@ -2382,7 +2418,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-get-%typedarray%-@@species"
           }
         }
       }
diff --git a/javascript/builtins/URIError.json b/javascript/builtins/URIError.json
index 4721f2929778bc..bd328231e03a3d 100644
--- a/javascript/builtins/URIError.json
+++ b/javascript/builtins/URIError.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-native-error-types-used-in-this-standard-urierror"
         }
       }
     }
diff --git a/javascript/builtins/Uint16Array.json b/javascript/builtins/Uint16Array.json
index 526bec9f27cc57..b289fee7c5b3b6 100644
--- a/javascript/builtins/Uint16Array.json
+++ b/javascript/builtins/Uint16Array.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#table-49"
         },
         "new_required": {
           "__compat": {
diff --git a/javascript/builtins/Uint32Array.json b/javascript/builtins/Uint32Array.json
index 087a35463dbfa2..205131e3db7d0b 100644
--- a/javascript/builtins/Uint32Array.json
+++ b/javascript/builtins/Uint32Array.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#table-49"
         },
         "new_required": {
           "__compat": {
diff --git a/javascript/builtins/Uint8Array.json b/javascript/builtins/Uint8Array.json
index bb37b9da2f38cf..e7502e17b36547 100644
--- a/javascript/builtins/Uint8Array.json
+++ b/javascript/builtins/Uint8Array.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#table-49"
         },
         "new_required": {
           "__compat": {
diff --git a/javascript/builtins/Uint8ClampedArray.json b/javascript/builtins/Uint8ClampedArray.json
index bbfc6ef7f96ac1..bec61d0caa01ec 100644
--- a/javascript/builtins/Uint8ClampedArray.json
+++ b/javascript/builtins/Uint8ClampedArray.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#table-49"
         },
         "new_required": {
           "__compat": {
diff --git a/javascript/builtins/WeakMap.json b/javascript/builtins/WeakMap.json
index 7f58416e06f401..193c9f2888ce6d 100644
--- a/javascript/builtins/WeakMap.json
+++ b/javascript/builtins/WeakMap.json
@@ -63,7 +63,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-weakmap-objects"
         },
         "weakmap_iterable": {
           "__compat": {
@@ -365,7 +366,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-weakmap.prototype.delete"
           }
         },
         "get": {
@@ -432,7 +434,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-weakmap.prototype.get"
           }
         },
         "has": {
@@ -499,7 +502,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-weakmap.prototype.has"
           }
         },
         "prototype": {
@@ -564,7 +568,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-weakmap.prototype"
           }
         },
         "set": {
@@ -633,7 +638,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-weakmap.prototype.set"
           }
         }
       }
diff --git a/javascript/builtins/WeakSet.json b/javascript/builtins/WeakSet.json
index 06516de25a4f85..67b26d05a5a4d7 100644
--- a/javascript/builtins/WeakSet.json
+++ b/javascript/builtins/WeakSet.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-weakset-objects"
         },
         "weakset_iterable": {
           "__compat": {
@@ -213,7 +214,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-weakset.prototype.add"
           }
         },
         "clear": {
@@ -328,7 +330,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-weakset.prototype.delete"
           }
         },
         "has": {
@@ -382,7 +385,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-weakset.prototype.has"
           }
         },
         "prototype": {
@@ -436,7 +440,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-weakset.prototype"
           }
         }
       }
diff --git a/javascript/builtins/WebAssembly.json b/javascript/builtins/WebAssembly.json
index 73656b42f9f512..d2ef45064bf75e 100644
--- a/javascript/builtins/WebAssembly.json
+++ b/javascript/builtins/WebAssembly.json
@@ -60,7 +60,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://webassembly.github.io/spec/js-api/#the-webassembly-object"
         },
         "CompileError": {
           "__compat": {
@@ -121,7 +122,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://webassembly.github.io/spec/js-api/#constructor-properties-of-the-webassembly-object",
+              "https://tc39.github.io/ecma262/#sec-native-error-types-used-in-this-standard"
+            ]
           }
         },
         "Global": {
@@ -175,7 +180,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://webassembly.github.io/spec/js-api/#globals"
           },
           "value": {
             "__compat": {
@@ -345,7 +351,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://webassembly.github.io/spec/js-api/#webassemblyinstance-objects"
           },
           "exports": {
             "__compat": {
