The toLocaleString() method of Number values returns a string with a language-sensitive representation of this number. In implementations with Intl.NumberFormat API support, this method delegates to Intl.NumberFormat.

The catch() method of Promise instances schedules a function to be called when the promise is rejected. It immediately returns another Promise object, allowing you to chain calls to other promise methods. It is a shortcut for then(undefined, onRejected).

The valueOf() method of Object instances converts the this value to an object. This method is meant to be overridden by derived objects for custom type conversion logic.

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The Promise.any() static method takes an iterable of promises as input and returns a single Promise. This returned promise fulfills when any of the input's promises fulfills, with this first fulfillment value. It rejects when all of the input's promises reject (including when an empty iterable is passed), with an AggregateError containing an array of rejection reasons.

The Promise.withResolvers() static method returns an object containing a new Promise object and two functions to resolve or reject it, corresponding to the two parameters passed to the executor of the Promise() constructor.

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The toPrecision() method of Number values returns a string representing this number to the specified number of significant digits.

The valueOf() method of Number values returns the value of this number.

The arguments accessor property of Function instances returns the arguments passed to this function. For strict, arrow, async, and generator functions, accessing the arguments property throws a TypeError.