The Standard Library has been moved to JSR. See the blog post for details.
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
/** * Applies the given transformer to all values in the given record and returns a * new record containing the resulting keys associated to the last value that * produced them. * * @example * ```ts * import { mapValues } from "https://deno.land/std@$STD_VERSION/collections/map_values.ts"; * import { assertEquals } from "https://deno.land/std@$STD_VERSION/assert/assert_equals.ts"; * * const usersById = { * "a5ec": { name: "Mischa" }, * "de4f": { name: "Kim" }, * }; * const namesById = mapValues(usersById, (it) => it.name); * * assertEquals( * namesById, * { * "a5ec": "Mischa", * "de4f": "Kim", * }, * ); * ``` */export function mapValues<T, O, K extends string>( record: Readonly<Record<K, T>>, transformer: (value: T, key: K) => O,): Record<K, O>;/** * Applies the given transformer to all values in the given record and returns a * new record containing the resulting keys associated to the last value that * produced them. * * @example * ```ts * import { mapValues } from "https://deno.land/std@$STD_VERSION/collections/map_values.ts"; * import { assertEquals } from "https://deno.land/std@$STD_VERSION/assert/assert_equals.ts"; * * const usersById = { * "a5ec": { name: "Mischa" }, * "de4f": { name: "Kim" }, * }; * const namesById = mapValues(usersById, (it) => it.name); * * assertEquals( * namesById, * { * "a5ec": "Mischa", * "de4f": "Kim", * }, * ); * ``` */export function mapValues<T, O, K extends string>( record: Readonly<Partial<Record<K, T>>>, transformer: (value: T, key: K) => O,): Partial<Record<K, O>>;export function mapValues<T, O, K extends string>( record: Record<K, T>, transformer: (value: T, key: K) => O, // deno-lint-ignore no-explicit-any): any { // deno-lint-ignore no-explicit-any const ret: any = {}; const entries = Object.entries<T>(record);
for (const [key, value] of entries) { const mappedValue = transformer(value, key as K);
ret[key] = mappedValue; }
return ret;}