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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
import { Selector } from "./types.ts";
/** * Applies the given transformer to all valuesin the given record and returns a new record containing the resulting keys * associated to the last value that produced them. * * Example: * * ```typescript * const usersById = { *     'a5ec': { name: 'Mischa' }, *     'de4f': { name: 'Kim' }, * } * const namesById = mapValues(usersById, it => it.name) * * console.assert(namesById === { *     'a5ec': 'Mischa', *     'de4f': 'Kim', * } * ``` */export function mapValues<T, O>(  record: Record<string, T>,  transformer: Selector<T, O>,): Record<string, O> {  const ret: Record<string, O> = {};  const entries = Object.entries(record);
  for (const [key, value] of entries) {    const mappedValue = transformer(value);
    ret[key] = mappedValue;  }
  return ret;}