Add `IOptimizeTaskOpts.fileContentMapper`

build/lib/optimize.js

@@ -70,7 +70,7 @@ function loader(src, bundledFileHeader, bundleLoader) {
     }))
         .pipe(concat('vs/loader.js')));
 }
-function toConcatStream(src, bundledFileHeader, sources, dest) {
+function toConcatStream(src, bundledFileHeader, sources, dest, fileContentMapper) {
     const useSourcemaps = /\.js$/.test(dest) && !/\.nls\.js$/.test(dest);
     // If a bundle ends up including in any of the sources our copyright, then
     // insert a fake source at the beginning of each bundle with our copyright
@@ -91,10 +91,12 @@ function toConcatStream(src, bundledFileHeader, sources, dest) {
     const treatedSources = sources.map(function (source) {
         const root = source.path ? REPO_ROOT_PATH.replace(/\\/g, '/') : '';
         const base = source.path ? root + `/${src}` : '';
+        const path = source.path ? root + '/' + source.path.replace(/\\/g, '/') : 'fake';
+        const contents = source.path ? fileContentMapper(source.contents, path) : source.contents;
         return new VinylFile({
-            path: source.path ? root + '/' + source.path.replace(/\\/g, '/') : 'fake',
+            path: path,
             base: base,
-            contents: Buffer.from(source.contents)
+            contents: Buffer.from(contents)
         });
     });
     return es.readArray(treatedSources)
@@ -102,9 +104,9 @@ function toConcatStream(src, bundledFileHeader, sources, dest) {
         .pipe(concat(dest))
         .pipe(stats_1.createStatsStream(dest));
 }
-function toBundleStream(src, bundledFileHeader, bundles) {
+function toBundleStream(src, bundledFileHeader, bundles, fileContentMapper) {
     return es.merge(bundles.map(function (bundle) {
-        return toConcatStream(src, bundledFileHeader, bundle.sources, bundle.dest);
+        return toConcatStream(src, bundledFileHeader, bundle.sources, bundle.dest, fileContentMapper);
     }));
 }
 const DEFAULT_FILE_HEADER = [
@@ -120,6 +122,7 @@ function optimizeTask(opts) {
     const bundledFileHeader = opts.header || DEFAULT_FILE_HEADER;
     const bundleLoader = (typeof opts.bundleLoader === 'undefined' ? true : opts.bundleLoader);
     const out = opts.out;
+    const fileContentMapper = opts.fileContentMapper || ((contents, _path) => contents);
     return function () {
         const bundlesStream = es.through(); // this stream will contain the bundled files
         const resourcesStream = es.through(); // this stream will contain the resources
@@ -128,7 +131,7 @@ function optimizeTask(opts) {
             if (err || !result) {
                 return bundlesStream.emit('error', JSON.stringify(err));
             }
-            toBundleStream(src, bundledFileHeader, result.files).pipe(bundlesStream);
+            toBundleStream(src, bundledFileHeader, result.files, fileContentMapper).pipe(bundlesStream);
             // Remove css inlined resources
             const filteredResources = resources.slice();
             result.cssInlinedResources.forEach(function (resource) {

build/lib/optimize.ts

@@ -18,7 +18,6 @@ import * as fancyLog from 'fancy-log';
 import * as ansiColors from 'ansi-colors';
 import * as path from 'path';
 import * as pump from 'pump';
-import * as sm from 'source-map';
 import * as terser from 'terser';
 import * as VinylFile from 'vinyl';
 import * as bundle from './bundle';
@@ -48,10 +47,6 @@ export function loaderConfig() {
 
 const IS_OUR_COPYRIGHT_REGEXP = /Copyright \(C\) Microsoft Corporation/i;
 
