add engine262 js and regex parsers

package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "@engine262/engine262": "^0.0.1-87d618ac7a3df080f966a5862b80ea66a57c1ca4"
+  }
+}

website/package.json

@@ -47,6 +47,7 @@
     "@babel/eslint-parser": "^7.12.0",
     "@babel/runtime": "^7.15.3",
     "@creditkarma/thrift-parser": "^1.2.0",
+    "@engine262/engine262": "^0.0.1-87d618ac7a3df080f966a5862b80ea66a57c1ca4",
     "@gengjiawen/monkey-wasm": "^0.7.0",
     "@glimmer/compiler": "^0.73.1",
     "@glimmer/syntax": "^0.73.1",

website/src/parsers/js/engine262.js

@@ -0,0 +1,66 @@
+import defaultParserInterface from '../utils/defaultParserInterface';
+
+const pkg = {
+  version: '0.0.1-x',
+  homepage: 'https://engine262.js.org',
+};
+
+const ID = 'engine262';
+
+export default {
+  ...defaultParserInterface,
+
+  id: ID,
+  displayName: ID,
+  version: pkg.version,
+  homepage: pkg.homepage,
+  locationProps: new Set(['location']),
+
+  loadParser(callback) {
+    require(['@engine262/engine262'], callback);
+  },
+
+  parse(e262, source, options) {
+    e262.setSurroundingAgent(new e262.Agent());
+    const p = new e262.Parser({ source, json: false });
+    const parseMethod = options.sourceType === 'module' ?
+      'parseModule' :
+      'parseScript';
+    const ast = p[parseMethod]();
+    if (options.earlyErrors && p.earlyErrors.size > 0) {
+      throw [...p.earlyErrors][0];
+    }
+    return ast;
+  },
+
+  nodeToRange({ location }) {
+    if (location) {
+      return [location.startIndex, location.endIndex];
+    }
+  },
+
+  opensByDefault(node, key) {
+    return key !== 'location';
+  },
+
+  getDefaultOptions() {
+    return {
+      earlyErrors: false,
+      sourceType: 'module',
+    };
+  },
+
+  _getSettingsConfiguration() {
+    return {
+      fields: [
+        ['sourceType', ['script', 'module']],
+        'earlyErrors',
+      ],
+    };
+  },
+
+  _ignoredProperties: new Set([
+    'strict',
+    'arrowInfo',
+  ]),
+};

website/src/parsers/regexp/engine262.js

@@ -0,0 +1,59 @@
+import defaultParserInterface from '../utils/defaultParserInterface';
+
+const pkg = {
+  version: '0.0.1-x',
+  homepage: 'https://engine262.js.org',
+};
+
+const ID = 'engine262-re';
+
+export default {
+  ...defaultParserInterface,
+
+  id: ID,
+  displayName: ID,
+  version: pkg.version,
+  homepage: pkg.homepage,
+  locationProps: new Set([]),
+
+  loadParser(callback) {
+    require(['@engine262/engine262'], callback);
+  },
+
+  parse(e262, source, options) {
+    e262.setSurroundingAgent(new e262.Agent());
+    const jsParser = new e262.Parser({ source, json: false });
+    const jsExp = jsParser.parseRegularExpressionLiteral();
+
+    const parse = (flags) => {
+      const p = new e262.RegExpParser(jsExp.RegularExpressionBody);
+      return p.scope(flags, () => p.parsePattern());
+    };
+
+    if (jsExp.RegularExpressionFlags.includes('u')) {
+      return parse({ U: true, N: true });
+    } else {
+      const pattern = parse({ U: false, N: false });
+      if (pattern.groupSpecifiers.size > 0) {
+        return parse({ U: false, N: true });
+      }
+      return pattern;
+    }
+  },
+
+  nodeToRange() {},
+
+  opensByDefault(node, key) {
+    return true;
+  },
+
+  getDefaultOptions() {
+    return {};
+  },
+
+  _getSettingsConfiguration() {
+    return {};
+  },
+
+  _ignoredProperties: new Set(['groupSpecifiers', 'capturingGroups', 'capturingParenthesesBefore']),
+};

website/webpack.config.js

@@ -200,6 +200,7 @@ module.exports = Object.assign({
           path.join(__dirname, 'node_modules', 'tslint'),
           path.join(__dirname, 'node_modules', 'tslib'),
           path.join(__dirname, 'node_modules', 'svelte'),
+          path.join(__dirname, 'node_modules', '@engine262/engine262'),
           path.join(__dirname, 'src'),
         ],
         loader: 'babel-loader',

website/yarn.lock

@@ -1161,6 +1161,11 @@
   resolved "https://registry.yarnpkg.com/@creditkarma/thrift-parser/-/thrift-parser-1.2.0.tgz#69b47dff3d2a5211e9417ff543ea65f681821906"
   integrity sha512-mSRxjSXvU6sBfWhMBWXl7H/XEKWHQ7x+MUDLwyeFIwwX9UaZKPOc7TgGd0N78kcZtIMk82ArdxO6aFhqnBuNtg==
 
+"@engine262/engine262@^0.0.1-87d618ac7a3df080f966a5862b80ea66a57c1ca4":
+  version "0.0.1-87d618ac7a3df080f966a5862b80ea66a57c1ca4"
+  resolved "https://registry.yarnpkg.com/@engine262/engine262/-/engine262-0.0.1-87d618ac7a3df080f966a5862b80ea66a57c1ca4.tgz#a9b6e18a46c264258ec7de6e0ac6cf13acd34c31"
+  integrity sha512-Rx88gj2s0WxDou2+qI6cBELHjpdsVo7heG8h7q9kZtfMYZU7it1dcEpONeptszM1KnrDQTrb4HjKi5nraXw/qQ==
+
 "@formatjs/ecma402-abstract@1.5.0":
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/@formatjs/ecma402-abstract/-/ecma402-abstract-1.5.0.tgz#759c8f11ff45e96f8fb58741e7fbdb41096d5ddd"