Method clearMocksOnScope

packages/jest-mock/src/index.ts:1404–1423

* Walks the own keys of `scope` and calls `.mockClear()` on each value that * is a Jest mock function. Used by `resetModules` to clear mocks that user * code installed directly on the test environment's global object (where * the mock-fn registry doesn't see them).

(scope: object)

   * the mock-fn registry doesn't see them).
   */
  clearMocksOnScope(scope: object): void {
    for (const key of Object.keys(scope)) {
      const value = (scope as Record<string, unknown>)[key];
      // Gate on `'_isMockFunction' in value` first: that uses the `has` trap
      // and won't fire a throwing getter (e.g. a user Proxy on `globalThis`).
      // `isMockFunction` reads `._isMockFunction` directly, so we only call
      // it once we know the property exists. The extra `typeof mockClear`
      // guard rejects forged values that set the marker but aren't real Jest
      // mocks.
      if (
        value != null &&
        (typeof value === 'object' || typeof value === 'function') &&
        '_isMockFunction' in value &&
        this.isMockFunction(value) &&
        typeof (value as Mock).mockClear === 'function'
      ) {
        (value as Mock).mockClear();
      }
    }
  }

  resetAllMocks(): void {
    this._mockConfigRegistry = new WeakMap();