helpyourneighbour/backend/jest.config.js

export default {
  testEnvironment: 'node',
  transform: {
    '^.+\\.js$': 'babel-jest'
  },
  testMatch: [
    '**/tests/**/*.test.js',
    '**/__tests__/**/*.js'
  ],
  moduleNameMapper: {
    '^src/(.*)$': '<rootDir>/src/$1',
    '^backend/(.*)$': '<rootDir>/$1'
  }
};