Function variadicArgumentToArray

We want to provide methods which accept a variable single number of elements and arrays. The overloaded signature to achieve this is:

function doSomething(array: T[])
function doSomething(...varArgs: T[])
function doSomething(first: undefined | T | T[], ...rest: T[]) {
  //implementation
}

This wrapper methods makes it easy build an array from the input.

Returns

Array from the input or empty array if no input was given.

Deprecated

This method should be replaced by transformVariadicArgumentToArray.