@lipemat/js-boilerplate/scripts/lint.js

Dependencies and scripts for a no config JavaScript app

import { ESLint } from 'eslint';
import minimist from 'minimist';
import chalk from 'chalk';
import { getPackageConfig } from '@lipemat/js-boilerplate-shared/helpers/package-config.js';
// Command line arguments.
const flags = minimist(process.argv.slice(2));
/**
 * ESLint does not have a utility method for detecting if
 * any error has occurred, nor does it set the exit code.
 *
 * We can use this function to determine if any error has
 * occurred and set the exit code accordingly.
 */
function errorOccurred(results) {
    return results.some(result => result.errorCount > 0 || result.warningCount > 0);
}
/**
 * Use the public API to run the eslint commands.
 *
 * @link https://eslint.org/docs/developer-guide/nodejs-api
 */
(async function main() {
    // 1. Create an instance with the `fix` and `cache` options.
    const eslint = new ESLint({
        fix: (flags.fix ?? true) !== 'false',
        cache: true,
        cacheStrategy: 'content',
    });
    console.debug(chalk.underline('Running "js-boilerplate:lint" (eslint) task'));
    // 2. Lint files. This doesn't modify target files.
    const results = await eslint.lintFiles([
        getPackageConfig().workingDirectory + '/src/**/*.{js,jsx,ts,tsx,svelte}',
    ]);
    // 3. Modify the files with the fixed code.
    await ESLint.outputFixes(results);
    // 4. Format the results.
    const formatter = await eslint.loadFormatter('stylish');
    const resultText = formatter.format(results);
    // 5. Output it.
    if ('' === resultText) {
        console.debug(`>> Linted ${results.length} files without errors`);
    }
    else {
        console.debug(resultText);
        if (errorOccurred(results)) {
            process.exitCode = 1;
        }
    }
    console.debug('');
}()).catch(error => {
    process.exitCode = 1;
    console.error(error);
});
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