Move server add-on interfaces to flipper-common

Reviewed By: antonk52

Differential Revision: D34169419

fbshipit-source-id: 69fcc8da7d98f59818fbb5b486a488f19830cd81

desktop/flipper-common/src/ServerAddOn.tsx

@@ -7,9 +7,45 @@
  * @format
  */
 
-import {FlipperServerCommands} from './server-types';
+import {
+  FlipperServer,
+  FlipperServerCommands,
+  FlipperServerEvents,
+} from './server-types';
 
 export interface ServerAddOnControls {
   start: FlipperServerCommands['plugins-server-add-on-start'];
   stop: FlipperServerCommands['plugins-server-add-on-stop'];
 }
+
+// TODO: Share with js-flipper? Is it worth it?
+export type FlipperPluginReceiverRes =
+  | object
+  | string
+  | number
+  | boolean
+  | null
+  | undefined
+  | void;
+
+export type FlipperPluginReceiver = (
+  data: any,
+) => FlipperPluginReceiverRes | Promise<FlipperPluginReceiverRes>;
+
+export interface ServerAddOnPluginConnection {
+  send(method: string, params: unknown): void;
+  receive(method: string, receiver: FlipperPluginReceiver): void;
+}
+
+export interface FlipperServerForServerAddOn extends FlipperServer {
+  emit(
+    event: 'plugins-server-add-on-message',
+    payload: FlipperServerEvents['plugins-server-add-on-message'],
+  ): void;
+}
+
+export type ServerAddOnCleanup = () => Promise<void>;
+export type ServerAddOn = (
+  connection: ServerAddOnPluginConnection,
+  {flipperServer}: {flipperServer: FlipperServerForServerAddOn},
+) => Promise<ServerAddOnCleanup>;

desktop/flipper-common/src/index.tsx

@@ -51,3 +51,4 @@ export * from './clientUtils';
 export * from './settings';
 export * from './PluginDetails';
 export * from './doctor';
+export * from './ServerAddOn';