Set indent rule for TS files too (#451)

Author: pvdlg

Diff for: lib/options-manager.js

@@ -282,10 +282,10 @@ const buildXOConfig = options => config => {
 	}
 
 	if (options.space && !options.prettier) {
+		config.rules.indent = ['error', spaces, {SwitchCase: 1}];
+
 		if (options.ts) {
 			config.rules['@typescript-eslint/indent'] = ['error', spaces, {SwitchCase: 1}];
-		} else {
-			config.rules.indent = ['error', spaces, {SwitchCase: 1}];
 		}
 
 		// Only apply if the user has the React plugin

Diff for: test/options-manager.js

@@ -67,6 +67,12 @@ test('buildConfig: space: 4', t => {
 	t.deepEqual(config.rules.indent, ['error', 4, {SwitchCase: 1}]);
 });
 
+test('buildConfig: space: 4 (ts file)', t => {
+	const config = manager.buildConfig({space: 4, ts: true});
+	t.deepEqual(config.rules.indent, ['error', 4, {SwitchCase: 1}]);
+	t.deepEqual(config.rules['@typescript-eslint/indent'], ['error', 4, {SwitchCase: 1}]);
+});
+
 test('buildConfig: semicolon', t => {
 	const config = manager.buildConfig({semicolon: false, nodeVersion: '12'});
 	t.deepEqual(config.rules.semi, ['error', 'never']);