whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String? phone,
    2. String? countryCode,
    3. FxPhoneAuthStep step,
    4. OtpData? otpData,
    5. PhoneLookupResult? lookupResult,
    )?
)

A variant of when that fallback to returning null

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( String? phone,  String? countryCode,  FxPhoneAuthStep step,  OtpData? otpData,  PhoneLookupResult? lookupResult)?  $default,) {final _that = this;
switch (_that) {
case _PhoneAuthFlowState() when $default != null:
return $default(_that.phone,_that.countryCode,_that.step,_that.otpData,_that.lookupResult);case _:
  return null;

}
}