16 replies

Issue with Pipe vs Flow in TypeScript

Can anyone tell me why this manual piping version works but the flow version doesn't? Am I misunderstanding pipe/flow or is this just a limitation of the type system?

(expression) =>
    pipe(
      Match.value(expression),
      Match.when(Array.isEmptyReadonlyArray, () => []),
      Match.when(Array.isNonEmptyReadonlyArray, Array.unprepend)
    )

// vs

flow(
      Match.value,
      Match.when(Array.isEmptyReadonlyArray, () => []),
      Match.when(Array.isNonEmptyReadonlyArray, Array.unprepend)
    )

(expression) =>
    pipe(
      Match.value(expression),
      Match.when(Array.isEmptyReadonlyArray, () => []),
      Match.when(Array.isNonEmptyReadonlyArray, Array.unprepend)
    )

// vs

flow(
      Match.value,
      Match.when(Array.isEmptyReadonlyArray, () => []),
      Match.when(Array.isNonEmptyReadonlyArray, Array.unprepend)
    )

(expression) =>
    pipe(
      Match.value(expression),
      Match.when(Array.isEmptyReadonlyArray, () => []),
      Match.when(Array.isNonEmptyReadonlyArray, Array.unprepend)
    )

// vs

flow(
      Match.value,
      Match.when(Array.isEmptyReadonlyArray, () => []),
      Match.when(Array.isNonEmptyReadonlyArray, Array.unprepend)
    )

(expression) =>
    pipe(
      Match.value(expression),
      Match.when(Array.isEmptyReadonlyArray, () => []),
      Match.when(Array.isNonEmptyReadonlyArray, Array.unprepend)
    )

// vs

flow(
      Match.value,
      Match.when(Array.isEmptyReadonlyArray, () => []),
      Match.when(Array.isNonEmptyReadonlyArray, Array.unprepend)
    )

Issue with Pipe vs Flow in TypeScript

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