mirror of
https://github.com/react/react-native-devtools-frontend.git
synced 2026-10-10 21:54:47 +08:00
Tim van der Lippe
c8f6ffd7c3
Also update the PRESUBMIT linter configuration to make sure it actually runs the linter when updating ESLint. Otherwise, it would not properly do the full linter check. R=jacktfranklin@chromium.org DISABLE_THIRD_PARTY_CHECK=Update ESLint Bug: 1068145 Change-Id: Ibf2de156366dc64c90ee1aced5537d2038e7a268 Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2137384 Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org> Reviewed-by: Jack Franklin <jacktfranklin@chromium.org>
675 lines
23 KiB
JavaScript
675 lines
23 KiB
JavaScript
/**
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* @fileoverview Config initialization wizard.
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* @author Ilya Volodin
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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const util = require("util"),
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path = require("path"),
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inquirer = require("inquirer"),
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ProgressBar = require("progress"),
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semver = require("semver"),
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recConfig = require("../../conf/eslint-recommended"),
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ConfigOps = require("../shared/config-ops"),
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log = require("../shared/logging"),
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naming = require("../shared/naming"),
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ModuleResolver = require("../shared/relative-module-resolver"),
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autoconfig = require("./autoconfig.js"),
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ConfigFile = require("./config-file"),
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npmUtils = require("./npm-utils"),
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{ getSourceCodeOfFiles } = require("./source-code-utils");
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const debug = require("debug")("eslint:config-initializer");
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//------------------------------------------------------------------------------
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// Private
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//------------------------------------------------------------------------------
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const DEFAULT_ECMA_VERSION = 2018;
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/* istanbul ignore next: hard to test fs function */
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/**
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* Create .eslintrc file in the current working directory
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* @param {Object} config object that contains user's answers
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* @param {string} format The file format to write to.
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* @returns {void}
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*/
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function writeFile(config, format) {
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// default is .js
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let extname = ".js";
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if (format === "YAML") {
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extname = ".yml";
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} else if (format === "JSON") {
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extname = ".json";
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}
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const installedESLint = config.installedESLint;
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delete config.installedESLint;
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ConfigFile.write(config, `./.eslintrc${extname}`);
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log.info(`Successfully created .eslintrc${extname} file in ${process.cwd()}`);
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if (installedESLint) {
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log.info("ESLint was installed locally. We recommend using this local copy instead of your globally-installed copy.");
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}
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}
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/**
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* Get the peer dependencies of the given module.
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* This adds the gotten value to cache at the first time, then reuses it.
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* In a process, this function is called twice, but `npmUtils.fetchPeerDependencies` needs to access network which is relatively slow.
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* @param {string} moduleName The module name to get.
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* @returns {Object} The peer dependencies of the given module.
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* This object is the object of `peerDependencies` field of `package.json`.
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* Returns null if npm was not found.
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*/
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function getPeerDependencies(moduleName) {
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let result = getPeerDependencies.cache.get(moduleName);
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if (!result) {
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log.info(`Checking peerDependencies of ${moduleName}`);
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result = npmUtils.fetchPeerDependencies(moduleName);
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getPeerDependencies.cache.set(moduleName, result);
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}
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return result;
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}
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getPeerDependencies.cache = new Map();
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/**
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* Return necessary plugins, configs, parsers, etc. based on the config
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* @param {Object} config config object
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* @param {boolean} [installESLint=true] If `false` is given, it does not install eslint.
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* @returns {string[]} An array of modules to be installed.
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*/
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function getModulesList(config, installESLint) {
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const modules = {};
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// Create a list of modules which should be installed based on config
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if (config.plugins) {
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for (const plugin of config.plugins) {
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const moduleName = naming.normalizePackageName(plugin, "eslint-plugin");
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modules[moduleName] = "latest";
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}
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}
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if (config.extends) {
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const extendList = Array.isArray(config.extends) ? config.extends : [config.extends];
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for (const extend of extendList) {
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if (extend.startsWith("eslint:") || extend.startsWith("plugin:")) {
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continue;
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}
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const moduleName = naming.normalizePackageName(extend, "eslint-config");
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modules[moduleName] = "latest";
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Object.assign(
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modules,
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getPeerDependencies(`${moduleName}@latest`)
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);
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}
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}
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const parser = config.parser || (config.parserOptions && config.parserOptions.parser);
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if (parser) {
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modules[parser] = "latest";
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}
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if (installESLint === false) {
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delete modules.eslint;
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} else {
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const installStatus = npmUtils.checkDevDeps(["eslint"]);
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// Mark to show messages if it's new installation of eslint.
