propose CompletionList#isDetailsResolved, #39441

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

@@ -367,6 +367,7 @@ export class MainThreadLanguageFeatures implements MainThreadLanguageFeaturesSha
 					return {
 						suggestions: result.b.map(d => MainThreadLanguageFeatures._inflateSuggestDto(result.a, d)),
 						incomplete: result.c,
+						isDetailsResolved: result.d,
 						dispose: () => typeof result.x === 'number' && this._proxy.$releaseCompletionItems(handle, result.x)
 					};
 				});

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

@@ -1012,6 +1012,7 @@ export interface ISuggestResultDto {
 	a: { insert: IRange, replace: IRange; };
 	b: ISuggestDataDto[];
 	c?: boolean;
+	d?: boolean;
 }
 
 export interface ISignatureHelpDto {

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

@@ -787,7 +787,8 @@ class SuggestAdapter {
 				x: pid,
 				b: [],
 				a: { replace: typeConvert.Range.from(replaceRange), insert: typeConvert.Range.from(insertRange) },
-				c: list.isIncomplete || undefined
+				c: list.isIncomplete || undefined,
+				d: list.isDetailsResolved || undefined
 			};
 
 			for (let i = 0; i < list.items.length; i++) {

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

@@ -1395,7 +1395,7 @@ export class CompletionItem implements vscode.CompletionItem {
 export class CompletionList {
 
 	isIncomplete?: boolean;
-
+	isDetailsResolved?: boolean;
 	items: vscode.CompletionItem[];
 
 	constructor(items: vscode.CompletionItem[] = [], isIncomplete: boolean = false) {