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- '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();
- }
- });
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