External module "array/base/arraylike2object/docs/types/index.d"

Export assignment arraylike2object

• arraylike2object(x: Collection): ArrayObject

• Converts a one-dimensional array-like object to an object likely to have the same "shape".

  Notes

  • This function is intended as a potential performance optimization. In V8, for example, even if two objects share common properties, if those properties were added in different orders or if one object has additional properties not shared by the other object, then those objects will have different "hidden" classes. If a function is provided many objects having different "shapes", some JavaScript VMs (e.g., V8) will consider the function "megamorphic" and fail to perform various runtime optimizations. Accordingly, the intent of this function is to standardize the "shape" of the object holding array data to ensure that internal functions operating on arrays are provided consistent argument "shapes".

  Parameters

  • x: Collection

    input array

  Returns ArrayObject

  object containing array data

  Example

  var x = [ 1, 2, 3, 4, 5, 6 ];
  
  var obj = arraylike2object( x );
  // returns {...}