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Type Alias: RawOptionalReducerWithFinish<Value, Finished, This>

RawOptionalReducerWithFinish<Value, Finished, This> = RawOptionalReducerWithoutFinish<Value, This> & object

Defined in: reducers.d.ts:92

A reducer that reduces by combining pairs of values using RawOptionalReducerWithoutFinish.add and then transforming the final value using RawOptionalReducerWithFinish.finish.

Type declaration​

finish()​

finish: (this, acc) => Finished

Parameters​

this​

This

acc​

Value

Returns​

Finished

Type Parameters​

Value​

Value = unknown

Finished​

Finished = Value

This​

This = unknown

Example​

import { or, pipe, reduce } from 'lfi'

console.log(
  pipe(
    [1, 2, 3, 4],
    reduce(
      // This is a `RawOptionalReducerWithFinish`
      {
        add: (number1, number2) => number1 + number2,
        finish: sum => `The sum is ${sum}`,
      },
    ),
    or(() => `There are no numbers`),
  ),
)
//=> The sum is 10
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Since​

v2.0.0