jest.preset.js

const nxPreset = require('@nx/jest/preset').default

module.exports = {
  ...nxPreset,
  /* TODO: Update to latest Jest snapshotFormat
   * By default Nx has kept the older style of Jest Snapshot formats
   * to prevent breaking of any existing tests with snapshots.
   * It's recommend you update to the latest format.
   * You can do this by removing snapshotFormat property
   * and running tests with --update-snapshot flag.
   * Example: "nx affected --targets=test --update-snapshot"
   * More info: https://jestjs.io/docs/upgrading-to-jest29#snapshot-format
   */
  snapshotFormat: { escapeString: true, printBasicPrototype: true },
  passWithNoTests: true,
  moduleNameMapper: {
    ...(nxPreset.moduleNameMapper || {}),
    // Force all React/ReactDOM imports to use the same version
    // This prevents conflicts when packages like @visx/xychart bundle their own React
    // Use path relative to workspace root (../../node_modules from project root)
    '^react$': '<rootDir>/../../node_modules/react',
    '^react-dom$': '<rootDir>/../../node_modules/react-dom',
  },
}