@@ -531,7 +538,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://webassembly.github.io/spec/js-api/#constructor-properties-of-the-webassembly-object",
+              "https://tc39.github.io/ecma262/#sec-native-error-types-used-in-this-standard"
+            ]
           }
         },
         "Memory": {
@@ -593,7 +604,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://webassembly.github.io/spec/js-api/#webassemblymemory-objects"
           },
           "buffer": {
             "__compat": {
@@ -841,7 +853,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://webassembly.github.io/spec/js-api/#webassemblymodule-objects"
           },
           "customSections": {
             "__compat": {
@@ -1151,7 +1164,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://webassembly.github.io/spec/js-api/#constructor-properties-of-the-webassembly-object",
+              "https://tc39.github.io/ecma262/#sec-native-error-types-used-in-this-standard"
+            ]
           }
         },
         "Table": {
@@ -1213,7 +1230,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://webassembly.github.io/spec/js-api/#webassemblytable-objects"
           },
           "get": {
             "__compat": {
@@ -1585,7 +1603,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://webassembly.github.io/spec/js-api/#webassemblycompile"
           }
         },
         "compileStreaming": {
@@ -1639,7 +1658,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://github.com/WebAssembly/design/blob/master/Web.md#webassemblycompilestreaming"
           }
         },
         "instantiate": {
@@ -1701,7 +1721,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://webassembly.github.io/spec/js-api/#webassemblyinstantiate"
           }
         },
         "instantiateStreaming": {
@@ -1755,7 +1776,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://github.com/WebAssembly/design/blob/master/Web.md#webassemblyinstantiatestreaming"
           }
         },
         "validate": {
@@ -1817,7 +1839,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://webassembly.github.io/spec/js-api/#webassemblyvalidate"
           }
         }
       }
diff --git a/javascript/builtins/globals.json b/javascript/builtins/globals.json
index fcbbf7ad7db880..19907c7192dbb0 100644
--- a/javascript/builtins/globals.json
+++ b/javascript/builtins/globals.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-value-properties-of-the-global-object-infinity"
         }
       },
       "NaN": {
@@ -106,7 +107,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-value-properties-of-the-global-object-nan"
         }
       },
       "decodeURI": {
@@ -160,7 +162,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-decodeuri-encodeduri"
         }
       },
       "decodeURIComponent": {
@@ -214,7 +217,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-decodeuricomponent-encodeduricomponent"
         }
       },
       "encodeURI": {
@@ -268,7 +272,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-encodeuri-uri"
         }
       },
       "encodeURIComponent": {
@@ -322,7 +327,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-encodeuricomponent-uricomponent"
         }
       },
       "escape": {
@@ -430,7 +436,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-eval-x"
         }
       },
       "isFinite": {
@@ -484,7 +491,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-isfinite-number"
         }
       },
       "isNaN": {
@@ -538,7 +546,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-isnan-number"
         }
       },
       "null": {
@@ -592,7 +601,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-null-value"
         }
       },
       "parseFloat": {
@@ -646,7 +656,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-parsefloat-string"
         }
       },
       "parseInt": {
@@ -700,7 +711,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-parseint-string-radix"
         },
         "leading_zero_strings_as_decimal": {
           "__compat": {
@@ -808,7 +820,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-undefined"
         }
       },
       "unescape": {
diff --git a/javascript/classes.json b/javascript/classes.json
index 51875a891cdddb..57b7c150431b8e 100644
--- a/javascript/classes.json
+++ b/javascript/classes.json
@@ -72,7 +72,8 @@
           "experimental": false,
           "standard_track": true,
           "deprecated": false
-        }
+        },
+        "spec_url": "https://tc39.github.io/ecma262/#sec-class-definitions"
       },
       "constructor": {
         "__compat": {
@@ -146,7 +147,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-static-semantics-constructormethod"
         }
       },
       "extends": {
@@ -221,7 +223,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-class-definitions"
         }
       },
       "static": {
@@ -296,7 +299,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-class-definitions"
         }
       }
