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304
node_modules/next/dist/esm/lib/eslint/runLintCheck.js
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304
node_modules/next/dist/esm/lib/eslint/runLintCheck.js
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import { promises as fs, existsSync } from 'fs';
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import { bold, cyan, red, underline, yellow } from '../picocolors';
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import path from 'path';
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import findUp from 'next/dist/compiled/find-up';
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import semver from 'next/dist/compiled/semver';
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import * as CommentJson from 'next/dist/compiled/comment-json';
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import { formatResults } from './customFormatter';
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import { writeDefaultConfig } from './writeDefaultConfig';
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import { hasEslintConfiguration } from './hasEslintConfiguration';
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import { writeOutputFile } from './writeOutputFile';
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import { findPagesDir } from '../find-pages-dir';
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import { installDependencies } from '../install-dependencies';
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import { hasNecessaryDependencies } from '../has-necessary-dependencies';
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import * as Log from '../../build/output/log';
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import isError, { getProperError } from '../is-error';
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import { getPkgManager } from '../helpers/get-pkg-manager';
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import { getESLintStrictValue, getESLintPromptValues } from './getESLintPromptValues';
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// 0 is off, 1 is warn, 2 is error. See https://eslint.org/docs/user-guide/configuring/rules#configuring-rules
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const VALID_SEVERITY = [
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'off',
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'warn',
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'error'
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];
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function isValidSeverity(severity) {
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return VALID_SEVERITY.includes(severity);
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}
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const requiredPackages = [
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{
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file: 'eslint',
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pkg: 'eslint',
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exportsRestrict: false
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},
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{
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file: 'eslint-config-next',
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pkg: 'eslint-config-next',
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exportsRestrict: false
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}
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];
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async function cliPrompt(cwd) {
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console.log(bold(`${cyan('?')} How would you like to configure ESLint? https://nextjs.org/docs/app/api-reference/config/eslint`));
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try {
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const cliSelect = (await Promise.resolve(require('next/dist/compiled/cli-select'))).default;
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const { value } = await cliSelect({
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values: await getESLintPromptValues(cwd),
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valueRenderer: ({ title, recommended }, selected)=>{
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const name = selected ? bold(underline(cyan(title))) : title;
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return name + (recommended ? bold(yellow(' (recommended)')) : '');
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},
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selected: cyan('❯ '),
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unselected: ' '
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});
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return {
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config: (value == null ? void 0 : value.config) ?? null
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};
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} catch {
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return {
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config: null
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};
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}
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}
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async function lint(baseDir, lintDirs, eslintrcFile, pkgJsonPath, { lintDuringBuild = false, eslintOptions = null, reportErrorsOnly = false, maxWarnings = -1, formatter = null, outputFile = null }) {
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try {
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var _mod_CLIEngine, _ESLint_getErrorResults;
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// Load ESLint after we're sure it exists:
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const deps = await hasNecessaryDependencies(baseDir, requiredPackages);
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const packageManager = getPkgManager(baseDir);
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if (deps.missing.some((dep)=>dep.pkg === 'eslint')) {
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Log.error(`ESLint must be installed${lintDuringBuild ? ' in order to run during builds:' : ':'} ${bold(cyan((packageManager === 'yarn' ? 'yarn add --dev' : packageManager === 'pnpm' ? 'pnpm install --save-dev' : 'npm install --save-dev') + ' eslint'))}`);
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return null;
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}
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const mod = await Promise.resolve(require(deps.resolved.get('eslint')));
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// If V9 config was found, use flat config, or else use legacy.
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const useFlatConfig = eslintrcFile ? path.basename(eslintrcFile).startsWith('eslint.config.') : false;
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let ESLint;
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// loadESLint is >= 8.57.0
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// PR https://github.com/eslint/eslint/pull/18098
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// Release https://github.com/eslint/eslint/releases/tag/v8.57.0
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if ('loadESLint' in mod) {
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// By default, configType is `flat`. If `useFlatConfig` is false, the return value is `LegacyESLint`.