-declare class FileSourceMap extends VinylFile {
-	public sourceMap: sm.RawSourceMap;
-}
-
 function loader(src: string, bundledFileHeader: string, bundleLoader: boolean): NodeJS.ReadWriteStream {
 	let sources = [
 		`${src}/vs/loader.js`
@@ -84,7 +79,7 @@ function loader(src: string, bundledFileHeader: string, bundleLoader: boolean):
 	);
 }
 
-function toConcatStream(src: string, bundledFileHeader: string, sources: bundle.IFile[], dest: string): NodeJS.ReadWriteStream {
+function toConcatStream(src: string, bundledFileHeader: string, sources: bundle.IFile[], dest: string, fileContentMapper: (contents: string, path: string) => string): NodeJS.ReadWriteStream {
 	const useSourcemaps = /\.js$/.test(dest) && !/\.nls\.js$/.test(dest);
 
 	// If a bundle ends up including in any of the sources our copyright, then
@@ -108,11 +103,13 @@ function toConcatStream(src: string, bundledFileHeader: string, sources: bundle.
 	const treatedSources = sources.map(function (source) {
 		const root = source.path ? REPO_ROOT_PATH.replace(/\\/g, '/') : '';
 		const base = source.path ? root + `/${src}` : '';
+		const path = source.path ? root + '/' + source.path.replace(/\\/g, '/') : 'fake';
+		const contents = source.path ? fileContentMapper(source.contents, path) : source.contents;
 
 		return new VinylFile({
-			path: source.path ? root + '/' + source.path.replace(/\\/g, '/') : 'fake',
+			path: path,
 			base: base,
-			contents: Buffer.from(source.contents)
+			contents: Buffer.from(contents)
 		});
 	});
 
@@ -122,9 +119,9 @@ function toConcatStream(src: string, bundledFileHeader: string, sources: bundle.
 		.pipe(createStatsStream(dest));
 }
 
-function toBundleStream(src: string, bundledFileHeader: string, bundles: bundle.IConcatFile[]): NodeJS.ReadWriteStream {
+function toBundleStream(src: string, bundledFileHeader: string, bundles: bundle.IConcatFile[], fileContentMapper: (contents: string, path: string) => string): NodeJS.ReadWriteStream {
 	return es.merge(bundles.map(function (bundle) {
-		return toConcatStream(src, bundledFileHeader, bundle.sources, bundle.dest);
+		return toConcatStream(src, bundledFileHeader, bundle.sources, bundle.dest, fileContentMapper);
 	}));
 }
 
@@ -162,6 +159,12 @@ export interface IOptimizeTaskOpts {
 	 * (out folder name)
 	 */
 	languages?: Language[];
+	/**
+	 * File contents interceptor
+	 * @param contents The contens of the file
+	 * @param path The absolute file path, always using `/`, even on Windows
+	 */
+	fileContentMapper?: (contents: string, path: string) => string;
 }
 
 const DEFAULT_FILE_HEADER = [
@@ -178,6 +181,7 @@ export function optimizeTask(opts: IOptimizeTaskOpts): () => NodeJS.ReadWriteStr
 	const bundledFileHeader = opts.header || DEFAULT_FILE_HEADER;
 	const bundleLoader = (typeof opts.bundleLoader === 'undefined' ? true : opts.bundleLoader);
 	const out = opts.out;
+	const fileContentMapper = opts.fileContentMapper || ((contents: string, _path: string) => contents);
 
 	return function () {
 		const bundlesStream = es.through(); // this stream will contain the bundled files
@@ -187,7 +191,7 @@ export function optimizeTask(opts: IOptimizeTaskOpts): () => NodeJS.ReadWriteStr
 		bundle.bundle(entryPoints, loaderConfig, function (err, result) {
 			if (err || !result) { return bundlesStream.emit('error', JSON.stringify(err)); }
 
-			toBundleStream(src, bundledFileHeader, result.files).pipe(bundlesStream);
+			toBundleStream(src, bundledFileHeader, result.files, fileContentMapper).pipe(bundlesStream);
 
 			// Remove css inlined resources
 			const filteredResources = resources.slice();