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Function: isErrResult() ​

isErrResult(value): value is Err<any>

Defined in: index.ts:351

Type guard that checks if an unknown value is an Err result. Unlike isErr, this accepts any unknown value and checks if it's a valid Err result.

Parameters ​

value ​

unknown

The value to check

Returns ​

value is Err<any>

True if the value is an Err result, false otherwise

Example ​

typescript
if (isErrResult(value)) {
  // value is now typed as Err
  console.log(value.error);
}