diff --git a/extensions/typescript-language-features/src/features/completions.ts b/extensions/typescript-language-features/src/features/completions.ts
index ad58abcdd72..1806a8beaf5 100644
--- a/extensions/typescript-language-features/src/features/completions.ts
+++ b/extensions/typescript-language-features/src/features/completions.ts
@@ -18,6 +18,7 @@ import * as Previewer from '../utils/previewer';
 import * as typeConverters from '../utils/typeConverters';
 import TypingsStatus from '../utils/typingsStatus';
 import FileConfigurationManager from './fileConfigurationManager';
+import { snippetForFunctionCall } from '../utils/snippetForFunctionCall';
 
 const localize = nls.loadMessageBundle();
 
@@ -624,92 +625,6 @@ class TypeScriptCompletionItemProvider implements vscode.CompletionItemProvider
 	}
 }
 
-export function snippetForFunctionCall(
-	item: { insertText?: string | vscode.SnippetString, label: string },
-	displayParts: ReadonlyArray<Proto.SymbolDisplayPart>
-): vscode.SnippetString {
-	if (item.insertText && typeof item.insertText !== 'string') {
-		return item.insertText;
-	}
-
-	const snippet = new vscode.SnippetString(`${item.insertText || item.label}(`);
-
-	const parameterListParts = getParameterListParts(displayParts, item.label);
-	appendJoinedPlaceholders(snippet, parameterListParts.parts, ', ');
-
-	if (parameterListParts.hasOptionalParameters) {
-		snippet.appendTabstop();
-	}
-	snippet.appendText(')');
-	snippet.appendTabstop(0);
-	return snippet;
-}
-
-function appendJoinedPlaceholders(
-	snippet: vscode.SnippetString,
-	parts: ReadonlyArray<ParamterPart>,
-	joiner: string
-) {
-	for (let i = 0; i < parts.length; ++i) {
-		const paramterPart = parts[i];
-		snippet.appendPlaceholder(paramterPart.text);
-		if (i !== parts.length - 1) {
-			snippet.appendText(joiner);
-		}
-	}
-}
-
-interface ParamterPart {
-	readonly text: string;
-	readonly optional?: boolean;
-}
-
-function getParameterListParts(
-	displayParts: ReadonlyArray<Proto.SymbolDisplayPart>,
-	label: string,
-): {
-		parts: ReadonlyArray<ParamterPart>
-		hasOptionalParameters: boolean
-	} {
-	let parts: ParamterPart[] = [];
-	let isInMethod = false;
-	let hasOptionalParameters = false;
-
-	let parenCount = 0;
-	let i = 0;
-	for (; i < displayParts.length; ++i) {
-		const part = displayParts[i];
-		if ((part.kind === 'methodName' || part.kind === 'functionName' || part.kind === 'text') && part.text === label) {
-			if (parenCount === 0) {
-				isInMethod = true;
-			}
-		} if (part.kind === 'parameterName' && parenCount === 1 && isInMethod) {
-			// Only take top level paren names
-			const next = displayParts[i + 1];
-			// Skip optional parameters
-			const nameIsFollowedByOptionalIndicator = next && next.text === '?';
-			if (!nameIsFollowedByOptionalIndicator) {
-				parts.push(part);
-			}
-			hasOptionalParameters = hasOptionalParameters || nameIsFollowedByOptionalIndicator;
-		} else if (part.kind === 'punctuation') {
-			if (part.text === '(') {
-				++parenCount;
-			} else if (part.text === ')') {
-				--parenCount;
-				if (parenCount <= 0 && isInMethod) {
-					break;
-				}
-			} else if (part.text === '...' && parenCount === 1) {
-				// Found rest parmeter. Do not fill in any further arguments
-				hasOptionalParameters = true;
-				break;
-			}
-		}
-	}
-	return { hasOptionalParameters, parts };
-}
-
 function shouldExcludeCompletionEntry(
 	element: Proto.CompletionEntry,
 	completionConfiguration: CompletionConfiguration
diff --git a/extensions/typescript-language-features/src/test/functionCallSnippet.test.ts b/extensions/typescript-language-features/src/test/functionCallSnippet.test.ts
index 257b0890c26..e8dfeb8ba16 100644
--- a/extensions/typescript-language-features/src/test/functionCallSnippet.test.ts
+++ b/extensions/typescript-language-features/src/test/functionCallSnippet.test.ts
@@ -6,7 +6,7 @@
 import * as assert from 'assert';
 import 'mocha';
 import * as vscode from 'vscode';
-import { snippetForFunctionCall } from '../features/completions';
+import { snippetForFunctionCall } from "../utils/snippetForFunctionCall";
 
