From e62c7b64efe407d5d37a1d2a74a5aadd22f8a640 Mon Sep 17 00:00:00 2001
From: Sandeep Somavarapu <sasomava@microsoft.com>
Date: Thu, 19 Apr 2018 11:54:48 +0200
Subject: [PATCH] Put contribution behind proposed flag

---
 src/vs/workbench/api/browser/viewsContainersExtensionPoint.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/vs/workbench/api/browser/viewsContainersExtensionPoint.ts b/src/vs/workbench/api/browser/viewsContainersExtensionPoint.ts
index df12b72fd5c..1d28b391934 100644
--- a/src/vs/workbench/api/browser/viewsContainersExtensionPoint.ts
+++ b/src/vs/workbench/api/browser/viewsContainersExtensionPoint.ts
@@ -78,6 +78,10 @@ class ViewsContainersExtensionHandler implements IWorkbenchContribution {
 		viewsContainersExtensionPoint.setHandler((extensions) => {
 			for (let extension of extensions) {
 				const { value, collector } = extension;
+				if (extension.description.enableProposedApi) {
+					collector.error(localize('proposed', "'{0}' contribution is only available when running out of dev or with the following command line switch: --enable-proposed-api {1}", 'viewsContainer', extension.description.id));
+					continue;
+				}
 				forEach(value, entry => {
 					if (!this.isValidViewsContainer(entry.value, collector)) {
 						return;
-- 
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