21 lines
497 B
Plaintext
21 lines
497 B
Plaintext
// @flow strict
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import objectEntries from '../polyfills/objectEntries';
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import type { ObjMap } from './ObjMap';
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/**
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* Creates an object map with the same keys as `map` and values generated by
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* running each value of `map` thru `fn`.
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*/
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export default function mapValue<T, V>(
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map: ObjMap<T>,
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fn: (value: T, key: string) => V,
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): ObjMap<V> {
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const result = Object.create(null);
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for (const [key, value] of objectEntries(map)) {
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result[key] = fn(value, key);
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}
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return result;
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}
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