8 replies

Issue returning ParseError

Hello There … I am just trying to return a

ParseResult

ParseResult

, but it wont compile as I expect. I have this function:

const fromInput: (i: unkown) => : E.Either<ParseResult.ParseError, Foo> => {
  const foo = …

  return pipe(
    ParseResult.succeed(foo),
    E.mapLeft(e => …) // <- ??? e: Foo

  )
}

const fromInput: (i: unkown) => : E.Either<ParseResult.ParseError, Foo> => {
  const foo = …

  return pipe(
    ParseResult.succeed(foo),
    E.mapLeft(e => …) // <- ??? e: Foo

  )
}

So the resulting / inferred error type is

Foo

Foo

. Looking at

ParseResult.succeed

ParseResult.succeed

I find:

export const succeed: <A>(a: A) => Either.Either<ParseIssue, A>

export const succeed: <A>(a: A) => Either.Either<ParseIssue, A>

, so how could that be? What am I doing wrong here??

Effect Community•3y ago•

8 replies

sign error

Issue returning ParseError

Hello There … I am just trying to return a

ParseResult

ParseResult

, but it wont compile as I expect. I have this function:

const fromInput: (i: unkown) => : E.Either<ParseResult.ParseError, Foo> => {
  const foo = …

  return pipe(
    ParseResult.succeed(foo),
    E.mapLeft(e => …) // <- ??? e: Foo

  )
}

const fromInput: (i: unkown) => : E.Either<ParseResult.ParseError, Foo> => {
  const foo = …

  return pipe(
    ParseResult.succeed(foo),
    E.mapLeft(e => …) // <- ??? e: Foo

  )
}

So the resulting / inferred error type is

Foo

Foo

. Looking at

ParseResult.succeed

ParseResult.succeed

I find:

export const succeed: <A>(a: A) => Either.Either<ParseIssue, A>

export const succeed: <A>(a: A) => Either.Either<ParseIssue, A>

, so how could that be? What am I doing wrong here??

Issue returning ParseError

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