// TODO: Remove from `core-js@4` var uncurryThis = require('../internals/function-uncurry-this'); var defineBuiltIn = require('../internals/define-built-in'); var DatePrototype = Date.prototype; var INVALID_DATE = 'Invalid Date'; var TO_STRING = 'toString'; var un$DateToString = uncurryThis(DatePrototype[TO_STRING]); var getTime = uncurryThis(DatePrototype.getTime); // `Date.prototype.toString` method // https://tc39.es/ecma262/#sec-date.prototype.tostring if (String(new Date(NaN)) != INVALID_DATE) { defineBuiltIn(DatePrototype, TO_STRING, function toString() { var value = getTime(this); // eslint-disable-next-line no-self-compare -- NaN check return value === value ? un$DateToString(this) : INVALID_DATE; }); }