jest.preset.js

const nxPreset = require("@nx/jest/preset").default;
module.exports = {
  ...nxPreset,
  testMatch: ["**/+(*.)+(spec|test).+(ts|js)?(x)"],
  transform: {
    "^.+\\.(ts|js|html)$": "ts-jest"
  },
  resolver: "@nx/jest/plugins/resolver",
  moduleFileExtensions: ["ts", "js", "html"],
  coverageReporters: ["html"],
  /* 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 }
};