     }
diff --git a/javascript/functions.json b/javascript/functions.json
index 12075c131b6ec6..03672154940acb 100644
--- a/javascript/functions.json
+++ b/javascript/functions.json
@@ -51,7 +51,8 @@
           "experimental": false,
           "standard_track": true,
           "deprecated": false
-        }
+        },
+        "spec_url": "https://tc39.github.io/ecma262/#sec-function-definitions"
       },
       "arguments": {
         "__compat": {
@@ -104,7 +105,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-arguments-exotic-objects"
         },
         "callee": {
           "__compat": {
@@ -157,7 +159,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-arguments-exotic-objects"
           }
         },
         "caller": {
@@ -266,7 +269,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-arguments-exotic-objects"
           }
         },
         "@@iterator": {
@@ -320,7 +324,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-createunmappedargumentsobject",
+              "https://tc39.github.io/ecma262/#sec-createmappedargumentsobject"
+            ]
           }
         }
       },
@@ -384,7 +392,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-arrow-function-definitions"
         },
         "trailing_comma": {
           "__compat": {
@@ -547,7 +556,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-function-definitions"
         },
         "parameters_without_defaults_after_default_parameters": {
           "__compat": {
@@ -710,7 +720,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-method-definitions"
         },
         "generator_methods_not_constructable": {
           "__compat": {
@@ -960,7 +971,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-function-definitions"
         },
         "destructuring": {
           "__compat": {
@@ -1068,7 +1080,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-method-definitions"
         },
         "computed_property_names": {
           "__compat": {
@@ -1176,7 +1189,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-method-definitions"
         },
         "computed_property_names": {
           "__compat": {
diff --git a/javascript/grammar.json b/javascript/grammar.json
index 972905e051759c..a41d3fba8285f7 100644
--- a/javascript/grammar.json
+++ b/javascript/grammar.json
@@ -53,7 +53,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "binary_numeric_literals": {
@@ -119,7 +120,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "boolean_literals": {
@@ -174,7 +176,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "decimal_numeric_literals": {
@@ -229,7 +232,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "hexadecimal_escape_sequences": {
@@ -284,7 +288,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "hexadecimal_numeric_literals": {
@@ -339,7 +344,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "null_literal": {
@@ -394,7 +400,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "octal_numeric_literals": {
@@ -449,7 +456,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "regular_expression_literals": {
@@ -504,7 +512,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "string_literals": {
@@ -559,7 +568,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "unicode_escape_sequences": {
@@ -614,7 +624,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "unicode_point_escapes": {
@@ -669,7 +680,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-ecmascript-language-lexical-grammar"
         }
       },
       "shorthand_object_literals": {
@@ -778,7 +790,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-template-literals"
         },
         "template_literal_revision": {
           "__compat": {
diff --git a/javascript/operators/arithmetic.json b/javascript/operators/arithmetic.json
index 9319171b63e330..206d728d93a81b 100644
--- a/javascript/operators/arithmetic.json
+++ b/javascript/operators/arithmetic.json
@@ -54,7 +54,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-additive-operators"
           }
         },
         "decrement": {
@@ -109,7 +110,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-additive-operators"
           }
         },
         "division": {
@@ -164,7 +166,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-additive-operators"
           }
         },
         "exponentiation": {
@@ -230,7 +233,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-additive-operators"
           }
         },
         "increment": {
@@ -285,7 +289,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-additive-operators"
           }
         },
         "multiplication": {
@@ -340,7 +345,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-additive-operators"
           }
         },
         "remainder": {
@@ -395,7 +401,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-additive-operators"
           }
         },
         "subtraction": {
