Function createMap

packages/jest-haste-map/src/__tests__/index.test.js:124–124

const cacheFilePath = '/cache-file';
const object = data => Object.assign(Object.create(null), data);
const createMap = obj => new Map(Object.keys(obj).map(key => [key, obj[key]]));

// Jest toEqual does not match Map instances from different contexts
// This normalizes them for the uses cases in this test