Use strict types

build.js

@@ -57,7 +57,8 @@ function onwhatwg(response) {
     let index = -1
 
     while (++index < nodes.length) {
-      const id = String(nodes[index].properties.id || '')
+      const node = nodes[index]
+      const id = String((node.properties || {}).id || '')
       const data = toString(nodes[index])
 
       if (
@@ -79,9 +80,16 @@ function done() {
   if (count === 2) {
     fs.writeFile(
       'index.js',
-      'export const htmlTagNames = ' +
-        JSON.stringify(htmlTagNames.sort(), null, 2) +
-        '\n',
+      [
+        '/**',
+        ' * List of known HTML tag names.',
+        ' *',
+        ' * @type {Array<string>}',
+        ' */',
+        'export const htmlTagNames = ' +
+          JSON.stringify(htmlTagNames.sort(), null, 2),
+        ''
+      ].join('\n'),
       bail
     )
   }

index.js

@@ -1,3 +1,8 @@
+/**
+ * List of known HTML tag names.
+ *
+ * @type {Array<string>}
+ */
 export const htmlTagNames = [
   'a',
   'abbr',

package.json

@@ -52,13 +52,13 @@
     "xo": "^0.46.0"
   },
   "scripts": {
-    "prepack": "npm run build && npm run format",
-    "build": "rimraf \"*.d.ts\" && tsc && type-coverage",
     "generate": "node build",
+    "prepublishOnly": "npm run build && npm run format",
+    "build": "rimraf \"*.d.ts\" && tsc && type-coverage",
     "format": "remark . -qfo && prettier . -w --loglevel warn && xo --fix",
-    "test-api": "node test.js",
-    "test-coverage": "c8 --check-coverage --branches 100 --functions 100 --lines 100 --statements 100 --reporter lcov node test.js",
-    "test": "npm run build && npm run format && npm run test-coverage"
+    "test-api": "node --conditions development test.js",
+    "test-coverage": "c8 --check-coverage --branches 100 --functions 100 --lines 100 --statements 100 --reporter lcov npm run test-api",
+    "test": "npm run generate && npm run build && npm run format && npm run test-coverage"
   },
   "prettier": {
     "tabWidth": 2,
@@ -79,6 +79,7 @@
   "typeCoverage": {
     "atLeast": 100,
     "detail": true,
-    "strict": true
+    "strict": true,
+    "ignoreCatch": true
   }
 }

tsconfig.json

@@ -1,5 +1,4 @@
 {
-  "files": ["index.js"],
   "include": ["*.js"],
   "compilerOptions": {
     "target": "ES2020",
@@ -11,6 +10,7 @@
     "declaration": true,
     "emitDeclarationOnly": true,
     "allowSyntheticDefaultImports": true,
-    "skipLibCheck": true
+    "skipLibCheck": true,
+    "strict": true
   }
 }