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// https://github.com/eslint/eslint/blob/1def4cdfab1f067c5089df8b36242cdf912b0eb6/lib/types/index.d.ts#L1609-L1613
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ESLint = await mod.loadESLint({
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useFlatConfig
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});
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} else {
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// eslint < 8.57.0, use legacy ESLint
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ESLint = mod.ESLint;
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}
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let eslintVersion = (ESLint == null ? void 0 : ESLint.version) ?? ((_mod_CLIEngine = mod.CLIEngine) == null ? void 0 : _mod_CLIEngine.version);
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if (!eslintVersion || semver.lt(eslintVersion, '7.0.0')) {
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return `${red('error')} - Your project has an older version of ESLint installed${eslintVersion ? ' (' + eslintVersion + ')' : ''}. Please upgrade to ESLint version 7 or above`;
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}
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let options = {
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useEslintrc: true,
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baseConfig: {},
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errorOnUnmatchedPattern: false,
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extensions: [
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'.js',
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'.jsx',
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'.ts',
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'.tsx'
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],
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cache: true,
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...eslintOptions
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};
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if (semver.gte(eslintVersion, '9.0.0') && useFlatConfig) {
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for (const option of [
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'useEslintrc',
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'extensions',
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'ignorePath',
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'reportUnusedDisableDirectives',
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'resolvePluginsRelativeTo',
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'rulePaths',
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'inlineConfig',
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'maxWarnings'
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]){
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if (option in options) {
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delete options[option];
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}
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}
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}
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let eslint = new ESLint(options);
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let nextEslintPluginIsEnabled = false;
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const nextRulesEnabled = new Map();
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for (const configFile of [
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eslintrcFile,
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pkgJsonPath
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]){
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if (!configFile) continue;
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const completeConfig = await eslint.calculateConfigForFile(configFile);
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if (!completeConfig) continue;
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const plugins = completeConfig.plugins;
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const hasNextPlugin = // in ESLint < 9, `plugins` value is string[]
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Array.isArray(plugins) ? plugins.includes('@next/next') : '@next/next' in plugins;
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if (hasNextPlugin) {
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nextEslintPluginIsEnabled = true;
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for (const [name, [severity]] of Object.entries(completeConfig.rules)){
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if (!name.startsWith('@next/next/')) {
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continue;
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}
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if (typeof severity === 'number' && severity >= 0 && severity < VALID_SEVERITY.length) {
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nextRulesEnabled.set(name, VALID_SEVERITY[severity]);
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} else if (typeof severity === 'string' && isValidSeverity(severity)) {
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nextRulesEnabled.set(name, severity);
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}
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}
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break;
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}
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}
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const pagesDir = findPagesDir(baseDir).pagesDir;
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const pagesDirRules = pagesDir ? [
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'@next/next/no-html-link-for-pages'
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] : [];
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if (nextEslintPluginIsEnabled) {
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let updatedPagesDir = false;
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for (const rule of pagesDirRules){
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var _options_baseConfig_rules, _options_baseConfig_rules1;
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if (!((_options_baseConfig_rules = options.baseConfig.rules) == null ? void 0 : _options_baseConfig_rules[rule]) && !((_options_baseConfig_rules1 = options.baseConfig.rules) == null ? void 0 : _options_baseConfig_rules1[rule.replace('@next/next', '@next/babel-plugin-next')])) {
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if (!options.baseConfig.rules) {
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options.baseConfig.rules = {};
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}
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options.baseConfig.rules[rule] = [
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1,
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pagesDir
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];
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updatedPagesDir = true;
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}
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}
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if (updatedPagesDir) {
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eslint = new ESLint(options);
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}
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} else {
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Log.warn('');
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Log.warn('The Next.js plugin was not detected in your ESLint configuration. See https://nextjs.org/docs/app/api-reference/config/eslint#migrating-existing-config');
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}
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const lintStart = process.hrtime();
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let results = await eslint.lintFiles(lintDirs);
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let selectedFormatter = null;
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if (options.fix) await ESLint.outputFixes(results);
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if (reportErrorsOnly) results = await ESLint.getErrorResults(results) // Only return errors if --quiet flag is used
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;
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if (formatter) selectedFormatter = await eslint.loadFormatter(formatter);
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const formattedResult = await formatResults(baseDir, results, selectedFormatter == null ? void 0 : selectedFormatter.format);
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const lintEnd = process.hrtime(lintStart);
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const totalWarnings = results.reduce((sum, file)=>sum + file.warningCount, 0);
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if (outputFile) await writeOutputFile(outputFile, formattedResult.output);
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return {
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output: formattedResult.outputWithMessages,
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isError: ((_ESLint_getErrorResults = ESLint.getErrorResults(results)) == null ? void 0 : _ESLint_getErrorResults.length) > 0 || maxWarnings >= 0 && totalWarnings > maxWarnings,
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eventInfo: {
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durationInSeconds: lintEnd[0],
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eslintVersion: eslintVersion,
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lintedFilesCount: results.length,
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lintFix: !!options.fix,
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nextEslintPluginVersion: nextEslintPluginIsEnabled && deps.resolved.has('eslint-config-next') ? require(path.join(path.dirname(deps.resolved.get('eslint-config-next')), 'package.json')).version : null,
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nextEslintPluginErrorsCount: formattedResult.totalNextPluginErrorCount,
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nextEslintPluginWarningsCount: formattedResult.totalNextPluginWarningCount,
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nextRulesEnabled: Object.fromEntries(nextRulesEnabled)
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}
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};
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} catch (err) {
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if (lintDuringBuild) {
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Log.error(`ESLint: ${isError(err) && err.message ? err.message.replace(/\n/g, ' ') : err}`);
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return null;
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} else {
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throw getProperError(err);
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}
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}
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}
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export async function runLintCheck(baseDir, lintDirs, opts) {
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const { lintDuringBuild = false, eslintOptions = null, reportErrorsOnly = false, maxWarnings = -1, formatter = null, outputFile = null, strict = false } = opts;
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try {
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// Find user's .eslintrc file
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// See: https://eslint.org/docs/user-guide/configuring/configuration-files#configuration-file-formats
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const eslintrcFile = await findUp([
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// eslint v9
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'eslint.config.js',
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'eslint.config.mjs',
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'eslint.config.cjs',
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// TS extensions require to install a separate package `jiti`.