@@ -450,7 +457,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-additive-operators"
           }
         },
         "unary_negation": {
@@ -505,7 +513,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-additive-operators"
           }
         },
         "unary_plus": {
@@ -560,7 +569,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-additive-operators"
           }
         }
       }
diff --git a/javascript/operators/assignment.json b/javascript/operators/assignment.json
index 6bf6aee9878340..c842dc8b78e2bf 100644
--- a/javascript/operators/assignment.json
+++ b/javascript/operators/assignment.json
@@ -54,7 +54,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "bitwise_and": {
@@ -109,7 +110,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "bitwise_or": {
@@ -164,7 +166,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "bitwise_xor": {
@@ -219,7 +222,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "division": {
@@ -274,7 +278,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "exponentiation": {
@@ -340,7 +345,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "left_shift": {
@@ -395,7 +401,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "multiplication": {
@@ -450,7 +457,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "remainder": {
@@ -505,7 +513,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "right_shift": {
@@ -560,7 +569,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "simple": {
@@ -615,7 +625,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "subtraction": {
@@ -670,7 +681,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         },
         "unsigned_right_shift": {
@@ -725,7 +737,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-assignment-operators"
           }
         }
       }
diff --git a/javascript/operators/async_function_expression.json b/javascript/operators/async_function_expression.json
index 60b927faeefb1c..01b724873b08ac 100644
--- a/javascript/operators/async_function_expression.json
+++ b/javascript/operators/async_function_expression.json
@@ -64,7 +64,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-async-function-definitions"
         }
       }
     }
diff --git a/javascript/operators/await.json b/javascript/operators/await.json
index acd033483d8451..afa2fd6380d459 100644
--- a/javascript/operators/await.json
+++ b/javascript/operators/await.json
@@ -63,7 +63,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-async-function-definitions"
         }
       }
     }
diff --git a/javascript/operators/bitwise.json b/javascript/operators/bitwise.json
index 9647ce5927186f..0ba588a0c0d0d5 100644
--- a/javascript/operators/bitwise.json
+++ b/javascript/operators/bitwise.json
@@ -54,7 +54,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-bitwise-shift-operators"
           }
         },
         "left_shift": {
@@ -109,7 +110,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-bitwise-shift-operators"
           }
         },
         "not": {
@@ -164,7 +166,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-bitwise-shift-operators"
           }
         },
         "or": {
@@ -219,7 +222,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-bitwise-shift-operators"
           }
         },
         "right_shift": {
@@ -274,7 +278,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-bitwise-shift-operators"
           }
         },
         "unsigned_right_shift": {
@@ -329,7 +334,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-bitwise-shift-operators"
           }
         },
         "xor": {
@@ -384,7 +390,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-bitwise-shift-operators"
           }
         }
       }
diff --git a/javascript/operators/class.json b/javascript/operators/class.json
index 6c2f7fceb119bb..28a9fac3e9fd36 100644
--- a/javascript/operators/class.json
+++ b/javascript/operators/class.json
@@ -63,7 +63,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-class-definitions"
         }
       }
     }
diff --git a/javascript/operators/comma.json b/javascript/operators/comma.json
index 80d370e4528aa1..1dd1594cbd3ea6 100644
--- a/javascript/operators/comma.json
+++ b/javascript/operators/comma.json
@@ -53,7 +53,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-comma-operator"
         }
       }
     }
diff --git a/javascript/operators/comparison.json b/javascript/operators/comparison.json
index 5465995f2e24bf..210f990c60b6f2 100644
--- a/javascript/operators/comparison.json
+++ b/javascript/operators/comparison.json
@@ -54,7 +54,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-relational-operators"
           }
         },
         "inequality": {
@@ -109,7 +110,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-relational-operators"
           }
         },
         "identity": {
@@ -164,7 +166,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-relational-operators"
           }
         },
