@soleil-se/eslint-config/setup.js

ESLint configuration for Sitevision apps and projects.

/* eslint-disable no-console */
import fs from 'node:fs';
import { execSync } from 'node:child_process';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);
const { name, version } = require('./package.json');

const dependencies = {
  [name]: `^${version}`,
  eslint: '^9.18.0',
};

const eslintConfigFileContent = `import config from '${name}';

export default [
  ...config,
];
`;

const prettierConfigFileContent = `export { default } from '${name}/prettier';
`;

function readJsonFileSync(file) {
  try {
    return JSON.parse(fs.readFileSync(file, 'utf-8'));
  } catch {
    console.error(`Error reading JSON file: ${file}`);
    return {};
  }
}

function writeJsonFileSync(file, content) {
  try {
    return fs.writeFileSync(file, JSON.stringify(content, null, 2));
  } catch (error) {
    console.error(`Error writing to JSON file: ${file}`, error);
    return {};
  }
}

async function printStartup() {
  console.log(`\nSetting up ESLint + Prettier dependencies and configuration for ${name}@${version}.`);
}

function removeDependencies(packageFile) {
  const oldDependencies = [
    'eslint-config-airbnb-base',
    'eslint-plugin-import',
    'eslint-plugin-svelte',
    'eslint-config-prettier',
    'eslint-plugin-prettier',
    'eslint-plugin-svelte3',
  ];
  console.log('\nRemoving old dependecies...');
  const devDependencies = { ...packageFile.devDependencies };
  oldDependencies.forEach((dependency) => delete devDependencies[dependency]);
  return { ...packageFile, devDependencies };
}

function installDependencies() {
  const packageManager = fs.existsSync('pnpm-lock.yaml') ? 'pnpm' : 'npm';
  const dependencyVersions = Object
    .entries(dependencies)
    .map((dependency) => `${dependency[0]}@${dependency[1]}`)
    .join(' ');
  const command = `${packageManager} i ${dependencyVersions} --save-dev`;
  console.log(`\nInstalling dependecies...\n> ${command}`);
  execSync(command, { cwd: '.', env: process.env, stdio: 'inherit' });
}

function removeOldConfigFiles() {
  ['.eslintrc.js', '.eslintrc.cjs', '.eslintignore', '.prettierrc.js', '.prettierrc.cjs'].forEach((file) => {
    if (fs.existsSync(file)) fs.unlinkSync(file);
  });
}

function renameToCjsIfNeeded() {
  ['.stylelintrc.js', 'svelte.config.js'].forEach((file) => {
    if (fs.existsSync(file)) {
      const content = fs.readFileSync(file, 'utf-8');
      if (content.includes('module.exports')) {
        fs.renameSync(file, file.replace('.js', '.cjs'));
      }
    }
  });
}

function setupFiles() {
  console.log('\nSetting up configuration files...');
  removeOldConfigFiles();
  renameToCjsIfNeeded();
  fs.writeFileSync('./eslint.config.js', eslintConfigFileContent);
  fs.writeFileSync('./prettier.config.js', prettierConfigFileContent);
}

function setup() {
  printStartup();
  let packageFile = readJsonFileSync('./package.json');
  packageFile = removeDependencies(packageFile);

  if (packageFile.type !== 'module') {
    packageFile.type = 'module';
  }

  writeJsonFileSync('./package.json', packageFile);
  installDependencies();
  setupFiles();
  console.log('\nESLint + Prettier setup complete!');
}

setup();