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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | 8x 8x 1x 8x 1x 3x 3x 3x 3x 3x | import { Pred } from './_types';
import { purry } from './purry';
/**
* Loops each record element and maps against provided function.
* @param record The target object.
* @param fn Mapping function.
* @returns The new record.
* @signature
* P.flatMapRecord(record, fn)
* @signature
* P.flatMapRecord(record, fn)
* @example
* P.flatMapRecord({ a: 1, b: 2, c: 3 }, ([k,v]) => [[k, v * 2], [k + "_abc", v * 2]]) // => { a: 2, a_abc: 2, b: 4, b_abc: 4, c: 6, c_abc: 6 }
* P.flatMapRecord({ a: 1, b: 2, c: 3 }, ([k,v]) => [[k, v * 2], [k + "_abc", v * 2]]) // => { a: 2, a_abc: 2, b: 4, b_abc: 4, c: 6, c_abc: 6 }
* @category Object, Pipe
*/
export function mapRecord<
T extends Record<string, unknown>,
K extends string,
V
>(record: T, fn: Pred<[keyof T, T[keyof T]], [K, V]>): Record<K, V>;
export function mapRecord<
T extends Record<string, unknown>,
K extends string,
V extends unknown
>(fn: (v: [keyof T, T[keyof T]]) => [K, V]): (record: T) => Record<K, V>;
export function mapRecord() {
return purry(_mapRecord(), arguments);
}
const _mapRecord = () => <T extends { [k: string]: any }, K extends string, V>(
rec: T,
fn: (v: [keyof T, T[keyof T]]) => [K, V]
) => {
return Object.entries(rec)
.map(([k, v]) => {
return fn([k as keyof T, (v as unknown) as T[keyof T]]);
})
.reduce((acc, [k, v]) => {
acc[k] = v;
return acc;
}, {} as Record<K, V>);
};
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