Add settings and parser options (#142)

options-manager.js

@@ -52,6 +52,7 @@ function normalizeOpts(opts) {
 		'ignore',
 		'plugin',
 		'rule',
+		'setting',
 		'extend',
 		'extension'
 	].forEach(singular => {
@@ -64,7 +65,7 @@ function normalizeOpts(opts) {
 			return;
 		}
 
-		if (singular !== 'rule') {
+		if (singular !== 'rule' && singular !== 'setting') {
 			value = arrify(value);
 		}
 
@@ -84,6 +85,7 @@ function mergeWithPkgConf(opts) {
 function emptyOptions() {
 	return {
 		rules: {},
+		settings: {},
 		globals: [],
 		envs: [],
 		plugins: [],
@@ -122,10 +124,18 @@ function buildConfig(opts) {
 		config.baseConfig.extends = ['xo/esnext', path.join(__dirname, 'config/plugins.js')];
 	}
 
+	if (opts.parser) {
+		config.baseConfig.parser = opts.parser;
+	}
+
 	if (opts.rules) {
 		Object.assign(config.rules, opts.rules);
 	}
 
+	if (opts.settings) {
+		config.baseConfig.settings = opts.settings;
+	}
+
 	if (opts.extends && opts.extends.length > 0) {
 		// TODO: this logic needs to be improved, preferably use the same code as ESLint
 		// user's configs must be resolved to their absolute paths

readme.md

@@ -180,6 +180,12 @@ Override any of the [default rules](https://github.com/sindresorhus/eslint-confi
 
 Please take a moment to consider if you really need to use this option.
 
+### settings
+
+Type: `object`
+
+Anything you put here gets passed to `settings` in the ESLint configuration; some of the ESLint plugins use this. For example, to configure the `import` ruleset to use the webpack configuration for determining search paths, you can put `{'import/resolver': 'webpack'}` here.
+
 ### semicolon
 
 Type: `boolean`<br>
@@ -205,6 +211,11 @@ Type: `Array`
 
 Allow more extensions to be linted besides `.js` and `.jsx`. Make sure they're supported by ESLint or an ESLint plugin.
 
+### parser
+
+Type: `string`
+
+Tell ESLint what parser to use, e.g. `"babel-eslint"` if you are using language features that ESLint doesn't support yet.
 
 ## Config Overrides
 

test/options-manager.js

@@ -15,6 +15,7 @@ test('normalizeOpts: makes all the opts plural and arrays', t => {
 		ignore: 'test.js',
 		plugin: 'my-plugin',
 		rule: {'my-rule': 'foo'},
+		setting: {'my-rule': 'bar'},
 		extend: 'foo',
 		extension: 'html'
 	});
@@ -25,6 +26,7 @@ test('normalizeOpts: makes all the opts plural and arrays', t => {
 		ignores: ['test.js'],
 		plugins: ['my-plugin'],
 		rules: {'my-rule': 'foo'},
+		settings: {'my-rule': 'bar'},
 		extends: ['foo'],
 		extensions: ['html']
 	});
@@ -74,6 +76,18 @@ test('buildConfig: rules', t => {
 	t.deepEqual(config.rules, rules);
 });
 
+test('buildConfig: parser', t => {
+	const parser = 'babel-eslint';
+	const config = manager.buildConfig({parser});
+	t.deepEqual(config.baseConfig.parser, parser);
+});
+
+test('buildConfig: settings', t => {
+	const settings = {'import/resolver': 'webpack'};
+	const config = manager.buildConfig({settings});
+	t.deepEqual(config.baseConfig.settings, settings);
+});
+
 test('findApplicableOverrides', t => {
 	const result = manager.findApplicableOverrides('/user/dir/foo.js', [
 		{files: '**/f*.js'},