442 lines
14 KiB
JavaScript
442 lines
14 KiB
JavaScript
/**
|
|
* @fileoverview Main CLI object.
|
|
* @author Nicholas C. Zakas
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
/*
|
|
* NOTE: The CLI object should *not* call process.exit() directly. It should only return
|
|
* exit codes. This allows other programs to use the CLI object and still control
|
|
* when the program exits.
|
|
*/
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Requirements
|
|
//------------------------------------------------------------------------------
|
|
|
|
const fs = require("fs"),
|
|
path = require("path"),
|
|
{ promisify } = require("util"),
|
|
{ ESLint } = require("./eslint"),
|
|
{ FlatESLint, shouldUseFlatConfig } = require("./eslint/flat-eslint"),
|
|
createCLIOptions = require("./options"),
|
|
log = require("./shared/logging"),
|
|
RuntimeInfo = require("./shared/runtime-info");
|
|
const { Legacy: { naming } } = require("@eslint/eslintrc");
|
|
const { ModuleImporter } = require("@humanwhocodes/module-importer");
|
|
|
|
const debug = require("debug")("eslint:cli");
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Types
|
|
//------------------------------------------------------------------------------
|
|
|
|
/** @typedef {import("./eslint/eslint").ESLintOptions} ESLintOptions */
|
|
/** @typedef {import("./eslint/eslint").LintMessage} LintMessage */
|
|
/** @typedef {import("./eslint/eslint").LintResult} LintResult */
|
|
/** @typedef {import("./options").ParsedCLIOptions} ParsedCLIOptions */
|
|
/** @typedef {import("./shared/types").ResultsMeta} ResultsMeta */
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Helpers
|
|
//------------------------------------------------------------------------------
|
|
|
|
const mkdir = promisify(fs.mkdir);
|
|
const stat = promisify(fs.stat);
|
|
const writeFile = promisify(fs.writeFile);
|
|
|
|
/**
|
|
* Predicate function for whether or not to apply fixes in quiet mode.
|
|
* If a message is a warning, do not apply a fix.
|
|
* @param {LintMessage} message The lint result.
|
|
* @returns {boolean} True if the lint message is an error (and thus should be
|
|
* autofixed), false otherwise.
|
|
*/
|
|
function quietFixPredicate(message) {
|
|
return message.severity === 2;
|
|
}
|
|
|
|
/**
|
|
* Translates the CLI options into the options expected by the ESLint constructor.
|
|
* @param {ParsedCLIOptions} cliOptions The CLI options to translate.
|
|
* @param {"flat"|"eslintrc"} [configType="eslintrc"] The format of the
|
|
* config to generate.
|
|
* @returns {Promise<ESLintOptions>} The options object for the ESLint constructor.
|
|
* @private
|
|
*/
|
|
async function translateOptions({
|
|
cache,
|
|
cacheFile,
|
|
cacheLocation,
|
|
cacheStrategy,
|
|
config,
|
|
configLookup,
|
|
env,
|
|
errorOnUnmatchedPattern,
|
|
eslintrc,
|
|
ext,
|
|
fix,
|
|
fixDryRun,
|
|
fixType,
|
|
global,
|
|
ignore,
|
|
ignorePath,
|
|
ignorePattern,
|
|
inlineConfig,
|
|
parser,
|
|
parserOptions,
|
|
plugin,
|
|
quiet,
|
|
reportUnusedDisableDirectives,
|
|
resolvePluginsRelativeTo,
|
|
rule,
|
|
rulesdir
|
|
}, configType) {
|
|
|
|
let overrideConfig, overrideConfigFile;
|
|
const importer = new ModuleImporter();
|
|
|
|
if (configType === "flat") {
|
|
overrideConfigFile = (typeof config === "string") ? config : !configLookup;
|
|
if (overrideConfigFile === false) {
|
|
overrideConfigFile = void 0;
|
|
}
|
|
|
|
let globals = {};
|
|
|
|
if (global) {
|
|
globals = global.reduce((obj, name) => {
|
|
if (name.endsWith(":true")) {
|
|
obj[name.slice(0, -5)] = "writable";
|
|
} else {
|
|
obj[name] = "readonly";
|
|
}
|
|
return obj;
|
|
}, globals);
|
|
}
|
|
|
|
overrideConfig = [{
|
|
languageOptions: {
|
|
globals,
|
|
parserOptions: parserOptions || {}
|
|
},
|
|
rules: rule ? rule : {}
|
|
}];
|
|
|
|
if (parser) {
|
|
overrideConfig[0].languageOptions.parser = await importer.import(parser);
|
|
}
|
|
|
|
if (plugin) {
|
|
const plugins = {};
|
|
|
|
for (const pluginName of plugin) {
|
|
|
|
const shortName = naming.getShorthandName(pluginName, "eslint-plugin");
|
|
const longName = naming.normalizePackageName(pluginName, "eslint-plugin");
|
|
|
|
plugins[shortName] = await importer.import(longName);
|
|
}
|
|
|
|
