enable proposed api usage via product.json

src/vs/platform/node/product.ts

@@ -31,6 +31,7 @@ export interface IProductConfiguration {
 	exeBasedExtensionTips: { [id: string]: any; };
 	extensionKeywords: { [extension: string]: string[]; };
 	extensionAllowedBadgeProviders: string[];
+	extensionAllowedProposedApi: string[];
 	keymapExtensionTips: string[];
 	crashReporter: {
 		companyName: string;

src/vs/workbench/api/node/extHost.api.impl.ts

@@ -58,6 +58,7 @@ import { ExtHostDecorations } from 'vs/workbench/api/node/extHostDecorations';
 import { toGlobPattern, toLanguageSelector } from 'vs/workbench/api/node/extHostTypeConverters';
 import { ExtensionActivatedByAPI } from 'vs/workbench/api/node/extHostExtensionActivator';
 import { ILogService } from 'vs/platform/log/common/log';
+import { isFalsyOrEmpty } from 'vs/base/common/arrays';
 
 export interface IExtensionApiFactory {
 	(extension: IExtensionDescription): typeof vscode;
@@ -128,8 +129,14 @@ export function createApiFactory(
 
 		const EXTENSION_ID = extension.id;
 
-		if (extension.enableProposedApi && !extension.isBuiltin) {
+		if (!isFalsyOrEmpty(product.extensionAllowedProposedApi)
+			&& product.extensionAllowedProposedApi.indexOf(extension.id) >= 0
+		) {
+			// fast lane -> proposed api is available to all extensions
+			// that are listed in product.json-files
+			extension.enableProposedApi = true;
 
+		} else if (extension.enableProposedApi && !extension.isBuiltin) {
 			if (
 				!initData.environment.enableProposedApiForAll &&
 				initData.environment.enableProposedApiFor.indexOf(extension.id) < 0