Method arrayproto_flat

builtin_array.go:1193–1203

(call FunctionCall)

}

func (r *Runtime) arrayproto_flat(call FunctionCall) Value {
	o := call.This.ToObject(r)
	l := toLength(o.self.getStr("length", nil))
	depthNum := int64(1)
	if len(call.Arguments) > 0 {
		depthNum = call.Argument(0).ToInteger()
	}
	a := arraySpeciesCreate(o, 0)
	r.flattenIntoArray(a, o, l, 0, depthNum, nil, nil)
	return a
}

func (r *Runtime) flattenIntoArray(target, source *Object, sourceLen, start, depth int64, mapperFunction func(FunctionCall) Value, thisArg Value) int64 {
	targetIndex, sourceIndex := start, int64(0)