Utilities Packages

Return an object's inherited property descriptors.

Return an array of an object's inherited enumerable and non-enumerable property names.

Return an array of an object's inherited symbol properties.

Return an array of an object's inherited writable property names and symbols.

Test whether all elements in a collection pass a test implemented by a predicate function, iterating from right to left.

Test whether all properties (own and inherited) of an object pass a test implemented by a predicate function.

Test whether all own properties of an object pass a test implemented by a predicate function.

Return a filename extension.

Create an object from key-value pairs.

Determine a function's name.

Function sequence.

Return the prototype of a provided object.

Return the global object.

Group values as arrays associated with distinct keys.

Group values according to an indicator function.

Group an object's own and inherited property values according to an indicator function.

Group an object's own property values according to an indicator function.

Return an array of an object's inherited writable property names.

Return the last grapheme cluster (i.e., user-perceived character) of a string.

Left pad a string.