Remove some needless imports (#560)

index.js

@@ -3,17 +3,14 @@ const path = require('path');
 const {ESLint} = require('eslint');
 const globby = require('globby');
 const isEqual = require('lodash/isEqual');
-const uniq = require('lodash/uniq');
-const pick = require('lodash/pick');
-const omit = require('lodash/omit');
 const micromatch = require('micromatch');
 const arrify = require('arrify');
 const pReduce = require('p-reduce');
 const pMap = require('p-map');
 const {cosmiconfig, defaultLoaders} = require('cosmiconfig');
 const defineLazyProperty = require('define-lazy-prop');
 const pFilter = require('p-filter');
-const {CONFIG_FILES, MODULE_NAME, DEFAULT_IGNORES, LINT_METHOD_OPTIONS} = require('./lib/constants');
+const {CONFIG_FILES, MODULE_NAME, DEFAULT_IGNORES} = require('./lib/constants');
 const {
 	normalizeOptions,
 	getIgnores,
@@ -104,9 +101,9 @@ const globFiles = async (patterns, {ignores, extensions, cwd}) => (
 
 const getConfig = async options => {
 	const {options: foundOptions, prettierOptions} = mergeWithFileConfig(normalizeOptions(options));
-	options = buildConfig(foundOptions, prettierOptions);
-	const engine = new ESLint(omit(options, LINT_METHOD_OPTIONS));
-	return engine.calculateConfigForFile(options.filePath);
+	const {filePath, warnIgnored, ...eslintOptions} = buildConfig(foundOptions, prettierOptions);
+	const engine = new ESLint(eslintOptions);
+	return engine.calculateConfigForFile(filePath);
 };
 
 const lintText = async (string, inputOptions = {}) => {
@@ -117,15 +114,16 @@ const lintText = async (string, inputOptions = {}) => {
 		throw new Error('The `ignores` option requires the `filePath` option to be defined.');
 	}
 
-	const engine = new ESLint(omit(options, LINT_METHOD_OPTIONS));
+	const {filePath, warnIgnored, ...eslintOptions} = options;
+	const engine = new ESLint(eslintOptions);
 
-	if (options.filePath) {
-		const filename = path.relative(options.cwd, options.filePath);
+	if (filePath) {
+		const filename = path.relative(options.cwd, filePath);
 
 		if (
 			micromatch.isMatch(filename, options.baseConfig.ignorePatterns) ||
-			globby.gitignore.sync({cwd: options.cwd, ignore: options.baseConfig.ignorePatterns})(options.filePath) ||
-			await engine.isPathIgnored(options.filePath)
+			globby.gitignore.sync({cwd: options.cwd, ignore: options.baseConfig.ignorePatterns})(filePath) ||
+			await engine.isPathIgnored(filePath)
 		) {
 			return {
 				errorCount: 0,
@@ -140,7 +138,7 @@ const lintText = async (string, inputOptions = {}) => {
 		}
 	}
 
-	const report = await engine.lintText(string, pick(options, LINT_METHOD_OPTIONS));
+	const report = await engine.lintText(string, {filePath, warnIgnored});
 
 	return processReport(report, {isQuiet: inputOptions.quiet});
 };
@@ -164,7 +162,7 @@ const lintFiles = async (patterns, inputOptions = {}) => {
 			[]) :
 		await globFiles(patterns, mergeOptions(inputOptions));
 
-	return mergeReports(await pMap(await mergeWithFileConfigs(uniq(paths), inputOptions, configFiles), async ({files, options, prettierOptions}) => runEslint(files, buildConfig(options, prettierOptions), {isQuiet: options.quiet})));
+	return mergeReports(await pMap(await mergeWithFileConfigs([...new Set(paths)], inputOptions, configFiles), async ({files, options, prettierOptions}) => runEslint(files, buildConfig(options, prettierOptions), {isQuiet: options.quiet})));
 };
 
 const getFormatter = async name => {

lib/constants.js

@@ -137,8 +137,6 @@ const TSCONFIG_DEFFAULTS = {
 
 const CACHE_DIR_NAME = 'xo-linter';
 
-const LINT_METHOD_OPTIONS = ['filePath', 'warnIgnored'];
-
 module.exports = {
 	DEFAULT_IGNORES,
 	DEFAULT_EXTENSION,
@@ -149,6 +147,5 @@ module.exports = {
 	CONFIG_FILES,
 	MERGE_OPTIONS_CONCAT,
 	TSCONFIG_DEFFAULTS,
-	CACHE_DIR_NAME,
-	LINT_METHOD_OPTIONS
+	CACHE_DIR_NAME
 };