Validate hook names when they are added

packages/node_modules/@node-red/runtime/lib/hooks.js

@@ -1,5 +1,17 @@
 const Log = require("@node-red/util").log;
 
+const VALID_HOOKS = [
+    // Message Routing Path
+   "onSend",
+   "preRoute",
+   "preDeliver",
+   "postDeliver",
+   "onReceive",
+   "postReceive",
+   "onComplete"
+]
+
+
 // Flags for what hooks have handlers registered
 let states = { }
 
@@ -34,6 +46,9 @@ let labelledHooks = { }
  */
 function add(hookId, callback) {
     let [id, label] = hookId.split(".");
+    if (VALID_HOOKS.indexOf(id) === -1) {
+        throw new Error(`Invalid hook '${id}'`);
+    }
     if (label) {
         if (labelledHooks[label] && labelledHooks[label][id]) {
             throw new Error("Hook "+hookId+" already registered")
@@ -149,8 +164,17 @@ function clear() {
     labelledHooks = {}
     states = {}
 }
+
+function has(hookId) {
+    let [id, label] = hookId.split(".");
+    if (label) {
+        return !!(labelledHooks[label] && labelledHooks[label][id])
+    }
+    return !!states[id]
+}
+
 module.exports = {
-    get states() { return states },
+    has,
     clear,
     add,
     remove,