use 'error' instead of 2 in the rule configs

config/plugins.js

@@ -28,36 +28,36 @@ module.exports = {
 		]
 	},
 	rules: {
-		'no-use-extend-native/no-use-extend-native': 2,
-		'promise/param-names': 2,
-		'import/default': 2,
-		'import/export': 2,
-		'import/extensions': [2, {
+		'no-use-extend-native/no-use-extend-native': 'error',
+		'promise/param-names': 'error',
+		'import/default': 'error',
+		'import/export': 'error',
+		'import/extensions': ['error', {
 			js: 'never',
 			json: 'never',
 			jsx: 'never'
 		}],
-		'import/first': 2,
-		'import/named': 2,
-		'import/namespace': [2, {allowComputed: true}],
-		'import/no-absolute-path': 2,
-		'import/no-dynamic-require': 2,
-		'import/no-webpack-loader-syntax': 2,
-		'import/newline-after-import': 2,
-		'import/no-amd': 2,
+		'import/first': 'error',
+		'import/named': 'error',
+		'import/namespace': ['error', {allowComputed: true}],
+		'import/no-absolute-path': 'error',
+		'import/no-dynamic-require': 'error',
+		'import/no-webpack-loader-syntax': 'error',
+		'import/newline-after-import': 'error',
+		'import/no-amd': 'error',
 		// enable this sometime in the future when Node.js has ES2015 module support
-		// 'import/unambiguous': 2,
+		// 'import/unambiguous': 'error',
 		// enable this sometime in the future when Node.js has ES2015 module support
-		// 'import/no-commonjs': 2,
+		// 'import/no-commonjs': 'error',
 		// looks useful, but too unstable at the moment
-		// 'import/no-deprecated': 2,
-		'import/no-extraneous-dependencies': 2,
-		'import/no-mutable-exports': 2,
-		'import/no-named-as-default-member': 2,
-		'import/no-named-as-default': 2,
-		'import/no-unresolved': [2, {commonjs: true}],
-		'import/order': 2,
-		'import/prefer-default-export': 2,
-		'import/no-unassigned-import': 2
+		// 'import/no-deprecated': 'error',
+		'import/no-extraneous-dependencies': 'error',
+		'import/no-mutable-exports': 'error',
+		'import/no-named-as-default-member': 'error',
+		'import/no-named-as-default': 'error',
+		'import/no-unresolved': ['error', {commonjs: true}],
+		'import/order': 'error',
+		'import/prefer-default-export': 'error',
+		'import/no-unassigned-import': 'error'
 	}
 };

options-manager.js

@@ -92,19 +92,19 @@ function buildConfig(opts) {
 
 	if (opts.space) {
 		const spaces = typeof opts.space === 'number' ? opts.space : 2;
-		config.rules.indent = [2, spaces, {SwitchCase: 1}];
+		config.rules.indent = ['error', spaces, {SwitchCase: 1}];
 
 		// only apply if the user has the React plugin
 		if (opts.cwd && resolveFrom(opts.cwd, 'eslint-plugin-react')) {
 			config.plugins = config.plugins.concat('react');
-			config.rules['react/jsx-indent-props'] = [2, spaces];
-			config.rules['react/jsx-indent'] = [2, spaces];
+			config.rules['react/jsx-indent-props'] = ['error', spaces];
+			config.rules['react/jsx-indent'] = ['error', spaces];
 		}
 	}
 
 	if (opts.semicolon === false) {
-		config.rules.semi = [2, 'never'];
-		config.rules['semi-spacing'] = [2, {
+		config.rules.semi = ['error', 'never'];
+		config.rules['semi-spacing'] = ['error', {
 			before: false,
 			after: true
 		}];

test/api.js

@@ -26,7 +26,7 @@ test('.lintText() - JSX support', t => {
 test('.lintText() - plugin support', t => {
 	const results = fn.lintText('var React;\nReact.render(<App/>);\n', {
 		plugins: ['react'],
-		rules: {'react/jsx-no-undef': 2}
+		rules: {'react/jsx-no-undef': 'error'}
 	}).results;
 	t.true(hasRule(results, 'react/jsx-no-undef'));
 });

test/options-manager.js

@@ -44,27 +44,27 @@ test('buildConfig: esnext', t => {
 
 test('buildConfig: space: true', t => {
 	const config = manager.buildConfig({space: true});
-	t.deepEqual(config.rules.indent, [2, 2, {SwitchCase: 1}]);
+	t.deepEqual(config.rules.indent, ['error', 2, {SwitchCase: 1}]);
 });
 
 test('buildConfig: space: 4', t => {
 	const config = manager.buildConfig({space: 4});
-	t.deepEqual(config.rules.indent, [2, 4, {SwitchCase: 1}]);
+	t.deepEqual(config.rules.indent, ['error', 4, {SwitchCase: 1}]);
 });
 
 test('buildConfig: semicolon', t => {
 	const config = manager.buildConfig({semicolon: false});
 	t.deepEqual(config.rules, {
-		'semi': [2, 'never'],
-		'semi-spacing': [2, {
+		'semi': ['error', 'never'],
+		'semi-spacing': ['error', {
 			before: false,
 			after: true
 		}]
 	});
 });
 
 test('buildConfig: rules', t => {
-	const rules = {'object-curly-spacing': [2, 'always']};
+	const rules = {'object-curly-spacing': ['error', 'always']};
 	const config = manager.buildConfig({rules});
 	t.deepEqual(config.rules, rules);
 });