3.5.3-beta.1

v3.5.3-beta.1

fixes type issue where `Result.Error<E>` and `Result.Ok<V>` is not in…

3.5.2

Fixes

• See #22 - Result.try and Result.fromAsyncCatching now catch exceptions that are thrown inside the transform-error callbacks.

Thanks @PeterD1524 !

3.5.1

Fixes

• See #19 - Fixes issue where TS had trouble inferring the Result value when the shape of a value has some structural overlap with a Result type (e.g. { value: string }.

3.5.0

Minor changes:

• Adds match() to Result, introducing basic pattern matching to the lib. See docs for more info about this feature.

   declare const result: Result<number, ErrorA | ErrorB>;
   
   if (!result.ok) {
     result
       .match()
       .when(ErrorA, () => /* handle error a */)
       .when(ErrorB, () => /* handle error b */)
       .run()
   }

• Adds ok property on Result as the main way to check whether a result is a success or failure. See updated docs. This makes error handling a bit simpler, and allows us to more easily use a result with a pattern-matching lib like ts-pattern. As a result, isOk() and isError() are marked for deprecation.

  declare const result: Result<number, ErrorA | ErrorB>;
  
  // before
  if (result.isError()) {
    result.error; // ErrorA | ErrorB
  } else {
    result.value; // number
  }
  
  // after
  if (!result.ok) {
    result.error; // ErrorA | ErrorB
  } else {
    result.value; // number
  }

• Strings passed to Result.error are now constant:

  // before
  const result = Result.error("some-error"); // Result.Error<string>
  
  // after
  const result = Result.error("some-error"); // Result.Error<"some-error">;

3.5.0-beta.1

v3.5.0-beta.1

adds `match` functionality, simpler narrowing using `ok` (deprecating…

3.4.1

Fixes:

• See #18 - Due to an @internal annotation, the generator syntax (yield*, etc) wasn't working correctly. Removing the annotations on [Symbol.iterator]() solved the issue.

3.4.0

Minor Changes

• See #16: we better narrow Result.Ok / Result.Error when using Result.isOk() and Result.isError().

Fixes

• See #17: we now ignore any mapped values when a result can only be a failure, and likewise ignore the returned value when recovering from results that can only be successful.

3.4.0-beta.2

v3.4.0-beta.2

separates result creation into own factory class

3.3.0

Minor changes

• adds optional transformErrorFn callback to Result.wrap
• adds initial support for generator functions to create and work with results

3.3.0-beta.2

v3.3.0-beta.2

adds overload to Result.gen and Result.genCatching for passing the th…