| 'use strict'; |
| var $export = require('./_export'); |
| var toObject = require('./_to-object'); |
| var toPrimitive = require('./_to-primitive'); |
| var toISOString = require('./_date-to-iso-string'); |
| var classof = require('./_classof'); |
| |
| $export($export.P + $export.F * require('./_fails')(function () { |
| return new Date(NaN).toJSON() !== null |
| || Date.prototype.toJSON.call({ toISOString: function () { return 1; } }) !== 1; |
| }), 'Date', { |
| // 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 : |
| (!('toISOString' in O) && classof(O) == 'Date') ? toISOString.call(O) : O.toISOString(); |
| } |
| }); |