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if (installStatus.eslint === false) {
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log.info("Local ESLint installation not found.");
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modules.eslint = modules.eslint || "latest";
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config.installedESLint = true;
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}
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}
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return Object.keys(modules).map(name => `${name}@${modules[name]}`);
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}
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/**
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* Set the `rules` of a config by examining a user's source code
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*
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* Note: This clones the config object and returns a new config to avoid mutating
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* the original config parameter.
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* @param {Object} answers answers received from inquirer
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* @param {Object} config config object
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* @returns {Object} config object with configured rules
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*/
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function configureRules(answers, config) {
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const BAR_TOTAL = 20,
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BAR_SOURCE_CODE_TOTAL = 4,
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newConfig = Object.assign({}, config),
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disabledConfigs = {};
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let sourceCodes,
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registry;
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// Set up a progress bar, as this process can take a long time
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const bar = new ProgressBar("Determining Config: :percent [:bar] :elapseds elapsed, eta :etas ", {
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width: 30,
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total: BAR_TOTAL
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});
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bar.tick(0); // Shows the progress bar
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// Get the SourceCode of all chosen files
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const patterns = answers.patterns.split(/[\s]+/u);
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try {
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sourceCodes = getSourceCodeOfFiles(patterns, { baseConfig: newConfig, useEslintrc: false }, total => {
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bar.tick((BAR_SOURCE_CODE_TOTAL / total));
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});
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} catch (e) {
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log.info("\n");
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throw e;
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}
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const fileQty = Object.keys(sourceCodes).length;
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if (fileQty === 0) {
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log.info("\n");
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throw new Error("Automatic Configuration failed. No files were able to be parsed.");
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}
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// Create a registry of rule configs
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registry = new autoconfig.Registry();
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registry.populateFromCoreRules();
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// Lint all files with each rule config in the registry
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registry = registry.lintSourceCode(sourceCodes, newConfig, total => {
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bar.tick((BAR_TOTAL - BAR_SOURCE_CODE_TOTAL) / total); // Subtract out ticks used at beginning
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});
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debug(`\nRegistry: ${util.inspect(registry.rules, { depth: null })}`);
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// Create a list of recommended rules, because we don't want to disable them
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const recRules = Object.keys(recConfig.rules).filter(ruleId => ConfigOps.isErrorSeverity(recConfig.rules[ruleId]));
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// Find and disable rules which had no error-free configuration
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const failingRegistry = registry.getFailingRulesRegistry();
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Object.keys(failingRegistry.rules).forEach(ruleId => {
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// If the rule is recommended, set it to error, otherwise disable it
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disabledConfigs[ruleId] = (recRules.indexOf(ruleId) !== -1) ? 2 : 0;
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});
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// Now that we know which rules to disable, strip out configs with errors
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registry = registry.stripFailingConfigs();
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/*
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* If there is only one config that results in no errors for a rule, we should use it.
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* createConfig will only add rules that have one configuration in the registry.
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*/
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const singleConfigs = registry.createConfig().rules;
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/*
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* The "sweet spot" for number of options in a config seems to be two (severity plus one option).
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* Very often, a third option (usually an object) is available to address
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* edge cases, exceptions, or unique situations. We will prefer to use a config with
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* specificity of two.
