wallaby.js

module.exports = (wallaby) => ({
  files: [
    'src/**/*.js?(x)',
    'src/**/*.ts?(x)',
    'src/**/*.html',
    'tests/**/*.snap',
    { pattern: 'tests/**/*-spec.ts?(x)', ignore: true },
    { pattern: 'tests/**/!(*-spec)', instrument: false, load: true },
    { pattern: 'package.json', instrument: false, load: true },
  ],

  tests: ['tests/**/*-spec.ts?(x)'],

  env: {
    type: 'node',
    runner: 'node',
    params: { env: 'wallaby=true' },
  },

  testFramework: 'jest',

  preprocessors: {
    '**/*.js?(x)': (file) =>
      require('@babel/core').transform(file.content, {
        sourceMap: true,
        filename: file.path,
        presets: [require('babel-preset-jest')],
      }),
  },

  workers: {
    initial: 2,
    regular: 1,
  },

  setup: (w) => {
    const path = require('path');

    const jestConfig = {
      resetMocks: true,
      resetModules: true,
      moduleFileExtensions: ['js', 'jsx', 'json', 'ts', 'tsx'],
      moduleNameMapper: {
        '.*releases.json$': path.join(
          wallaby.localProjectDir,
          'static/releases.json',
        ),
      },
      setupTestFrameworkScriptFile: path.join(
        wallaby.projectCacheDir,
        'tests/setup.js',
      ),
      globals: { __JEST_DEV__: true },
    };

    w.testFramework.configure(jestConfig);
  },
});