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Function: filterMap()

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

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

Call Signature​

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

Type Parameters​

• From

• To extends [] | unknown[]

Parameters​

fn​

(value) => undefined | null | To

Returns​

Function

Parameters​

iterable​

Iterable<From, any, any>

Returns​

Iterable<NonNullable<To>, any, any>

Defined in​

filters.d.ts:172

Call Signature​

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

Type Parameters​

• From

• To extends [] | unknown[]

Parameters​

fn​

(value) => undefined | null | To

iterable​

Iterable<From, any, any>

Returns​

Iterable<NonNullable<To>, any, any>

Defined in​

filters.d.ts:175

Call Signature​

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

Type Parameters​

• From

• To

Parameters​

fn​

(value) => undefined | null | To

Returns​

Function

Parameters​

iterable​

Iterable<From, any, any>

Returns​

Iterable<NonNullable<To>, any, any>

Defined in​

filters.d.ts:180

Call Signature​

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

Type Parameters​

• From

• To

Parameters​

fn​

(value) => undefined | null | To

iterable​

Iterable<From, any, any>

Returns​

Iterable<NonNullable<To>, any, any>

Defined in​

filters.d.ts:183