Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
var isDate = require('is-date-object'); var assert = require('assert'); assert.notOk(isDate(undefined)); assert.notOk(isDate(null)); assert.notOk(isDate(false)); assert.notOk(isDate(true)); assert.notOk(isDate(42)); assert.notOk(isDate('foo')); assert.notOk(isDate(function () {})); assert.notOk(isDate([])); assert.notOk(isDate({})); assert.notOk(isDate(/a/g)); assert.notOk(isDate(new RegExp('a', 'g'))); assert.ok(isDate(new Date()));Simply clone the repo, npm install, and run npm test
