node()

Construct a node (R-node-iface / D5 / L1.9 deps-first). node([], null, { initial }) — state node (manual source; emit via .down) node([], fn) — producer (runs on activation) node([a, b], fn) — compute / derived node([dep]) — passthrough wire

Import

import { node } from "@graphrefly/ts/core";

Signature

function node(
  deps: Node<unknown>[] = [],
  handleOrFn: Handle | NodeFn | null = null,
  opts: NodeOptions<T> = {},
): Node<T>

Parameters

Parameter	Type	Description
deps	Node<unknown>[]	Upstream nodes this node reads positionally from ctx.
handleOrFn	Handle | NodeFn | null	Dispatcher handle, node function, or null for a manual source/state node.
opts	NodeOptions<T>	Node runtime options such as initial, name, pool, dispatcher, and restore data.

Returns

A graph-agnostic Node.

Example

import { depLatest, node } from "@graphrefly/ts/core";

const source = node<number>([], null, { initial: 1 });
const doubled = node<number>([source], (ctx) => {
  ctx.down([["DATA", Number(depLatest(ctx, 0)) * 2]]);
});

Source

packages/ts/src/node/node.ts