@nuxt/eslint/dist/chunks/checker.mjs

Generate ESLint config from current Nuxt settings

import { useLogger, addVitePlugin, addWebpackPlugin } from '@nuxt/kit';
import { relative } from 'pathe';
import { watch } from 'chokidar';

const logger = useLogger("nuxt:eslint:checker");
const flatConfigFiles = [
  "eslint.config.js",
  "eslint.config.mjs",
  "eslint.config.cjs"
];
async function setupESLintChecker(moduleOptions, nuxt) {
  const options = {
    cache: true,
    include: [`${nuxt.options.srcDir}/**/*.{js,jsx,ts,tsx,vue}`],
    exclude: ["**/node_modules/**", nuxt.options.buildDir],
    lintOnStart: true,
    formatter: "stylish",
    emitWarning: true,
    emitError: true,
    ...typeof moduleOptions.checker === "boolean" ? {} : moduleOptions.checker || {}
  };
  options.configType ||= process.env.ESLINT_USE_FLAT_CONFIG !== "false" ? "flat" : "eslintrc";
  options.eslintPath ||= options.configType === "flat" ? "eslint/use-at-your-own-risk" : "eslint";
  const configPaths = [
    ".eslintignore",
    ".eslintrc",
    ".eslintrc.js",
    ".eslintrc.yaml",
    ".eslintrc.yml",
    ".eslintrc.json",
    ...flatConfigFiles
  ].map((path) => relative(nuxt.options.rootDir, path));
  if (nuxt.options.watch) {
    nuxt.options.watch.push(...configPaths);
  } else {
    const watcher = watch(configPaths, { depth: 0 }).on("change", (path) => {
      logger.info(`Eslint config changed: ${path}`);
      logger.warn("Please restart the Nuxt server to apply changes or upgrade to latest Nuxt for automatic restart.");
    });
    nuxt.hook("close", () => watcher.close());
  }
  if (nuxt.options.builder === "@nuxt/vite-builder") {
    const vitePluginEslint = await import('vite-plugin-eslint2').then((m) => "default" in m ? m.default : m);
    addVitePlugin(() => {
      const viteOptions = {
        lintInWorker: true,
        ...options,
        ...options.vite
      };
      delete viteOptions.configType;
      return vitePluginEslint(viteOptions);
    }, { server: false });
  } else if (nuxt.options.builder === "@nuxt/webpack-builder") {
    const EslintWebpackPlugin = await import('eslint-webpack-plugin').then((m) => "default" in m ? m.default : m);
    addWebpackPlugin(() => {
      const webpackOptions = {
        ...options,
        context: nuxt.options.srcDir,
        files: options.include,
        lintDirtyModulesOnly: !options.lintOnStart
      };
      return new EslintWebpackPlugin(webpackOptions);
    }, { server: false });
  } else {
    logger.warn("Unsupported builder " + nuxt.options.builder + ", ESLint checker is not enabled.");
  }
}

export { setupESLintChecker };