fix(webpack): es module source mapping improvements

This commit is contained in:
Nathan Walker
2025-11-03 19:25:47 -08:00
parent 2325e338be
commit cfa3e209d8
3 changed files with 150 additions and 41 deletions

View File

@@ -23,7 +23,8 @@ function getConsumer(mapPath: string, sourceMap: any) {
c = new SourceMapConsumer(sourceMap);
consumerCache.set(mapPath, c);
} catch (error) {
console.error(`Failed to create SourceMapConsumer for ${mapPath}:`, error);
// Keep quiet in production-like console; failures just fall back to original stack
console.debug && console.debug(`SourceMapConsumer failed for ${mapPath}:`, error);
return null;
}
}
@@ -67,7 +68,7 @@ function loadAndExtractMap(mapPath: string) {
mapText = binary;
}
} catch (error) {
console.error(`Failed to load source map ${mapPath}:`, error);
console.debug && console.debug(`Failed to load source map ${mapPath}:`, error);
return null;
}
} else {
@@ -108,7 +109,7 @@ function remapFrame(file: string, line: number, column: number) {
try {
return consumer.originalPositionFor({ line, column });
} catch (error) {
console.error(`Failed to get original position for ${file}:${line}:${column}:`, error);
console.debug && console.debug(`Remap failed for ${file}:${line}:${column}:`, error);
return { source: null, line: 0, column: 0 };
}
}
@@ -116,18 +117,36 @@ function remapFrame(file: string, line: number, column: number) {
function remapStack(raw: string): string {
const lines = raw.split('\n');
const out = lines.map((line) => {
const m = /\((.+):(\d+):(\d+)\)/.exec(line);
if (!m) return line;
try {
const [_, file, l, c] = m;
const orig = remapFrame(file, +l, +c);
if (!orig.source) return line;
return line.replace(/\(.+\)/, `(${orig.source}:${orig.line}:${orig.column})`);
} catch (error) {
console.error('Failed to remap stack frame:', line, error);
return line; // return original line if remapping fails
// 1) Parenthesized frame: at fn (file:...:L:C)
let m = /\((.+):(\d+):(\d+)\)/.exec(line);
if (m) {
try {
const [_, file, l, c] = m;
const orig = remapFrame(file, +l, +c);
if (!orig.source) return line;
return line.replace(/\(.+\)/, `(${orig.source}:${orig.line}:${orig.column})`);
} catch (error) {
console.debug && console.debug('Remap failed for frame:', line, error);
return line;
}
}
// 2) Bare frame: at file:///app/vendor.js:L:C (no parentheses)
const bare = /(\s+at\s+)([^\s()]+):(\d+):(\d+)/.exec(line);
if (bare) {
try {
const [, prefix, file, l, c] = bare;
const orig = remapFrame(file, +l, +c);
if (!orig.source) return line;
const replacement = `${prefix}${orig.source}:${orig.line}:${orig.column}`;
return line.replace(bare[0], replacement);
} catch (error) {
console.debug && console.debug('Remap failed for bare frame:', line, error);
return line;
}
}
return line;
});
return out.join('\n');
}
@@ -141,7 +160,7 @@ function remapStack(raw: string): string {
try {
return remapStack(rawStack);
} catch (error) {
console.error('Failed to remap stack trace, returning original:', error);
console.debug && console.debug('Remap failed, returning original:', error);
return rawStack; // fallback to original stack trace
}
};

View File

@@ -24,6 +24,7 @@ import { applyDotEnvPlugin } from '../helpers/dotEnv';
import { env as _env, IWebpackEnv } from '../index';
import { getValue } from '../helpers/config';
import { getIPS } from '../helpers/host';
import FixSourceMapUrlPlugin from '../plugins/FixSourceMapUrlPlugin';
import {
getAvailablePlatforms,
getAbsoluteDistPath,
@@ -178,32 +179,9 @@ export default function (config: Config, env: IWebpackEnv = _env): Config {
// For ESM builds, fix the sourceMappingURL to use correct paths
if (!env.commonjs && sourceMapType && sourceMapType !== 'hidden-source-map') {
class FixSourceMapUrlPlugin {
apply(compiler) {
compiler.hooks.emit.tap('FixSourceMapUrlPlugin', (compilation) => {
const leadingCharacter = process.platform === 'win32' ? '/' : '';
Object.keys(compilation.assets).forEach((filename) => {
if (filename.endsWith('.mjs') || filename.endsWith('.js')) {
const asset = compilation.assets[filename];
let source = asset.source();
// Replace sourceMappingURL to use file:// protocol pointing to actual location
source = source.replace(
/\/\/# sourceMappingURL=(.+\.map)/g,
`//# sourceMappingURL=file://${leadingCharacter}${outputPath}/$1`,
);
compilation.assets[filename] = {
source: () => source,
size: () => source.length,
};
}
});
});
}
}
config.plugin('FixSourceMapUrlPlugin').use(FixSourceMapUrlPlugin);
config
.plugin('FixSourceMapUrlPlugin')
.use(FixSourceMapUrlPlugin as any, [{ outputPath }]);
}
// when using hidden-source-map, output source maps to the `platforms/{platformName}-sourceMaps` folder

