Custom Nodes

Nodes are rarely created by invoking createNode() directly, as one would have to supply types (for TypeScript), output port names, and the function createInPorts() on each call. Instead, createNode() usually gets wrapped inside a factory function which has these already bundled.

import {createNode, Node} from "flowcode";
type In<T> = {d_in: T};
type Out<T> = {d_out: T};
type Forwarder<T> = Node<In, Out>;
function createForwarder<T>(): Forwarder<T> {
    return createNode<In, Out>(["d_out"], (outputs) => ({
      d_in: (value, tag) => outputs.d_out(value, tag)
    }));
}