Merge commit '6e92d2345e8231a44556ce7d416451f5f3e6c398' as 'engine262'

2026-08-18 21:31:46 +00:00 · 2026-03-27 10:07:29 +05:30
parent 8f26db5a1f 6e92d2345e
commit b42a69d9f8
433 changed files with 90478 additions and 0 deletions
@@ -0,0 +1,103 @@
+/* eslint-disable no-console */
+import { opendir, readFile, writeFile } from 'fs/promises';
+import { join } from 'path';
+import {
+  createSourceFile, isCallExpression, isIdentifier, isPropertyAccessExpression, isStringLiteral, ScriptTarget,
+} from 'typescript';
+
+async function* readdir(dir: string): AsyncGenerator<string> {
+  for await (const dirent of await opendir(dir)) {
+    const p = join(dir, dirent.name);
+    if (dirent.isDirectory()) {
+      yield* readdir(p);
+    } else {
+      yield p;
+    }
+  }
+}
+
+const list = ['EvalError', 'RangeError', 'ReferenceError', 'SyntaxError', 'TypeError', 'URIError', 'Error', 'AggregateError'];
+const messages = new Set<string>();
+const promises: Promise<void>[] = [];
+for await (const filePath of readdir(join(import.meta.dirname, '../src/'))) {
+  if (!filePath.endsWith('.mts')) {
+    continue;
+  }
+  promises.push(readFile(filePath, 'utf8').then((content) => {
+    const sourceFile = createSourceFile(filePath, content, {
+      languageVersion: ScriptTarget.ESNext,
+    });
+    sourceFile.forEachChild(function visitor(node) {
+      if (
+        isCallExpression(node)
+        && isPropertyAccessExpression(node.expression)
+        && isIdentifier(node.expression.expression)
+        && node.expression.expression.escapedText === 'Throw'
+        && isIdentifier(node.expression.name)
+        && list.includes(node.expression.name.escapedText as string)
+        && node.arguments.length >= 1
+      ) {
+        if (!isStringLiteral(node.arguments[0])) {
+          console.warn(`Non-literal error message in ${filePath}`);
+        } else {
+          messages.add(node.arguments[0].text);
+        }
+      }
+      node.forEachChild(visitor);
+    });
+  }));
+}
+
+await Promise.all(promises);
+
+const sortedMessages = Array.from(messages).sort();
+
+const old = await readFile(join(import.meta.dirname, '../src/host-defined/error-messages.mts'), 'utf8');
+
+const autoGenStart = '// auto-generate start';
+const autoGenEnd = '// auto-generate end';
+
+const beforeAutoGen = old.slice(0, old.indexOf(autoGenStart) + autoGenStart.length);
+const afterAutoGen = old.slice(old.indexOf(autoGenEnd));
+
+const messagesByParameterCount: string[][] = [];
+sortedMessages.forEach((m) => {
+  // const paramCount = (m.match(/\$\d+/g) || []).length;
+  // const params = Array.from({ length: paramCount }, (_, i) => `$${i + 1}: Formattable`).join(', ');
+  // return `  (m: '${m}'${params ? `, ${params}` : ''}): ThrowCompletion;`;
+  if (m.includes('$3')) {
+    messagesByParameterCount[3] ??= [];
+    messagesByParameterCount[3].push(m);
+  } else if (m.includes('$2')) {
+    messagesByParameterCount[2] ??= [];
+    messagesByParameterCount[2].push(m);
+  } else if (m.includes('$1')) {
+    messagesByParameterCount[1] ??= [];
+    messagesByParameterCount[1].push(m);
+  } else {
+    messagesByParameterCount[0] ??= [];
+    messagesByParameterCount[0].push(m);
+  }
+});
+
+const generatedLines: string[] = [];
+messagesByParameterCount.forEach((group, index) => {
+  const args: string[] = [group.sort().map((m) => (m.includes("'") ? `"${m}"` : `'${m}'`)).join('\n  | '), ...Array(index).fill('Formattable').map((t, i) => `$${i + 1}: ${t}`)];
+  args[0] += '\n  ';
+  generatedLines.push(`  (m:\n${args.join(', ')}): ThrowCompletion;`);
+});
+const generated = generatedLines.join('\n');
+
+const newFileContent = `${beforeAutoGen}
+${generated}
+  ${afterAutoGen}`;
+
+if (newFileContent !== old) {
+  console.log('Updating error-messages.mts');
+  await writeFile(
+    join(import.meta.dirname, '../src/host-defined/error-messages.mts'),
+    newFileContent,
+  );
+} else {
+  console.log('error-messages.mts is up to date');
+}