View File

@@ -0,0 +1,112 @@
import type { Compiler } from 'webpack';
import { sources } from 'webpack';
export interface FixSourceMapUrlPluginOptions {
outputPath: string;
}
/**
* Ensures sourceMappingURL points to the actual file:// location on device/emulator.
* Handles Webpack 5 asset sources (string/Buffer/Source objects).
*/
export default class FixSourceMapUrlPlugin {
constructor(private readonly options: FixSourceMapUrlPluginOptions) {}
apply(compiler: Compiler) {
const wp: any = (compiler as any).webpack;
const hasProcessAssets =
!!wp?.Compilation?.PROCESS_ASSETS_STAGE_DEV_TOOLING &&
!!(compiler as any).hooks?.thisCompilation;
const leadingCharacter = process.platform === 'win32' ? '/' : '';
const toStringContent = (content: any): string => {
if (typeof content === 'string') return content;
if (Buffer.isBuffer(content)) return content.toString('utf-8');
if (content && typeof content.source === 'function') {
const inner = content.source();
if (typeof inner === 'string') return inner;
if (Buffer.isBuffer(inner)) return inner.toString('utf-8');
try {
return String(inner);
} catch {
return '';
}
}
try {
return String(content);
} catch {
return '';
}
};
const processFile = (filename: string, compilation: any) => {
if (!(filename.endsWith('.mjs') || filename.endsWith('.js'))) return;
// Support both legacy compilation.assets and v5 Asset API
let rawSource: any;
if (typeof (compilation as any).getAsset === 'function') {
const assetObj = (compilation as any).getAsset(filename);
if (assetObj && assetObj.source) {
rawSource = (assetObj.source as any).source
? (assetObj.source as any).source()
: (assetObj.source as any)();
}
}
if (
rawSource === undefined &&
(compilation as any).assets &&
(compilation as any).assets[filename]
) {
const asset = (compilation as any).assets[filename];
rawSource = typeof asset.source === 'function' ? asset.source() : asset;
}
let source = toStringContent(rawSource);
// Replace sourceMappingURL to use file:// protocol pointing to actual location
source = source.replace(
/\/\/\# sourceMappingURL=(.+\.map)/g,
`//# sourceMappingURL=file://${leadingCharacter}${this.options.outputPath}/$1`,
);
// Prefer Webpack 5 updateAsset with RawSource when available
const RawSourceCtor =
wp?.sources?.RawSource || (sources as any)?.RawSource;
if (
typeof (compilation as any).updateAsset === 'function' &&
RawSourceCtor
) {
(compilation as any).updateAsset(filename, new RawSourceCtor(source));
} else {
(compilation as any).assets[filename] = {
source: () => source,
size: () => source.length,
};
}
};
if (hasProcessAssets) {
compiler.hooks.thisCompilation.tap(
'FixSourceMapUrlPlugin',
(compilation: any) => {
const stage = wp.Compilation.PROCESS_ASSETS_STAGE_DEV_TOOLING;
compilation.hooks.processAssets.tap(
{ name: 'FixSourceMapUrlPlugin', stage },
(assets: Record<string, any>) => {
Object.keys(assets).forEach((filename) =>
processFile(filename, compilation),
);
},
);
},
);
} else {
// Fallback for older setups: use emit (may log deprecation in newer webpack)
compiler.hooks.emit.tap('FixSourceMapUrlPlugin', (compilation: any) => {
Object.keys((compilation as any).assets).forEach((filename) =>
processFile(filename, compilation),
);
});
}
}
}