         "non_identity": {
@@ -219,7 +222,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-relational-operators"
           }
         },
         "greater_than": {
@@ -274,7 +278,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-relational-operators"
           }
         },
         "greater_than_or_equal": {
@@ -329,7 +334,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-relational-operators"
           }
         },
         "less_than": {
@@ -384,7 +390,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-relational-operators"
           }
         },
         "less_than_or_equal": {
@@ -439,7 +446,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-relational-operators"
           }
         }
       }
diff --git a/javascript/operators/conditional.json b/javascript/operators/conditional.json
index daea4fa2ec088f..7b77584db0bbef 100644
--- a/javascript/operators/conditional.json
+++ b/javascript/operators/conditional.json
@@ -53,7 +53,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-conditional-operator"
         }
       }
     }
diff --git a/javascript/operators/delete.json b/javascript/operators/delete.json
index 11af46fcfc151d..10809424dd7402 100644
--- a/javascript/operators/delete.json
+++ b/javascript/operators/delete.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-delete-operator"
         },
         "temporal_dead_zone": {
           "__compat": {
diff --git a/javascript/operators/destructuring.json b/javascript/operators/destructuring.json
index 07c2e835846239..c858e371105809 100644
--- a/javascript/operators/destructuring.json
+++ b/javascript/operators/destructuring.json
@@ -55,7 +55,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-destructuring-assignment"
         },
         "computed_property_names": {
           "__compat": {
diff --git a/javascript/operators/function.json b/javascript/operators/function.json
index e4cbdae2b74737..d6aecea9918cb5 100644
--- a/javascript/operators/function.json
+++ b/javascript/operators/function.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-function-definitions"
         },
         "trailing_comma": {
           "__compat": {
diff --git a/javascript/operators/function_star.json b/javascript/operators/function_star.json
index c961cc1c1cb00e..fe171a40a5e09a 100644
--- a/javascript/operators/function_star.json
+++ b/javascript/operators/function_star.json
@@ -53,7 +53,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-generator-function-definitions"
         },
         "trailing_comma": {
           "__compat": {
diff --git a/javascript/operators/grouping.json b/javascript/operators/grouping.json
index d1226f06688ea6..648051a4040c11 100644
--- a/javascript/operators/grouping.json
+++ b/javascript/operators/grouping.json
@@ -53,7 +53,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-grouping-operator"
         }
       }
     }
diff --git a/javascript/operators/in.json b/javascript/operators/in.json
index 2fc61f75cc103f..651f165e34c63f 100644
--- a/javascript/operators/in.json
+++ b/javascript/operators/in.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-relational-operators"
         }
       }
     }
diff --git a/javascript/operators/instanceof.json b/javascript/operators/instanceof.json
index e7353a6594b768..5b7640920577f1 100644
--- a/javascript/operators/instanceof.json
+++ b/javascript/operators/instanceof.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-relational-operators"
         }
       }
     }
diff --git a/javascript/operators/logical.json b/javascript/operators/logical.json
index 7c2cd520436b6f..9de347a916d206 100644
--- a/javascript/operators/logical.json
+++ b/javascript/operators/logical.json
@@ -54,7 +54,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-binary-logical-operators"
           }
         },
         "or": {
@@ -109,7 +110,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-binary-logical-operators"
           }
         },
         "not": {
@@ -164,7 +166,8 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": "https://tc39.github.io/ecma262/#sec-binary-logical-operators"
           }
         }
       }
diff --git a/javascript/operators/new.json b/javascript/operators/new.json
index f483766e7cf51b..03dfdf83138a43 100644
--- a/javascript/operators/new.json
+++ b/javascript/operators/new.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-new-operator"
         }
       }
     }
diff --git a/javascript/operators/new_target.json b/javascript/operators/new_target.json
index b4552d620bbeb1..18fe4ac91b1a9c 100644
--- a/javascript/operators/new_target.json
+++ b/javascript/operators/new_target.json
@@ -53,7 +53,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-built-in-function-objects"
         }
       }
     }
diff --git a/javascript/operators/object_initializer.json b/javascript/operators/object_initializer.json
index bf822ad000f7fc..8c03592e0839b4 100644
