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Variable: filterMap()

const filterMap: {<From, To>(fn): (iterable) => Iterable<NonNullable<To>>; <From, To>(fn, iterable): Iterable<NonNullable<To>>; <From, To>(fn): (iterable) => Iterable<NonNullable<To>>; <From, To>(fn, iterable): Iterable<NonNullable<To>>; }

Defined in: filters.d.ts:170

Returns an iterable containing the values of iterable transformed by fn in iteration order excluding the values for which fn returns null or undefined.

Call Signature​

<From, To>(fn): (iterable) => Iterable<NonNullable<To>>

Type Parameters​

From​

From

To​

To extends [] | unknown[]

Parameters​

fn​

(value) => undefined | null | To

Returns​

(iterable): Iterable<NonNullable<To>>

Parameters​

iterable​

Iterable<From>

Returns​

Iterable<NonNullable<To>>

Call Signature​

<From, To>(fn, iterable): Iterable<NonNullable<To>>

Type Parameters​

From​

From

To​

To extends [] | unknown[]

Parameters​

fn​

(value) => undefined | null | To

iterable​

Iterable<From>

Returns​

Iterable<NonNullable<To>>

Call Signature​

<From, To>(fn): (iterable) => Iterable<NonNullable<To>>

Type Parameters​

From​

From

To​

To

Parameters​

fn​

(value) => undefined | null | To

Returns​

(iterable): Iterable<NonNullable<To>>

Parameters​

iterable​

Iterable<From>

Returns​

Iterable<NonNullable<To>>

Call Signature​

<From, To>(fn, iterable): Iterable<NonNullable<To>>

Type Parameters​

From​

From

To​

To

Parameters​

fn​

(value) => undefined | null | To

iterable​

Iterable<From>

Returns​

Iterable<NonNullable<To>>

Example​

import { filterMap, pipe, reduce, toArray } from 'lfi'

console.log(
  pipe(
    [
      { sloth: `sloth` },
      { sloth: `lazy` },
      { notSloth: `active` },
      { sloth: `sleep` },
      { notSloth: `awake` },
    ],
    filterMap(object => object.sloth),
    reduce(toArray()),
  ),
)
//=> [ 'sloth', 'lazy', 'sleep' ]
Playground

Since​

v0.0.1