Interface PrototypeChainOfObjectConfig

configuration options for slicing the prototype chain returned by prototypeChainOfObject.

only the following combination of options are supported:

if all three options are defined, then the delta option will be ignored.

interface PrototypeChainOfObjectConfig {
    start?: number | Object;
    end?: null | number | Object;
    delta?: number;
}

Properties

start?: number | Object

the inclusive starting depth of the returned prototype chain. defaults to 0.

it can be one of the following:

a positive integer: slices the full prototype chain starting from the given index.
a negative integer: slices the full prototype chain starting from the end of the sequence.
an object: slices the full prototype chain starting from the point where the given object is found (inclusive). if the object is not found then the start option will be treated as 0 (i.e. starting from beginning of the chain array).

end?: null | number | Object

the exclusive ending depth of the returned prototype chain. defaults to -1.

it can be one of the following:

a positive integer: slices the full prototype chain ending at the given index.
a negative integer: slices the full prototype chain from the end of the sequence.
an object or null: slices the full prototype chain ending at the point where the given object is found (exclusive). if the object is not found then the end option will be treated as -1 (i.e. ending at the end of the chain array).

delta?: number

the additional depth to traverse on top of either start or end. make sure that you always provide a positive number.

when the start option is specified, you will be given delta number of prototype elements after the starting point.
when the end option is specified, you will be given delta number of prototype elements before the ending point.