| 'use strict'; |
| var $ = require('../internals/export'); |
| var fails = require('../internals/fails'); |
| var toObject = require('../internals/to-object'); |
| var toPrimitive = require('../internals/to-primitive'); |
| |
| var FORCED = fails(function () { |
| return new Date(NaN).toJSON() !== null |
| || Date.prototype.toJSON.call({ toISOString: function () { return 1; } }) !== 1; |
| }); |
| |
| // `Date.prototype.toJSON` method |
| // https://tc39.github.io/ecma262/#sec-date.prototype.tojson |
| $({ target: 'Date', proto: true, forced: FORCED }, { |
| // eslint-disable-next-line no-unused-vars |
| toJSON: function toJSON(key) { |
| var O = toObject(this); |
| var pv = toPrimitive(O); |
| return typeof pv == 'number' && !isFinite(pv) ? null : O.toISOString(); |
| } |
| }); |