effect-io-ai

Package: effect
Module: Record

Record.mapKeys

Maps the keys of a ReadonlyRecord while preserving the corresponding values.

Example

import * as assert from "node:assert"
import { mapKeys } from "effect/Record"

assert.deepStrictEqual(mapKeys({ a: 3, b: 5 }, (key) => key.toUpperCase()), { A: 3, B: 5 })

Signature

declare const mapKeys: { <K extends string, A, K2 extends string>(f: (key: K, a: A) => K2): (self: ReadonlyRecord<K, A>) => Record<K2, A>; <K extends string, A, K2 extends string>(self: ReadonlyRecord<K, A>, f: (key: K, a: A) => K2): Record<K2, A>; }

Source

Since v2.0.0