Cleanup and progress

common/event.ts

@@ -0,0 +1,20 @@
+export abstract class EventEmitter<HandlerT> {
+  private handlers: Partial<HandlerT>[] = [];
+
+  on(handlers: Partial<HandlerT>) {
+    this.handlers.push(handlers);
+  }
+
+  off(handlers: Partial<HandlerT>) {
+    this.handlers = this.handlers.filter((h) => h !== handlers);
+  }
+
+  emit(eventName: keyof HandlerT, ...args: any[]) {
+    for (let handler of this.handlers) {
+      let fn: any = handler[eventName];
+      if (fn) {
+        fn(...args);
+      }
+    }
+  }
+}

common/manifest.ts

@@ -0,0 +1,23 @@
+import * as plugbox from "../plugbox/types";
+import { EndpointHook } from "../plugbox/types";
+
+export type CommandDef = {
+  // Function name to invoke
+  invoke: string;
+
+  // Bind to keyboard shortcut
+  key?: string;
+  mac?: string;
+
+  // If to show in slash invoked menu and if so, with what label
+  // should match slashCommandRegexp
+  slashCommand?: string;
+};
+
+export type SilverBulletHooks = {
+  commands?: {
+    [key: string]: CommandDef;
+  };
+} & plugbox.EndpointHook;
+
+export type Manifest = plugbox.Manifest<SilverBulletHooks>;