Method constructor

packages/forms/src/model/form_control.ts:469–497

(
    // formState and defaultValue will only be null if T is nullable
    formState: FormControlState<TValue> | TValue = null as unknown as TValue,
    validatorOrOpts?: ValidatorFn | ValidatorFn[] | FormControlOptions | null,
    asyncValidator?: AsyncValidatorFn | AsyncValidatorFn[] | null,
  )

  _pendingChange: boolean = false;

  constructor(
    // formState and defaultValue will only be null if T is nullable
    formState: FormControlState<TValue> | TValue = null as unknown as TValue,
    validatorOrOpts?: ValidatorFn | ValidatorFn[] | FormControlOptions | null,
    asyncValidator?: AsyncValidatorFn | AsyncValidatorFn[] | null,
  ) {
    super(pickValidators(validatorOrOpts), pickAsyncValidators(asyncValidator, validatorOrOpts));
    this._applyFormState(formState);
    this._setUpdateStrategy(validatorOrOpts);
    this._initObservables();
    this.updateValueAndValidity({
      onlySelf: true,
      // If `asyncValidator` is present, it will trigger control status change from `PENDING` to
      // `VALID` or `INVALID`.
      // The status should be broadcasted via the `statusChanges` observable, so we set
      // `emitEvent` to `true` to allow that during the control creation process.
      emitEvent: !!this.asyncValidator,
    });
    if (
      isOptionsObj(validatorOrOpts) &&
      (validatorOrOpts.nonNullable || validatorOrOpts.initialValueIsDefault)
    ) {
      if (isFormControlState(formState)) {
        this.defaultValue = formState.value;
      } else {
        this.defaultValue = formState;
      }
    }
  }

  override setValue(
    value: TValue,