Refactor lib/flows code to include initial router component

packages/node_modules/@node-red/runtime/lib/flows/router/index.js

@@ -0,0 +1,50 @@
+
+var settings;
+
+const LocalRouter = require("./localRouter");
+var defaultRouter;
+
+
+class Router {
+    constructor(stack) {
+        this.stack = stack || [];
+    }
+    send(source,destinationId,msg) {
+        var pos = 0;
+        var next = () => {
+            var router = this.stack[pos++];
+            if (router) {
+                router.send(source,destinationId,msg,next);
+            }
+        }
+        next();
+    }
+}
+
+function init(runtime) {
+    settings = runtime.settings;
+
+    defaultRouter = new Router([
+        new LocalRouter(),
+        new PostMessageLogger()
+    ])
+
+}
+
+function send(source,destinationId,msg) {
+    defaultRouter.send(source,destinationId,msg);
+}
+
+module.exports = {
+    init:init,
+    send: send
+}
+
+
+
+class PostMessageLogger {
+    constructor() {}
+    send(source,destinationId,msg,next) {
+        console.log(source.id.padEnd(16),"->",destinationId.padEnd(16),JSON.stringify(msg));
+    }
+}

packages/node_modules/@node-red/runtime/lib/flows/router/localRouter.js

@@ -0,0 +1,17 @@
+
+class LocalRouter {
+    constructor() {}
+    send(source,destinationId,msg,next) {
+        var node = source._flow.getNode(destinationId);
+        if (node) {
+            setImmediate(function() {
+                node.receive(msg);
+                next();
+            });
+        } else if (next) {
+            next()
+        }
+    }
+}
+
+module.exports = LocalRouter