--- a/javascript/operators/object_initializer.json
+++ b/javascript/operators/object_initializer.json
@@ -53,7 +53,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-object-initializer"
         },
         "computed_property_names": {
           "__compat": {
diff --git a/javascript/operators/pipeline.json b/javascript/operators/pipeline.json
index c0e0902e744c77..7bdf3b1a930028 100644
--- a/javascript/operators/pipeline.json
+++ b/javascript/operators/pipeline.json
@@ -65,7 +65,8 @@
             "experimental": true,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/proposal-pipeline-operator/#sec-intro"
         }
       }
     }
diff --git a/javascript/operators/property_accessors.json b/javascript/operators/property_accessors.json
index ce2cb0a21031fa..0025a60a1797fa 100644
--- a/javascript/operators/property_accessors.json
+++ b/javascript/operators/property_accessors.json
@@ -53,7 +53,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-property-accessors"
         }
       }
     }
diff --git a/javascript/operators/spread.json b/javascript/operators/spread.json
index 4431f75a8d8b32..469e00f7689ffd 100644
--- a/javascript/operators/spread.json
+++ b/javascript/operators/spread.json
@@ -65,7 +65,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-array-initializer",
+              "https://tc39.github.io/ecma262/#sec-object-initializer"
+            ]
           }
         },
         "spread_in_function_calls": {
@@ -131,7 +135,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-array-initializer",
+              "https://tc39.github.io/ecma262/#sec-object-initializer"
+            ]
           }
         },
         "spread_in_destructuring": {
@@ -251,7 +259,11 @@
               "experimental": true,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-array-initializer",
+              "https://tc39.github.io/ecma262/#sec-object-initializer"
+            ]
           }
         }
       }
diff --git a/javascript/operators/super.json b/javascript/operators/super.json
index aac24c136ca5da..df1d5a3b4d0b4a 100644
--- a/javascript/operators/super.json
+++ b/javascript/operators/super.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-super-keyword"
         }
       }
     }
diff --git a/javascript/operators/this.json b/javascript/operators/this.json
index 7b4bfa038c5ec8..0e0f8e11ee8dbb 100644
--- a/javascript/operators/this.json
+++ b/javascript/operators/this.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-this-keyword"
         }
       }
     }
diff --git a/javascript/operators/typeof.json b/javascript/operators/typeof.json
index 82858ffb06c300..40a6f2af575704 100644
--- a/javascript/operators/typeof.json
+++ b/javascript/operators/typeof.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-typeof-operator"
         }
       }
     }
diff --git a/javascript/operators/void.json b/javascript/operators/void.json
index fa9721dae14d49..fe267366f00d38 100644
--- a/javascript/operators/void.json
+++ b/javascript/operators/void.json
@@ -52,7 +52,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-void-operator"
         }
       }
     }
diff --git a/javascript/operators/yield.json b/javascript/operators/yield.json
index f90ebd57bba3df..ed1203c4e0ea65 100644
--- a/javascript/operators/yield.json
+++ b/javascript/operators/yield.json
@@ -65,7 +65,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#prod-YieldExpression"
         },
         "IteratorResult": {
           "__compat": {
diff --git a/javascript/operators/yield_star.json b/javascript/operators/yield_star.json
index 972d38f3d5db6d..a49b6adc879fa2 100644
--- a/javascript/operators/yield_star.json
+++ b/javascript/operators/yield_star.json
@@ -66,7 +66,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-generator-function-definitions-runtime-semantics-evaluation"
         }
       }
     }
diff --git a/javascript/statements.json b/javascript/statements.json
index 598b6c05e26441..90c261a6eb82c4 100644
--- a/javascript/statements.json
+++ b/javascript/statements.json
@@ -121,7 +121,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-async-function-definitions"
         }
       },
       "block": {
@@ -175,7 +176,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-block"
         }
       },
       "break": {
@@ -229,7 +231,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-break-statement"
         }
       },
       "class": {
@@ -283,7 +286,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-class-definitions"
         },
         "array_subclassing": {
           "__compat": {
@@ -453,7 +457,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-let-and-const-declarations"
         }
       },
       "continue": {
@@ -507,7 +512,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-continue-statement"
         }
       },
       "debugger": {
@@ -561,7 +567,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-debugger-statement"
