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ryochin/filter_map.ts

Last active February 13, 2025 03:00
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TS: filterMap using ramda.js
Raw
filter_map.ts
import { chain, isNotNil } from 'ramda'
export const filterMap = <A, B>(fn: (a: A) => B | null, list: A[]): B[] =>
chain((x: A): B[] => {
const result = fn(x)
return isNotNil(result) ? [result] : []
}, list)
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