Also known as ECMAScript 2019 or ES10
Returns a new array with any sub-arrays flattened.
Identical to map but also flattens as well.
Trims white space from the start of a string.
Trims white space from the end of a string.
Try-Catch without Error Parameter
No longer have to provide an Error parameter to the Catch
Creates an object or transforms key-value pairs into an object.
A read-only description that returns the optional description of Symbol objects.
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