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lib: don't match sourceMappingURL in strings #44658

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29 changes: 18 additions & 11 deletions lib/internal/source_map/source_map_cache.js
Expand Up @@ -41,8 +41,8 @@ const esmSourceMapCache = new SafeMap();
// The generated sources is not mutable, so we can use a Map without memory concerns:
const generatedSourceMapCache = new SafeMap();
const kLeadingProtocol = /^\w+:\/\//;
const kSourceMappingURLMagicComment = /\/[*/]#\s+sourceMappingURL=(?<sourceMappingURL>[^\s]+)/;
const kSourceURLMagicComment = /\/[*/]#\s+sourceURL=(?<sourceURL>[^\s]+)/;
const kSourceMappingURLMagicComment = /\/[*/]#\s+sourceMappingURL=(?<sourceMappingURL>[^\s]+)/g;
const kSourceURLMagicComment = /\/[*/]#\s+sourceURL=(?<sourceURL>[^\s]+)/g;

const { fileURLToPath, pathToFileURL, URL } = require('internal/url');
let SourceMap;
Expand Down Expand Up @@ -80,11 +80,12 @@ function setSourceMapsEnabled(val) {
}

function extractSourceURLMagicComment(content) {
const matchSourceURL = RegExpPrototypeExec(
kSourceURLMagicComment,
content
);
if (matchSourceURL === null) {
let match;
let matchSourceURL;
while ((match = RegExpPrototypeExec(kSourceURLMagicComment, content))) {
matchSourceURL = match;
}
if (matchSourceURL == null) {
return null;
}
let sourceURL = matchSourceURL.groups.sourceURL;
Expand All @@ -104,13 +105,19 @@ function maybeCacheSourceMap(filename, content, cjsModuleInstance, isGeneratedSo
debug(err);
return;
}
const match = RegExpPrototypeExec(kSourceMappingURLMagicComment, content);

let match;
let lastMatch;
while ((match = RegExpPrototypeExec(kSourceMappingURLMagicComment, content))) {
lastMatch = match;
}

if (sourceURL === undefined) {
sourceURL = extractSourceURLMagicComment(content);
}
if (match) {
const data = dataFromUrl(filename, match.groups.sourceMappingURL);
const url = data ? null : match.groups.sourceMappingURL;
if (lastMatch) {
const data = dataFromUrl(filename, lastMatch.groups.sourceMappingURL);
const url = data ? null : lastMatch.groups.sourceMappingURL;
if (cjsModuleInstance) {
cjsSourceMapCache.set(cjsModuleInstance, {
filename,
Expand Down

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13 changes: 13 additions & 0 deletions test/message/source_map_sourcemapping_url_string.js
@@ -0,0 +1,13 @@
// Flags: --enable-source-maps

'use strict';
require('../common');
Error.stackTraceLimit = 2;

try {
require('../fixtures/source-map/typescript-sourcemapping_url_string');
} catch (err) {
setTimeout(() => {
console.info(err);
}, 10);
}
3 changes: 3 additions & 0 deletions test/message/source_map_sourcemapping_url_string.out
@@ -0,0 +1,3 @@
Error: an exception.
at *typescript-sourcemapping_url_string.ts:3:7*
at Module._compile (node:internal/modules/cjs/loader:1129:14)
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