 suite('typescript function call snippets', () => {
 	test('Should use label as function name', async () => {
diff --git a/extensions/typescript-language-features/src/utils/snippetForFunctionCall.ts b/extensions/typescript-language-features/src/utils/snippetForFunctionCall.ts
new file mode 100644
index 00000000000..ff44cb1fbf8
--- /dev/null
+++ b/extensions/typescript-language-features/src/utils/snippetForFunctionCall.ts
@@ -0,0 +1,84 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as vscode from 'vscode';
+import * as Proto from '../protocol';
+
+export function snippetForFunctionCall(
+	item: { insertText?: string | vscode.SnippetString; label: string; },
+	displayParts: ReadonlyArray<Proto.SymbolDisplayPart>
+): vscode.SnippetString {
+	if (item.insertText && typeof item.insertText !== 'string') {
+		return item.insertText;
+	}
+	const snippet = new vscode.SnippetString(`${item.insertText || item.label}(`);
+	const parameterListParts = getParameterListParts(displayParts, item.label);
+	appendJoinedPlaceholders(snippet, parameterListParts.parts, ', ');
+	if (parameterListParts.hasOptionalParameters) {
+		snippet.appendTabstop();
+	}
+	snippet.appendText(')');
+	snippet.appendTabstop(0);
+	return snippet;
+}
+
+function appendJoinedPlaceholders(snippet: vscode.SnippetString, parts: ReadonlyArray<ParamterPart>, joiner: string) {
+	for (let i = 0; i < parts.length; ++i) {
+		const paramterPart = parts[i];
+		snippet.appendPlaceholder(paramterPart.text);
+		if (i !== parts.length - 1) {
+			snippet.appendText(joiner);
+		}
+	}
+}
+
+interface ParamterPart {
+	readonly text: string;
+	readonly optional?: boolean;
+}
+
+function getParameterListParts(displayParts: ReadonlyArray<Proto.SymbolDisplayPart>, label: string): {
+	parts: ReadonlyArray<ParamterPart>;
+	hasOptionalParameters: boolean;
+} {
+	let parts: ParamterPart[] = [];
+	let isInMethod = false;
+	let hasOptionalParameters = false;
+	let parenCount = 0;
+	let i = 0;
+	for (; i < displayParts.length; ++i) {
+		const part = displayParts[i];
+		if ((part.kind === 'methodName' || part.kind === 'functionName' || part.kind === 'text') && part.text === label) {
+			if (parenCount === 0) {
+				isInMethod = true;
+			}
+		}
+		if (part.kind === 'parameterName' && parenCount === 1 && isInMethod) {
+			// Only take top level paren names
+			const next = displayParts[i + 1];
+			// Skip optional parameters
+			const nameIsFollowedByOptionalIndicator = next && next.text === '?';
+			if (!nameIsFollowedByOptionalIndicator) {
+				parts.push(part);
+			}
+			hasOptionalParameters = hasOptionalParameters || nameIsFollowedByOptionalIndicator;
+		}
+		else if (part.kind === 'punctuation') {
+			if (part.text === '(') {
+				++parenCount;
+			} else if (part.text === ')') {
+				--parenCount;
+				if (parenCount <= 0 && isInMethod) {
+					break;
+				}
+			} else if (part.text === '...' && parenCount === 1) {
+				// Found rest parmeter. Do not fill in any further arguments
+				hasOptionalParameters = true;
+				break;
+			}
+		}
+	}
+	return { hasOptionalParameters, parts };
+}