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'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.es/ecma262/#sec-date.prototype.tojson
$({ target: 'Date', proto: true, arity: 1, forced: FORCED }, {
// eslint-disable-next-line no-unused-vars -- required for `.length`
toJSON: function toJSON(key) {
var O = toObject(this);
var pv = toPrimitive(O, 'number');
return typeof pv == 'number' && !isFinite(pv) ? null : O.toISOString();
}
});