Fixes microsoft#137568

Author: jeanp413

build/gulpfile.extensions.js

@@ -209,6 +209,7 @@ exports.watchExtensionMedia = watchExtensionMedia;
 
 const compileExtensionMediaBuildTask = task.define('compile-extension-media-build', () => ext.buildExtensionMedia(false, '.build/extensions'));
 gulp.task(compileExtensionMediaBuildTask);
+exports.compileExtensionMediaBuildTask = compileExtensionMediaBuildTask;
 
 //#endregion
 

build/gulpfile.reh.js

@@ -25,7 +25,7 @@ const File = require('vinyl');
 const fs = require('fs');
 const glob = require('glob');
 const { compileBuildTask } = require('./gulpfile.compile');
-const { compileExtensionsBuildTask } = require('./gulpfile.extensions');
+const { compileExtensionsBuildTask, compileExtensionMediaBuildTask } = require('./gulpfile.extensions');
 const { vscodeWebEntryPoints, vscodeWebResourceIncludes, createVSCodeWebFileContentMapper } = require('./gulpfile.vscode.web');
 const cp = require('child_process');
 
@@ -385,6 +385,7 @@ function packageTask(type, platform, arch, sourceFolderName, destinationFolderNa
 			const serverTask = task.define(`vscode-${type}${dashed(platform)}${dashed(arch)}${dashed(minified)}`, task.series(
 				compileBuildTask,
 				compileExtensionsBuildTask,
+				compileExtensionMediaBuildTask,
 				minified ? minifyTask : optimizeTask,
 				serverTaskCI
 			));

build/gulpfile.vscode.js

@@ -31,7 +31,7 @@ const { config } = require('./lib/electron');
 const createAsar = require('./lib/asar').createAsar;
 const minimist = require('minimist');
 const { compileBuildTask } = require('./gulpfile.compile');
-const { compileExtensionsBuildTask } = require('./gulpfile.extensions');
+const { compileExtensionsBuildTask, compileExtensionMediaBuildTask } = require('./gulpfile.extensions');
 
 // Build
 const vscodeEntryPoints = _.flatten([
@@ -377,6 +377,7 @@ BUILD_TARGETS.forEach(buildTarget => {
 		const vscodeTask = task.define(`vscode${dashed(platform)}${dashed(arch)}${dashed(minified)}`, task.series(
 			compileBuildTask,
 			compileExtensionsBuildTask,
+			compileExtensionMediaBuildTask,
 			minified ? minifyVSCodeTask : optimizeVSCodeTask,
 			vscodeTaskCI
 		));