Fixes #257: LSP client that doesn't support any workspace capabilitie…

…s will cause an error if the server is using workspace/workspaceFolders
microsoft · Oct 12, 2017 · cbf3d48 · cbf3d48
1 parent c42502f
commit cbf3d48
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/server/src/workspaceFolders.proposed.ts b/server/src/workspaceFolders.proposed.ts
@@ -22,7 +22,7 @@ export const WorkspaceFoldersFeature: WorkspaceFeature<WorkspaceFolders> = (Base
 		private _unregistration: Thenable<Disposable>;
 		public initialize(capabilities: ClientCapabilities): void {
 			let workspaceCapabilities = (capabilities as Proposed.WorkspaceFoldersClientCapabilities).workspace;
-			if (workspaceCapabilities.workspaceFolders) {
+			if (workspaceCapabilities && workspaceCapabilities.workspaceFolders) {
 				this._onDidChangeWorkspaceFolders = new Emitter<Proposed.WorkspaceFoldersChangeEvent>();
 				this.connection.onNotification(Proposed.DidChangeWorkspaceFoldersNotification.type, (params) => {
 					this._onDidChangeWorkspaceFolders.fire(params.event);