'use strict'; | |
var $export = require('./_export') | |
, toObject = require('./_to-object') | |
, toPrimitive = require('./_to-primitive'); | |
$export($export.P + $export.F * require('./_fails')(function(){ | |
return new Date(NaN).toJSON() !== null || Date.prototype.toJSON.call({toISOString: function(){ return 1; }}) !== 1; | |
}), 'Date', { | |
toJSON: function toJSON(key){ | |
var O = toObject(this) | |
, pv = toPrimitive(O); | |
return typeof pv == 'number' && !isFinite(pv) ? null : O.toISOString(); | |
} | |
}); |