diff --git a/extensions/typescript-language-features/src/languageFeatures/languageConfiguration.ts b/extensions/typescript-language-features/src/languageFeatures/languageConfiguration.ts
index 80d64aee524..319c2fdd779 100644
--- a/extensions/typescript-language-features/src/languageFeatures/languageConfiguration.ts
+++ b/extensions/typescript-language-features/src/languageFeatures/languageConfiguration.ts
@@ -15,7 +15,7 @@ import * as languageModeIds from '../utils/languageIds';
 const jsTsLanguageConfiguration: vscode.LanguageConfiguration = {
 	indentationRules: {
 		decreaseIndentPattern: /^((?!.*?\/\*).*\*\/)?\s*[\}\]].*$/,
-		increaseIndentPattern: /^((?!\/\/).)*(\{([^}"'`]*|(\t|[ ])*\/\/.*)|\([^)"'`]*|\[[^\]"'`]*)$/,
+		increaseIndentPattern: /^((?!\/\/).)*(\{([^}"'`/]*|(\t|[ ])*\/\/.*)|\([^)"'`/]*|\[[^\]"'`/]*)$/,
 		// e.g.  * ...| or */| or *-----*/|
 		unIndentedLinePattern: /^(\t|[ ])*[ ]\*[^/]*\*\/\s*$|^(\t|[ ])*[ ]\*\/\s*$|^(\t|[ ])*[ ]\*([ ]([^\*]|\*(?!\/))*)?$/
 	},
diff --git a/src/vs/editor/test/common/modes/supports/onEnter.test.ts b/src/vs/editor/test/common/modes/supports/onEnter.test.ts
index b585d64c479..5e630f31bc7 100644
--- a/src/vs/editor/test/common/modes/supports/onEnter.test.ts
+++ b/src/vs/editor/test/common/modes/supports/onEnter.test.ts
@@ -168,4 +168,22 @@ suite('OnEnter', () => {
 		testIndentAction('', '  * test() {', '', IndentAction.Indent, null, 0);
 		testIndentAction('  ', '  * test() {', '', IndentAction.Indent, null, 0);
 	});
+
+	test('issue #141816', () => {
+		let support = new OnEnterSupport({
+			onEnterRules: javascriptOnEnterRules
+		});
+		let testIndentAction = (beforeText: string, afterText: string, expected: IndentAction) => {
+			let actual = support.onEnter(EditorAutoIndentStrategy.Advanced, '', beforeText, afterText);
+			if (expected === IndentAction.None) {
+				assert.strictEqual(actual, null);
+			} else {
+				assert.strictEqual(actual!.indentAction, expected);
+			}
+		};
+
+		testIndentAction('const r = /{/;', '', IndentAction.None);
+		testIndentAction('const r = /{[0-9]/;', '', IndentAction.None);
+		testIndentAction('const r = /[a-zA-Z]{/;', '', IndentAction.None);
+	});
 });