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No IOE.fromIOOption() #1836

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QimatLuo opened this issue Feb 23, 2023 · 0 comments
Open

No IOE.fromIOOption() #1836

QimatLuo opened this issue Feb 23, 2023 · 0 comments

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@QimatLuo
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馃殌 Feature request

Current Behavior

No this function.

Desired Behavior

export declare const fromIOOption: <E>(onNone: Lazy<E>) => <A>(fa: Option<A>) => IOEither<E, A>

Suggested Solution

Add this function for sugar.

Who does this impact? Who is this for?

People who want to do IOO -> IOE to give an error message if it's O.none.

Describe alternatives you've considered

flow(
  getParamNonEmpty,
  IO.map(E.fromOption(() => 'error message when env no value'))
)

Additional context

fp-ts-std: getParamNonEmpty

Your environment

Software Version(s)
fp-ts 2.13.1
TypeScript 4.9.5
@gcanti gcanti added this to the 2.14 milestone Feb 23, 2023
@gcanti gcanti modified the milestones: 2.14, 2.15 Apr 21, 2023
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2 participants
@gcanti @QimatLuo