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*/
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const specTwoConfigs = registry.filterBySpecificity(2).createConfig().rules;
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// Maybe a specific combination using all three options works
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const specThreeConfigs = registry.filterBySpecificity(3).createConfig().rules;
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// If all else fails, try to use the default (severity only)
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const defaultConfigs = registry.filterBySpecificity(1).createConfig().rules;
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// Combine configs in reverse priority order (later take precedence)
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newConfig.rules = Object.assign({}, disabledConfigs, defaultConfigs, specThreeConfigs, specTwoConfigs, singleConfigs);
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// Make sure progress bar has finished (floating point rounding)
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bar.update(BAR_TOTAL);
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// Log out some stats to let the user know what happened
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const finalRuleIds = Object.keys(newConfig.rules);
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const totalRules = finalRuleIds.length;
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const enabledRules = finalRuleIds.filter(ruleId => (newConfig.rules[ruleId] !== 0)).length;
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const resultMessage = [
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`\nEnabled ${enabledRules} out of ${totalRules}`,
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`rules based on ${fileQty}`,
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`file${(fileQty === 1) ? "." : "s."}`
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].join(" ");
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log.info(resultMessage);
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ConfigOps.normalizeToStrings(newConfig);
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return newConfig;
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}
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/**
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* process user's answers and create config object
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* @param {Object} answers answers received from inquirer
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* @returns {Object} config object
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*/
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function processAnswers(answers) {
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let config = {
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rules: {},
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env: {},
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parserOptions: {},
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extends: []
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};
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// set the latest ECMAScript version
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config.parserOptions.ecmaVersion = DEFAULT_ECMA_VERSION;
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config.env.es6 = true;
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config.globals = {
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Atomics: "readonly",
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SharedArrayBuffer: "readonly"
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};
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// set the module type
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if (answers.moduleType === "esm") {
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config.parserOptions.sourceType = "module";
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} else if (answers.moduleType === "commonjs") {
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config.env.commonjs = true;
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}
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// add in browser and node environments if necessary
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answers.env.forEach(env => {
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config.env[env] = true;
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});
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// add in library information
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if (answers.framework === "react") {
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config.parserOptions.ecmaFeatures = {
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jsx: true
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};
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config.plugins = ["react"];
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config.extends.push("plugin:react/recommended");
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} else if (answers.framework === "vue") {
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config.plugins = ["vue"];
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config.extends.push("plugin:vue/essential");
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}
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if (answers.typescript) {
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if (answers.framework === "vue") {
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config.parserOptions.parser = "@typescript-eslint/parser";
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} else {
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config.parser = "@typescript-eslint/parser";
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}
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if (Array.isArray(config.plugins)) {
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config.plugins.push("@typescript-eslint");
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} else {
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config.plugins = ["@typescript-eslint"];
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}
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}
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// setup rules based on problems/style enforcement preferences
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if (answers.purpose === "problems") {
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config.extends.unshift("eslint:recommended");
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} else if (answers.purpose === "style") {
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if (answers.source === "prompt") {
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config.extends.unshift("eslint:recommended");
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config.rules.indent = ["error", answers.indent];
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config.rules.quotes = ["error", answers.quotes];
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config.rules["linebreak-style"] = ["error", answers.linebreak];
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config.rules.semi = ["error", answers.semi ? "always" : "never"];
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} else if (answers.source === "auto") {
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config = configureRules(answers, config);
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config = autoconfig.extendFromRecommended(config);
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}
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}
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if (answers.typescript && config.extends.includes("eslint:recommended")) {
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config.extends.push("plugin:@typescript-eslint/eslint-recommended");
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}
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// normalize extends
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if (config.extends.length === 0) {
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delete config.extends;
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} else if (config.extends.length === 1) {
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config.extends = config.extends[0];
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}
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ConfigOps.normalizeToStrings(config);
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return config;
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}
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/**
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* Get the version of the local ESLint.
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* @returns {string|null} The version. If the local ESLint was not found, returns null.
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*/
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function getLocalESLintVersion() {
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try {
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const eslintPath = ModuleResolver.resolve("eslint", path.join(process.cwd(), "__placeholder__.js"));
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const eslint = require(eslintPath);
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return eslint.linter.version || null;
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} catch (_err) {
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return null;
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}
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}
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/**
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* Get the shareable config name of the chosen style guide.
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* @param {Object} answers The answers object.
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* @returns {string} The shareable config name.
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*/
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function getStyleGuideName(answers) {
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if (answers.styleguide === "airbnb" && answers.framework !== "react") {
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return "airbnb-base";
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}
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return answers.styleguide;
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}
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/**
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* Check whether the local ESLint version conflicts with the required version of the chosen shareable config.
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* @param {Object} answers The answers object.
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* @returns {boolean} `true` if the local ESLint is found then it conflicts with the required version of the chosen shareable config.
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*/
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function hasESLintVersionConflict(answers) {
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// Get the local ESLint version.
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const localESLintVersion = getLocalESLintVersion();
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if (!localESLintVersion) {
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return false;
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}
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// Get the required range of ESLint version.
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const configName = getStyleGuideName(answers);
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const moduleName = `eslint-config-${configName}@latest`;
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const peerDependencies = getPeerDependencies(moduleName) || {};
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const requiredESLintVersionRange = peerDependencies.eslint;
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if (!requiredESLintVersionRange) {
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return false;
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}
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answers.localESLintVersion = localESLintVersion;
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answers.requiredESLintVersionRange = requiredESLintVersionRange;
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// Check the version.
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if (semver.satisfies(localESLintVersion, requiredESLintVersionRange)) {
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answers.installESLint = false;
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return false;
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}
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return true;
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}
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/**
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* Install modules.
