parsergen-starter/jest.config.cjs

A complete parser generator starter with PEG.js, optional Moo lexer, and VS Code integration

const { pathsToModuleNameMapper } = require('ts-jest');
const { compilerOptions } = require('./tsconfig');

module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'node',
  testMatch: ['**/tests/**/*.test.ts'],
  moduleFileExtensions: ['ts', 'js', 'json', 'node'],
  moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, {
    prefix: '<rootDir>/',
  }),
  // Force Jest to transform ES modules
  transformIgnorePatterns: [
    'node_modules/(?!(chalk|ansi-styles|supports-color|has-flag|color-convert|color-name)/)'
  ],
  // Transform everything, including node_modules
  transform: {
    '^.+\\.(ts|tsx)$': 'ts-jest',
    '^.+\\.(js|jsx)$': 'babel-jest'
  }
};