The Number.isFinite() static method determines whether the passed value is a finite number — that is, it checks that a given value is a number, and the number is neither positive Infinity, negative Infinity, nor NaN.

The Number.NEGATIVE_INFINITY static data property represents the negative Infinity value.

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The Int16Array() constructor creates Int16Array objects. The contents are initialized to 0 unless initialization data is explicitly provided.

The unicode accessor property of RegExp instances returns whether or not the u flag is used with this regular expression.

The return() method of Generator instances acts as if a return statement is inserted in the generator's body at the current suspended position, which finishes the generator and allows the generator to perform any cleanup tasks when combined with a try...finally block.

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The dotAll accessor property of RegExp instances returns whether or not the s flag is used with this regular expression.

The replace() method of String values returns a new string with one, some, or all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function called for each match. If pattern is a string, only the first occurrence will be replaced. The original string is left unchanged.

The Symbol.matchAll static data property represents the well-known symbol Symbol.matchAll. The String.prototype.matchAll() method looks up this symbol on its first argument for the method that returns an iterator, that yields matches of the current object against a string.