Type Alias: RawOptionalReducerWithFinish<Value, Finished, This>

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

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 = unknown

• Finished = Value

• 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

Playground

Since

v2.0.0

Defined in

reducers.d.ts:92