overrideConfig[0].plugins = plugins;
|
|
}
|
|
|
|
} else {
|
|
overrideConfigFile = config;
|
|
|
|
overrideConfig = {
|
|
env: env && env.reduce((obj, name) => {
|
|
obj[name] = true;
|
|
return obj;
|
|
}, {}),
|
|
globals: global && global.reduce((obj, name) => {
|
|
if (name.endsWith(":true")) {
|
|
obj[name.slice(0, -5)] = "writable";
|
|
} else {
|
|
obj[name] = "readonly";
|
|
}
|
|
return obj;
|
|
}, {}),
|
|
ignorePatterns: ignorePattern,
|
|
parser,
|
|
parserOptions,
|
|
plugins: plugin,
|
|
rules: rule
|
|
};
|
|
}
|
|
|
|
const options = {
|
|
allowInlineConfig: inlineConfig,
|
|
cache,
|
|
cacheLocation: cacheLocation || cacheFile,
|
|
cacheStrategy,
|
|
errorOnUnmatchedPattern,
|
|
fix: (fix || fixDryRun) && (quiet ? quietFixPredicate : true),
|
|
fixTypes: fixType,
|
|
ignore,
|
|
overrideConfig,
|
|
overrideConfigFile,
|
|
reportUnusedDisableDirectives: reportUnusedDisableDirectives ? "error" : void 0
|
|
};
|
|
|
|
if (configType === "flat") {
|
|
options.ignorePatterns = ignorePattern;
|
|
} else {
|
|
options.resolvePluginsRelativeTo = resolvePluginsRelativeTo;
|
|
options.rulePaths = rulesdir;
|
|
options.useEslintrc = eslintrc;
|
|
options.extensions = ext;
|
|
options.ignorePath = ignorePath;
|
|
}
|
|
|
|
return options;
|
|
}
|
|
|
|
/**
|
|
* Count error messages.
|
|
* @param {LintResult[]} results The lint results.
|
|
* @returns {{errorCount:number;fatalErrorCount:number,warningCount:number}} The number of error messages.
|
|
*/
|
|
function countErrors(results) {
|
|
let errorCount = 0;
|
|
let fatalErrorCount = 0;
|
|
let warningCount = 0;
|
|
|
|
for (const result of results) {
|
|
errorCount += result.errorCount;
|
|
fatalErrorCount += result.fatalErrorCount;
|
|
warningCount += result.warningCount;
|
|
}
|
|
|
|
return { errorCount, fatalErrorCount, warningCount };
|
|
}
|
|
|
|
/**
|
|
* Check if a given file path is a directory or not.
|
|
* @param {string} filePath The path to a file to check.
|
|
* @returns {Promise<boolean>} `true` if the given path is a directory.
|
|
*/
|
|
async function isDirectory(filePath) {
|
|
try {
|
|
return (await stat(filePath)).isDirectory();
|
|
} catch (error) {
|
|
if (error.code === "ENOENT" || error.code === "ENOTDIR") {
|
|
return false;
|
|
}
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Outputs the results of the linting.
|
|
* @param {ESLint} engine The ESLint instance to use.
|
|
* @param {LintResult[]} results The results to print.
|
|
* @param {string} format The name of the formatter to use or the path to the formatter.
|
|
* @param {string} outputFile The path for the output file.
|
|
* @param {ResultsMeta} resultsMeta Warning count and max threshold.
|
|
* @returns {Promise<boolean>} True if the printing succeeds, false if not.
|
|
* @private
|
|
*/
|
|
async function printResults(engine, results, format, outputFile, resultsMeta) {
|
|
let formatter;
|
|
|
|
try {
|
|
formatter = await engine.loadFormatter(format);
|
|
} catch (e) {
|
|
log.error(e.message);
|
|
return false;
|
|
}
|
|
|
|
const output = await formatter.format(results, resultsMeta);
|
|
|
|
if (output) {
|
|
if (outputFile) {
|
|
const filePath = path.resolve(process.cwd(), outputFile);
|
|
|
|
if (await isDirectory(filePath)) {
|
|
log.error("Cannot write to output file path, it is a directory: %s", outputFile);
|
|
return false;
|
|
}
|
|
|
|
try {
|
|
await mkdir(path.dirname(filePath), { recursive: true });
|
|
await writeFile(filePath, output);
|
|
} catch (ex) {
|
|
log.error("There was a problem writing the output file:\n%s", ex);
|
|
return false;
|
|
}
|
|
} else {
|
|
log.info(output);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Public Interface
|
|
//------------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Encapsulates all CLI behavior for eslint. Makes it easier to test as well as
|
|
* for other Node.js programs to effectively run the CLI.
|
|
*/
|
|
const cli = {
|
|
|
|
/**
|
|
* Executes the CLI based on an array of arguments that is passed in.
|
|
* @param {string|Array|Object} args The arguments to process.
|
|
* @param {string} [text] The text to lint (used for TTY).
|
|
* @param {boolean} [allowFlatConfig] Whether or not to allow flat config.
|
|
* @returns {Promise<number>} The exit code for the operation.
