Add deprecated support to SuggestDataDto

src/vs/vscode.proposed.d.ts

@@ -1277,6 +1277,13 @@ declare module 'vscode' {
 
 	//#region Deprecated support
 
+	export interface CompletionItem {
+		/**
+		 * Indicates if this item is deprecated.
+		 */
+		deprecated?: boolean;
+	}
+
 	export enum DiagnosticTag {
 		/**
 		 * Deprecated or obsolete code

src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts

@@ -341,6 +341,7 @@ export class MainThreadLanguageFeatures implements MainThreadLanguageFeaturesSha
 			commitCharacters: data.k,
 			additionalTextEdits: data.l,
 			command: data.m,
+			deprecated: data.n,
 			// not-standard
 			_id: data.x,
 		};

src/vs/workbench/api/common/extHost.protocol.ts

@@ -937,6 +937,7 @@ export interface SuggestDataDto {
 	k/* commitCharacters */?: string[];
 	l/* additionalTextEdits */?: ISingleEditOperation[];
 	m/* command */?: modes.Command;
+	n/* deprecated */?: boolean;
 	// not-standard
 	x?: ChainedCacheId;
 }

src/vs/workbench/api/common/extHostLanguageFeatures.ts

@@ -736,6 +736,7 @@ class SuggestAdapter {
 			k: item.commitCharacters,
 			l: item.additionalTextEdits && item.additionalTextEdits.map(typeConvert.TextEdit.from),
 			m: this._commands.toInternal(item.command, disposables),
+			n: item.deprecated
 		};
 
 		// 'insertText'-logic