flow-nodes

Experimental / tryout of a flow-based programming with nodes. It lays somewhere between functional programming and node based flows such as NODE-RED. (but then without the graphical interface)

The idea is to create a set of nodes that can be connected to each other to create a flow. A node can be linked to one or more nodes. And one or more nodes can be linked to one node. You could create a flow that does something like this:

example

This would create a flow that fetches the content of https://example.com and then selects all h2 elements from the response and logs it to the console.

//create the nodes

const nFetch = createHttpRequestNode({
  name: "fetchNode1",
  url: "https://example.com",
});

const nHtmlSelector = createHtmlSelectorNode({
  name: "selectorNode1",
  selector: "h2",
});

const nDebugger = createDebuggerNode({ name: "debuggerNode1" });

// connect the nodes

nFetch.to(nHtmlSelector).to(nDebugger);

//start the flow
nFetch.process({ msg: {} });

connecting nodes

// you can connect one node to another
node1.to(node2).to(node3);

// you can connect one node to multiple nodes
node1.to(node2);
node1.to(node3);

//or shorter
node1.to([node2, node3]);

// you can connect multiple nodes to one node
node1.to(node3);
node2.to(node3);

// connect nodes in a loop
// (be careful for infinite loops, incorporate flow altering / limiting nodes)
node1.to(node2);
node2.to(node3);
node3.to(node1);