|
|
*/
|
|
async execute(args, text, allowFlatConfig) {
|
|
if (Array.isArray(args)) {
|
|
debug("CLI args: %o", args.slice(2));
|
|
}
|
|
|
|
/*
|
|
* Before doing anything, we need to see if we are using a
|
|
* flat config file. If so, then we need to change the way command
|
|
* line args are parsed. This is temporary, and when we fully
|
|
* switch to flat config we can remove this logic.
|
|
*/
|
|
|
|
const usingFlatConfig = allowFlatConfig && await shouldUseFlatConfig();
|
|
|
|
debug("Using flat config?", usingFlatConfig);
|
|
|
|
const CLIOptions = createCLIOptions(usingFlatConfig);
|
|
|
|
/** @type {ParsedCLIOptions} */
|
|
let options;
|
|
|
|
try {
|
|
options = CLIOptions.parse(args);
|
|
} catch (error) {
|
|
debug("Error parsing CLI options:", error.message);
|
|
log.error(error.message);
|
|
return 2;
|
|
}
|
|
|
|
const files = options._;
|
|
const useStdin = typeof text === "string";
|
|
|
|
if (options.help) {
|
|
log.info(CLIOptions.generateHelp());
|
|
return 0;
|
|
}
|
|
if (options.version) {
|
|
log.info(RuntimeInfo.version());
|
|
return 0;
|
|
}
|
|
if (options.envInfo) {
|
|
try {
|
|
log.info(RuntimeInfo.environment());
|
|
return 0;
|
|
} catch (err) {
|
|
debug("Error retrieving environment info");
|
|
log.error(err.message);
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
if (options.printConfig) {
|
|
if (files.length) {
|
|
log.error("The --print-config option must be used with exactly one file name.");
|
|
return 2;
|
|
}
|
|
if (useStdin) {
|
|
log.error("The --print-config option is not available for piped-in code.");
|
|
return 2;
|
|
}
|
|
|
|
const engine = usingFlatConfig
|
|
? new FlatESLint(await translateOptions(options, "flat"))
|
|
: new ESLint(await translateOptions(options));
|
|
const fileConfig =
|
|
await engine.calculateConfigForFile(options.printConfig);
|
|
|
|
log.info(JSON.stringify(fileConfig, null, " "));
|
|
return 0;
|
|
}
|
|
|
|
debug(`Running on ${useStdin ? "text" : "files"}`);
|
|
|
|
if (options.fix && options.fixDryRun) {
|
|
log.error("The --fix option and the --fix-dry-run option cannot be used together.");
|
|
return 2;
|
|
}
|
|
if (useStdin && options.fix) {
|
|
log.error("The --fix option is not available for piped-in code; use --fix-dry-run instead.");
|
|
return 2;
|
|
}
|
|
if (options.fixType && !options.fix && !options.fixDryRun) {
|
|
log.error("The --fix-type option requires either --fix or --fix-dry-run.");
|
|
return 2;
|
|
}
|
|
|
|
const ActiveESLint = usingFlatConfig ? FlatESLint : ESLint;
|
|
|
|
const engine = new ActiveESLint(await translateOptions(options, usingFlatConfig ? "flat" : "eslintrc"));
|
|
let results;
|
|
|
|
if (useStdin) {
|
|
results = await engine.lintText(text, {
|
|
filePath: options.stdinFilename,
|
|
warnIgnored: true
|
|
});
|
|
} else {
|
|
results = await engine.lintFiles(files);
|
|
}
|
|
|
|
if (options.fix) {
|
|
debug("Fix mode enabled - applying fixes");
|
|
await ActiveESLint.outputFixes(results);
|
|
}
|
|
|
|
let resultsToPrint = results;
|
|
|
|
if (options.quiet) {
|
|
debug("Quiet mode enabled - filtering out warnings");
|
|
resultsToPrint = ActiveESLint.getErrorResults(resultsToPrint);
|
|
}
|
|
|
|
const resultCounts = countErrors(results);
|
|
const tooManyWarnings = options.maxWarnings >= 0 && resultCounts.warningCount > options.maxWarnings;
|
|
const resultsMeta = tooManyWarnings
|
|
? {
|
|
maxWarningsExceeded: {
|
|
maxWarnings: options.maxWarnings,
|
|
foundWarnings: resultCounts.warningCount
|
|
}
|
|
}
|
|
: {};
|
|
|
|
if (await printResults(engine, resultsToPrint, options.format, options.outputFile, resultsMeta)) {
|
|
|
|
// Errors and warnings from the original unfiltered results should determine the exit code
|
|
const shouldExitForFatalErrors =
|
|
options.exitOnFatalError && resultCounts.fatalErrorCount > 0;
|
|
|
|
if (!resultCounts.errorCount && tooManyWarnings) {
|
|
log.error(
|
|
"ESLint found too many warnings (maximum: %s).",
|
|
options.maxWarnings
|
|
);
|
|
}
|
|
|
|
if (shouldExitForFatalErrors) {
|
|
return 2;
|
|
}
|
|
|
|
return (resultCounts.errorCount || tooManyWarnings) ? 1 : 0;
|
|
}
|
|
|
|
return 2;
|
|
}
|
|
};
|
|
|
|
module.exports = cli;
|