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@nlozgachev/pipekit

map

map<A, B>(f): (data) => Option<B>

Defined in: Core/Option.ts:129

Transforms the value inside a Option if it exists.

Type Parameters

Section titled “Type Parameters”

A

Section titled “A”

A

B

Section titled “B”

B

Parameters

Section titled “Parameters”

f

Section titled “f”

(a) => B

Returns

Section titled “Returns”

(data): Option<B>

Parameters

Section titled “Parameters”

data

Section titled “data”

Option<A>

Returns

Section titled “Returns”

Option<B>

Example

Section titled “Example”
pipe(Option.of(5), Option.map(n => n * 2)); // Some(10)
pipe(Option.none(), Option.map(n => n * 2)); // None