node/deps/npm/node_modules/is-date-object/index.js
isaacs 1721034a40 deps: upgrade npm to 6.10.0
PR-URL: https://github.com/nodejs/node/pull/28525
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
2019-07-18 15:12:49 -07:00

21 lines
551 B
JavaScript

'use strict';
var getDay = Date.prototype.getDay;
var tryDateObject = function tryDateObject(value) {
try {
getDay.call(value);
return true;
} catch (e) {
return false;
}
};
var toStr = Object.prototype.toString;
var dateClass = '[object Date]';
var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';
module.exports = function isDateObject(value) {
if (typeof value !== 'object' || value === null) { return false; }
return hasToStringTag ? tryDateObject(value) : toStr.call(value) === dateClass;
};