jest.config.js

const Fs = require('fs');
const Path = require('path');
const pkg = require('./package.json');

const workspaces = [];
const packages = Array.isArray(pkg.workspaces) ? pkg.workspaces : pkg.workspaces.packages ?? [];
for (const packageGlob of packages) {
  if (packageGlob.startsWith('../')) continue;

  let workspacePath = packageGlob;
  // if we're not in build already, need to add build
  if (!__dirname.includes('build') && !workspacePath.includes('build')) {
    workspacePath = `build/${workspacePath}`;
  }
  if (workspacePath.endsWith('/*')) {
    workspacePath = workspacePath.replace('/*', '');
    for (const subdir of Fs.readdirSync(Path.resolve(__dirname, workspacePath))) {
      if (subdir === 'node_modules') continue;
      if (!Fs.statSync(Path.resolve(__dirname, workspacePath, subdir)).isDirectory()) continue;
      if (!Fs.existsSync(Path.resolve(__dirname, workspacePath, subdir, 'package.json'))) continue;
      workspaces.push(`${workspacePath}/${subdir}`);
    }
  } else {
    workspaces.push(workspacePath);
  }
}

module.exports = {
  verbose: false,
  testMatch: ['**/test/*.test.js'],
  testEnvironment: 'node',
  collectCoverage: false,
  transform: {},
  collectCoverageFrom: workspaces.map(x => `${x}/**/*.js`),
  coverageReporters: ['text-summary', 'json'],
  coveragePathIgnorePatterns: [
    'node_modules',
    '<rootDir>/testing/*',
    '<rootDir>/.*/interfaces/*',
    '<rootDir>/.*/interfaces/*.[ts|js]',
    '<rootDir>/.*/bin/*.[ts|js]',
    '<rootDir>/.*/start.[ts|js]',
    '<rootDir>/.*/install.[ts|js]',
    '<rootDir>/.*/install/*.[ts|js]',
    '<rootDir>/.*/server.[ts|js]',
    '<rootDir>/.*/test/.*.js',
    '<rootDir>/.*.d.ts',
    '<rootDir>/.*.json',
  ],
  globalTeardown: './jest.teardown.js',
  globalSetup: './jest.setup.js',
  setupFilesAfterEnv: ['./jest.setupPerTest.js'],
  testTimeout: 15e3,
  reporters: ['default', ['github-actions', { silent: false }], 'summary'],
  roots: workspaces.map(x => `${x}/`),
  moduleDirectories: ['node_modules', ...workspaces.map(x => `${x}/node_modules`)],
};