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* @param {string[]} modules Modules to be installed.
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* @returns {void}
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*/
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function installModules(modules) {
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log.info(`Installing ${modules.join(", ")}`);
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npmUtils.installSyncSaveDev(modules);
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}
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/* istanbul ignore next: no need to test inquirer */
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/**
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* Ask user to install modules.
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* @param {string[]} modules Array of modules to be installed.
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* @param {boolean} packageJsonExists Indicates if package.json is existed.
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* @returns {Promise} Answer that indicates if user wants to install.
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*/
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function askInstallModules(modules, packageJsonExists) {
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// If no modules, do nothing.
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if (modules.length === 0) {
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return Promise.resolve();
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}
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log.info("The config that you've selected requires the following dependencies:\n");
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log.info(modules.join(" "));
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return inquirer.prompt([
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{
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type: "confirm",
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name: "executeInstallation",
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message: "Would you like to install them now with npm?",
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default: true,
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when() {
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return modules.length && packageJsonExists;
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}
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}
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]).then(({ executeInstallation }) => {
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if (executeInstallation) {
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installModules(modules);
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}
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});
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}
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/* istanbul ignore next: no need to test inquirer */
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/**
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* Ask use a few questions on command prompt
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* @returns {Promise} The promise with the result of the prompt
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*/
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function promptUser() {
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return inquirer.prompt([
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{
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type: "list",
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name: "purpose",
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message: "How would you like to use ESLint?",
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default: "problems",
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choices: [
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{ name: "To check syntax only", value: "syntax" },
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{ name: "To check syntax and find problems", value: "problems" },
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{ name: "To check syntax, find problems, and enforce code style", value: "style" }
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]
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},
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{
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type: "list",
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name: "moduleType",
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message: "What type of modules does your project use?",
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default: "esm",
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choices: [
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{ name: "JavaScript modules (import/export)", value: "esm" },
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{ name: "CommonJS (require/exports)", value: "commonjs" },
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{ name: "None of these", value: "none" }
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]
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},
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{
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type: "list",
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name: "framework",
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message: "Which framework does your project use?",
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default: "react",
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choices: [
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{ name: "React", value: "react" },
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{ name: "Vue.js", value: "vue" },
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{ name: "None of these", value: "none" }
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]
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},
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{
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type: "confirm",
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name: "typescript",
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message: "Does your project use TypeScript?",
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default: false
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},
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{
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type: "checkbox",
