diff --git a/src/language/typescript/languageFeatures.ts b/src/language/typescript/languageFeatures.ts
index 37df03d2..2b974841 100644
--- a/src/language/typescript/languageFeatures.ts
+++ b/src/language/typescript/languageFeatures.ts
@@ -459,7 +459,7 @@ export class SuggestAdapter extends Adapter implements languages.CompletionItemP
 			return;
 		}
 
-		const info = await worker.getCompletionsAtPosition(resource.toString(), offset);
+		const info = await worker.getCompletionsAtPosition(resource.toString(), offset, undefined);
 
 		if (!info || model.isDisposed()) {
 			return;
@@ -509,7 +509,11 @@ export class SuggestAdapter extends Adapter implements languages.CompletionItemP
 		const details = await worker.getCompletionEntryDetails(
 			resource.toString(),
 			offset,
-			myItem.label
+			myItem.label,
+			undefined,
+			undefined,
+			undefined,
+			undefined
 		);
 		if (!details) {
 			return myItem;
@@ -1099,7 +1103,8 @@ export class CodeActionAdaptor extends FormatHelper implements languages.CodeAct
 			start,
 			end,
 			errorCodes,
-			formatOptions
+			formatOptions,
+			{}
 		);
 
 		if (!codeFixes || model.isDisposed()) {
diff --git a/src/language/typescript/monaco.contribution.ts b/src/language/typescript/monaco.contribution.ts
index bd3cf2c7..977c4ef7 100644
--- a/src/language/typescript/monaco.contribution.ts
+++ b/src/language/typescript/monaco.contribution.ts
@@ -415,22 +415,37 @@ export interface TypeScriptWorker {
 
 	/**
 	 * Get code completions for the given file and position.
+	 * @param options `typescript.GetCompletionsAtPositionOptions | undefined`
+	 * @param formattingSettings `typescript.FormatCodeSettings`
 	 * @returns `Promise<typescript.CompletionInfo | undefined>`
 	 */
-	getCompletionsAtPosition(fileName: string, position: number): Promise<any | undefined>;
+	getCompletionsAtPosition(
+		fileName: string,
+		position: number,
+		options: any,
+		formattingSettings?: any
+	): Promise<any | undefined>;
 
 	/**
 	 * Get code completion details for the given file, position, and entry.
+	 * @param formatOptions `typescript.FormatCodeOptions | typescript.FormatCodeSettings | undefined`
+	 * @param preferences `typescript.UserPreferences | undefined`
+	 * @param data `typescript.CompletionEntryData | undefined`
 	 * @returns `Promise<typescript.CompletionEntryDetails | undefined>`
 	 */
 	getCompletionEntryDetails(
 		fileName: string,
 		position: number,
-		entry: string
+		entryName: string,
+		formatOptions: any,
+		source: string | undefined,
+		preferences: any,
+		data: any
 	): Promise<any | undefined>;
 
 	/**
 	 * Get signature help items for the item at the given file and position.
+	 * @param options `typescript.SignatureHelpItemsOptions | undefined`
 	 * @returns `Promise<typescript.SignatureHelpItems | undefined>`
 	 */
 	getSignatureHelpItems(fileName: string, position: number, options: any): Promise<any | undefined>;
@@ -531,6 +546,7 @@ export interface TypeScriptWorker {
 	/**
 	 * Get possible code fixes at the given position in the file.
 	 * @param formatOptions `typescript.FormatCodeOptions`
+	 * @param preferences `typescript.UserPreferences`
 	 * @returns `Promise<ReadonlyArray<typescript.CodeFixAction>>`
 	 */
 	getCodeFixesAtPosition(
@@ -538,7 +554,8 @@ export interface TypeScriptWorker {
 		start: number,
 		end: number,
 		errorCodes: number[],
-		formatOptions: any
+		formatOptions: any,
+		preferences: any
 	): Promise<ReadonlyArray<any>>;
 
 	/**
diff --git a/src/language/typescript/tsWorker.ts b/src/language/typescript/tsWorker.ts
index e2661a9d..4e010d39 100644
--- a/src/language/typescript/tsWorker.ts
+++ b/src/language/typescript/tsWorker.ts
@@ -255,27 +255,38 @@ export class TypeScriptWorker implements ts.LanguageServiceHost, ITypeScriptWork
 
 	async getCompletionsAtPosition(
 		fileName: string,
-		position: number
-	): Promise<ts.CompletionInfo | undefined> {
+		position: number,
+		options: ts.GetCompletionsAtPositionOptions | undefined,
+		formattingSettings?: ts.FormatCodeSettings
+	): Promise<ts.WithMetadata<ts.CompletionInfo> | undefined> {
 		if (fileNameIsLib(fileName)) {
 			return undefined;
 		}
-		return this._languageService.getCompletionsAtPosition(fileName, position, undefined);
+		return this._languageService.getCompletionsAtPosition(
+			fileName,
+			position,
+			options,
+			formattingSettings
+		);
 	}
 
 	async getCompletionEntryDetails(
 		fileName: string,
 		position: number,
-		entry: string
+		entryName: string,
+		formatOptions: ts.FormatCodeOptions | ts.FormatCodeSettings | undefined,
+		source: string | undefined,
+		preferences: ts.UserPreferences | undefined,
+		data: ts.CompletionEntryData | undefined
 	): Promise<ts.CompletionEntryDetails | undefined> {
 		return this._languageService.getCompletionEntryDetails(
 			fileName,
 			position,
-			entry,
-			undefined,
-			undefined,
-			undefined,
-			undefined
+			entryName,
+			formatOptions,
+			source,
+			preferences,
+			data
 		);
 	}
 
@@ -340,7 +351,7 @@ export class TypeScriptWorker implements ts.LanguageServiceHost, ITypeScriptWork
 
 	async getFormattingEditsForDocument(
 		fileName: string,
-		options: ts.FormatCodeOptions
+		options: ts.FormatCodeOptions | ts.FormatCodeSettings
 	): Promise<ts.TextChange[]> {
 		if (fileNameIsLib(fileName)) {
 			return [];
@@ -352,7 +363,7 @@ export class TypeScriptWorker implements ts.LanguageServiceHost, ITypeScriptWork
 		fileName: string,
 		start: number,
 		end: number,
-		options: ts.FormatCodeOptions
+		options: ts.FormatCodeOptions | ts.FormatCodeSettings
 	): Promise<ts.TextChange[]> {
 		if (fileNameIsLib(fileName)) {
 			return [];
@@ -364,7 +375,7 @@ export class TypeScriptWorker implements ts.LanguageServiceHost, ITypeScriptWork
 		fileName: string,
 		postion: number,
 		ch: string,
-		options: ts.FormatCodeOptions
+		options: ts.FormatCodeOptions | ts.FormatCodeSettings
 	): Promise<ts.TextChange[]> {
 		if (fileNameIsLib(fileName)) {
 			return [];
@@ -429,12 +440,12 @@ export class TypeScriptWorker implements ts.LanguageServiceHost, ITypeScriptWork
 		start: number,
 		end: number,
 		errorCodes: number[],
-		formatOptions: ts.FormatCodeOptions
+		formatOptions: ts.FormatCodeOptions | ts.FormatCodeSettings,
+		preferences: ts.UserPreferences
 	): Promise<ReadonlyArray<ts.CodeFixAction>> {
 		if (fileNameIsLib(fileName)) {
 			return [];
 		}
-		const preferences = {};
 		try {
 			return this._languageService.getCodeFixesAtPosition(
 				fileName,