         }
       },
       "default": {
@@ -617,7 +624,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-switch-statement",
+              "https://tc39.github.io/ecma262/#sec-exports"
+            ]
           }
         },
         "export": {
@@ -707,7 +718,11 @@
               "experimental": false,
               "standard_track": true,
               "deprecated": false
-            }
+            },
+            "spec_url": [
+              "https://tc39.github.io/ecma262/#sec-switch-statement",
+              "https://tc39.github.io/ecma262/#sec-exports"
+            ]
           }
         }
       },
@@ -763,7 +778,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-do-while-statement"
         }
       },
       "empty": {
@@ -818,7 +834,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-empty-statement"
         }
       },
       "export": {
@@ -907,7 +924,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-exports"
         }
       },
       "for": {
@@ -961,7 +979,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-for-statement"
         }
       },
       "for_each_in": {
@@ -1073,7 +1092,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-for-in-and-for-of-statements"
         }
       },
       "for_of": {
@@ -1130,7 +1150,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-for-in-and-for-of-statements"
         },
         "async_iterators": {
           "__compat": {
@@ -1292,7 +1313,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-function-definitions"
         },
         "allow_in_sloppy_mode": {
           "__compat": {
@@ -1466,7 +1488,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-generator-function-definitions"
         },
         "IteratorResult_object": {
           "__compat": {
@@ -1683,7 +1706,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-if-statement"
         }
       },
       "import": {
@@ -1779,7 +1803,11 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": [
+            "https://github.com/tc39/proposal-dynamic-import/#import",
+            "https://tc39.github.io/ecma262/#sec-imports"
+          ]
         },
         "dynamic_import": {
           "__compat": {
@@ -1876,7 +1904,11 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": [
+            "https://github.com/tc39/proposal-import-meta/#importmeta",
+            "https://html.spec.whatwg.org/multipage/webappapis.html#hostgetimportmetaproperties"
+          ]
         }
       },
       "label": {
@@ -1930,7 +1962,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-labelled-statements"
         }
       },
       "let": {
@@ -2040,7 +2073,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-let-and-const-declarations"
         }
       },
       "return": {
@@ -2094,7 +2128,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-return-statement"
         }
       },
       "switch": {
@@ -2148,7 +2183,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-switch-statement"
         }
       },
       "throw": {
@@ -2202,7 +2238,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-throw-statement"
         }
       },
       "try_catch": {
@@ -2257,7 +2294,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-try-statement"
         },
         "conditional_clauses": {
           "__compat": {
@@ -2421,7 +2459,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-variable-statement"
         }
       },
       "while": {
@@ -2475,7 +2514,8 @@
             "experimental": false,
             "standard_track": true,
             "deprecated": false
-          }
+          },
+          "spec_url": "https://tc39.github.io/ecma262/#sec-while-statement"
         }
       },
       "with": {
diff --git a/schemas/compat-data.schema.json b/schemas/compat-data.schema.json
index 0a975bd10d9887..90e2b88575dc39 100644
--- a/schemas/compat-data.schema.json
+++ b/schemas/compat-data.schema.json
@@ -147,6 +147,24 @@
           "pattern": "^https:\/\/developer\\.mozilla\\.org\/docs\/",
           "description": "A URL that points to an MDN reference page documenting the feature. The URL should be language-agnostic."
         },
+        "spec_url": {
+          "description": "An optional URL or array of URLs, each of which is for a specific part of a specification in which this feature is defined. Each URL must contain a fragment identifier.",
+          "anyOf": [
+            {
+              "type": "string",
+              "format": "uri",
+              "pattern": "^http(s)?:\/\/[^#]+#.+"
+            },
+            {
+              "type": "array",
+              "items": {
+                "type": "string",
+                "format": "uri",
+                "pattern": "^http(s)?:\/\/[^#]+#.+"
+              }
+            }
+          ]
+        },
         "support": { "$ref": "#/definitions/support_block" },
         "status": { "$ref": "#/definitions/status_block" }
       },