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name: "env",
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message: "Where does your code run?",
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default: ["browser"],
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choices: [
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{ name: "Browser", value: "browser" },
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{ name: "Node", value: "node" }
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]
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},
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{
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type: "list",
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name: "source",
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message: "How would you like to define a style for your project?",
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default: "guide",
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choices: [
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{ name: "Use a popular style guide", value: "guide" },
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{ name: "Answer questions about your style", value: "prompt" },
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{ name: "Inspect your JavaScript file(s)", value: "auto" }
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],
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when(answers) {
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return answers.purpose === "style";
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}
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},
|
|
{
|
|
type: "list",
|
|
name: "styleguide",
|
|
message: "Which style guide do you want to follow?",
|
|
choices: [
|
|
{ name: "Airbnb: https://github.com/airbnb/javascript", value: "airbnb" },
|
|
{ name: "Standard: https://github.com/standard/standard", value: "standard" },
|
|
{ name: "Google: https://github.com/google/eslint-config-google", value: "google" }
|
|
],
|
|
when(answers) {
|
|
answers.packageJsonExists = npmUtils.checkPackageJson();
|
|
return answers.source === "guide" && answers.packageJsonExists;
|
|
}
|
|
},
|
|
{
|
|
type: "input",
|
|
name: "patterns",
|
|
message: "Which file(s), path(s), or glob(s) should be examined?",
|
|
when(answers) {
|
|
return (answers.source === "auto");
|
|
},
|
|
validate(input) {
|
|
if (input.trim().length === 0 && input.trim() !== ",") {
|
|
return "You must tell us what code to examine. Try again.";
|
|
}
|
|
return true;
|
|
}
|
|
},
|
|
{
|
|
type: "list",
|
|
name: "format",
|
|
message: "What format do you want your config file to be in?",
|
|
default: "JavaScript",
|
|
choices: ["JavaScript", "YAML", "JSON"]
|
|
},
|
|
{
|
|
type: "confirm",
|
|
name: "installESLint",
|
|
message(answers) {
|
|
const verb = semver.ltr(answers.localESLintVersion, answers.requiredESLintVersionRange)
|
|
? "upgrade"
|
|
: "downgrade";
|
|
|
|
return `The style guide "${answers.styleguide}" requires eslint@${answers.requiredESLintVersionRange}. You are currently using eslint@${answers.localESLintVersion}.\n Do you want to ${verb}?`;
|
|
},
|
|
default: true,
|
|
when(answers) {
|
|
return answers.source === "guide" && answers.packageJsonExists && hasESLintVersionConflict(answers);
|
|
}
|
|
}
|
|
]).then(earlyAnswers => {
|
|
|
|
// early exit if no style guide is necessary
|
|
if (earlyAnswers.purpose !== "style") {
|
|
const config = processAnswers(earlyAnswers);
|
|
const modules = getModulesList(config);
|
|
|
|
return askInstallModules(modules, earlyAnswers.packageJsonExists)
|
|
.then(() => writeFile(config, earlyAnswers.format));
|
|
}
|
|
|
|
// early exit if you are using a style guide
|
|
if (earlyAnswers.source === "guide") {
|
|
if (!earlyAnswers.packageJsonExists) {
|
|
log.info("A package.json is necessary to install plugins such as style guides. Run `npm init` to create a package.json file and try again.");
|
|
return void 0;
|
|
}
|
|
if (earlyAnswers.installESLint === false && !semver.satisfies(earlyAnswers.localESLintVersion, earlyAnswers.requiredESLintVersionRange)) {
|
|
log.info(`Note: it might not work since ESLint's version is mismatched with the ${earlyAnswers.styleguide} config.`);
|
|
}
|
|
if (earlyAnswers.styleguide === "airbnb" && earlyAnswers.framework !== "react") {
|
|
earlyAnswers.styleguide = "airbnb-base";
|
|
}
|
|
|
|
const config = processAnswers(earlyAnswers);
|
|
|
|
if (Array.isArray(config.extends)) {
|
|
config.extends.push(earlyAnswers.styleguide);
|
|
} else if (config.extends) {
|
|
config.extends = [config.extends, earlyAnswers.styleguide];
|
|
} else {
|
|
config.extends = [earlyAnswers.styleguide];
|
|
}
|
|
|
|
const modules = getModulesList(config);
|
|
|
|
return askInstallModules(modules, earlyAnswers.packageJsonExists)
|
|
.then(() => writeFile(config, earlyAnswers.format));
|
|
|
|
}
|
|
|
|
if (earlyAnswers.source === "auto") {
|
|
const combinedAnswers = Object.assign({}, earlyAnswers);
|
|
const config = processAnswers(combinedAnswers);
|
|
const modules = getModulesList(config);
|
|
|
|
return askInstallModules(modules).then(() => writeFile(config, earlyAnswers.format));
|
|
}
|
|
|
|
// continue with the style questions otherwise...
|
|
return inquirer.prompt([
|
|
{
|
|
type: "list",
|
|
name: "indent",
|
|
message: "What style of indentation do you use?",
|
|
default: "tab",
|
|
choices: [{ name: "Tabs", value: "tab" }, { name: "Spaces", value: 4 }]
|
|
},
|
|
{
|
|
type: "list",
|
|
name: "quotes",
|
|
message: "What quotes do you use for strings?",
|
|
default: "double",
|
|
choices: [{ name: "Double", value: "double" }, { name: "Single", value: "single" }]
|
|
},
|
|
{
|
|
type: "list",
|
|
name: "linebreak",
|
|
message: "What line endings do you use?",
|
|
default: "unix",
|
|
choices: [{ name: "Unix", value: "unix" }, { name: "Windows", value: "windows" }]
|
|
},
|
|
{
|
|
type: "confirm",
|
|
name: "semi",
|
|
message: "Do you require semicolons?",
|
|
default: true
|
|
}
|
|
]).then(answers => {
|
|
const totalAnswers = Object.assign({}, earlyAnswers, answers);
|
|
|
|
const config = processAnswers(totalAnswers);
|
|
const modules = getModulesList(config);
|
|
|
|
return askInstallModules(modules).then(() => writeFile(config, earlyAnswers.format));
|
|
});
|
|
});
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Public Interface
|
|
//------------------------------------------------------------------------------
|
|
|
|
const init = {
|
|
getModulesList,
|
|
hasESLintVersionConflict,
|
|
installModules,
|
|
processAnswers,
|
|
/* istanbul ignore next */initializeConfig() {
|
|
return promptUser();
|
|
}
|
|
};
|
|
|
|
module.exports = init;
|