@eslint/js

Linting JavaScript Code

This code demonstrates how to use @eslint/js to lint JavaScript files in the 'src' directory. It initializes an ESLint instance, lints the files, formats the results using the 'stylish' formatter, and prints the formatted results.

const { ESLint } = require('@eslint/js');

(async function main() {
  const eslint = new ESLint();
  const results = await eslint.lintFiles(['src/**/*.js']);
  const formatter = await eslint.loadFormatter('stylish');
  const resultText = formatter.format(results);
  console.log(resultText);
})();

Custom Configuration

This code shows how to use @eslint/js with a custom configuration. It sets specific rules to enforce no console statements and require semicolons at the end of statements.

const { ESLint } = require('@eslint/js');

(async function main() {
  const eslint = new ESLint({
    overrideConfig: {
      rules: {
        'no-console': 'error',
        'semi': ['error', 'always']
      }
    }
  });
  const results = await eslint.lintFiles(['src/**/*.js']);
  const formatter = await eslint.loadFormatter('stylish');
  const resultText = formatter.format(results);
  console.log(resultText);
})();

Using Plugins

This code demonstrates how to use @eslint/js with the React plugin. It configures ESLint to use rules specific to React, such as ensuring that React variables are used correctly in JSX files.

const { ESLint } = require('@eslint/js');

(async function main() {
  const eslint = new ESLint({
    overrideConfig: {
      plugins: ['react'],
      rules: {
        'react/jsx-uses-react': 'error',
        'react/jsx-uses-vars': 'error'
      }
    }
  });
  const results = await eslint.lintFiles(['src/**/*.jsx']);
  const formatter = await eslint.loadFormatter('stylish');
  const resultText = formatter.format(results);
  console.log(resultText);
})();