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// https://eslint.org/docs/latest/use/configure/configuration-files#typescript-configuration-files
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'eslint.config.ts',
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'eslint.config.mts',
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'eslint.config.cts',
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// eslint <= v8
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'.eslintrc.js',
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'.eslintrc.cjs',
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'.eslintrc.yaml',
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'.eslintrc.yml',
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'.eslintrc.json',
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'.eslintrc'
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], {
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cwd: baseDir
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}) ?? null;
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const pkgJsonPath = await findUp('package.json', {
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cwd: baseDir
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}) ?? null;
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let packageJsonConfig = null;
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if (pkgJsonPath) {
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const pkgJsonContent = await fs.readFile(pkgJsonPath, {
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encoding: 'utf8'
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});
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packageJsonConfig = CommentJson.parse(pkgJsonContent);
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}
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const config = await hasEslintConfiguration(eslintrcFile, packageJsonConfig);
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let deps;
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if (config.exists) {
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// Run if ESLint config exists
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return await lint(baseDir, lintDirs, eslintrcFile, pkgJsonPath, {
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lintDuringBuild,
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eslintOptions,
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reportErrorsOnly,
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maxWarnings,
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formatter,
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outputFile
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});
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} else {
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// Display warning if no ESLint configuration is present inside
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// config file during "next build", no warning is shown when
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// no eslintrc file is present
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if (lintDuringBuild) {
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if (config.emptyPkgJsonConfig || config.emptyEslintrc) {
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Log.warn(`No ESLint configuration detected. Run ${bold(cyan('next lint'))} to begin setup`);
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}
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return null;
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} else {
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// Ask user what config they would like to start with for first time "next lint" setup
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const { config: selectedConfig } = strict ? await getESLintStrictValue(baseDir) : await cliPrompt(baseDir);
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if (selectedConfig == null) {
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// Show a warning if no option is selected in prompt
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Log.warn('If you set up ESLint yourself, we recommend adding the Next.js ESLint plugin. See https://nextjs.org/docs/app/api-reference/config/eslint#migrating-existing-config');
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return null;
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} else {
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// Check if necessary deps installed, and install any that are missing
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deps = await hasNecessaryDependencies(baseDir, requiredPackages);
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if (deps.missing.length > 0) {
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deps.missing.forEach((dep)=>{
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if (dep.pkg === 'eslint') {
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// pin to v9 to avoid breaking changes
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dep.pkg = 'eslint@^9';
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}
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});
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await installDependencies(baseDir, deps.missing, true);
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}
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// Write default ESLint config.
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// Check for /pages and src/pages is to make sure this happens in Next.js folder
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if ([
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'app',
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'src/app',
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'pages',
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'src/pages'
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].some((dir)=>existsSync(path.join(baseDir, dir)))) {
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await writeDefaultConfig(baseDir, config, selectedConfig, eslintrcFile, pkgJsonPath, packageJsonConfig);
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}
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}
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Log.ready(`ESLint has successfully been configured. Run ${bold(cyan('next lint'))} again to view warnings and errors.`);
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return null;
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}
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}
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} catch (err) {
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throw err;
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}
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}
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//# sourceMappingURL=runLintCheck.js.map
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