the javascript

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If a function can take parameters with multiple different type shapes then conformity can be checked with a checkParam_typeEither() call.

In the example below, the function objNumArr() is only allowed to receive a single parameter of an object, a single number, or an array.

function PRE_check_obj_num_arr(obj_num_arr){
  allowed_types = ['object', 'number', 'array']
  return type_czech.checkParam_typeEither(obj_num_arr, allowed_types)
}  

objNumArr = type_czech.linkUp(objNumArr, PRE_check_obj_num_arr)

function objNumArr(obj_num_arr){}

objNumArr({})            // pass
objNumArr({key:'key'})   // pass
objNumArr([])            // pass
objNumArr([1, 2, 3])     // pass
objNumArr(9876543210)    // pass

objNumArr('String-Fail') // fail