method

buffer.Buffer.copyWithin

target: number,

start: number,

end?: number

): this;

Returns the this object after copying a section of the array identified by start and end to the same array starting at position target

@param target

If target is negative, it is treated as length+target where length is the length of the array.

@param start

If start is negative, it is treated as length+start. If end is negative, it is treated as length+end.

@param end

If not specified, length of the this object is used as its default value.