Pass supportsMethod as an argument to the exportPersistedState

Summary:
This diff adds supportsMethod as a closure which can be used to verify a method is implemented on the client side.

It will be used in the next diff

Reviewed By: jknoxville

Differential Revision: D21176415

fbshipit-source-id: fe16d966c58d36558034ce4ade8f58f8031aab18

desktop/app/src/plugin.tsx

@@ -31,6 +31,15 @@ export function callClient(
   return (method, params) => client.call(id, method, false, params);
 }
 
+// This function is intended to be called from outside of the plugin.
+// If you want to `supportsMethod` from the plugin use, this.client.supportsMethod
+export function supportsMethod(
+  client: Client,
+  id: string,
+): (method: string) => Promise<boolean> {
+  return (method) => client.supportsMethod(id, method);
+}
+
 export interface PluginClient {
   // eslint-disable-next-line
   send(method: string, params?: Parameters): void;
@@ -109,6 +118,7 @@ export abstract class FlipperBasePlugin<
         store: ReduxState | undefined,
         idler?: Idler,
         statusUpdate?: (msg: string) => void,
+        supportsMethod?: (method: string) => Promise<boolean>,
       ) => Promise<StaticPersistedState | undefined>)
     | null;
   static getActiveNotifications:

desktop/app/src/utils/__tests__/pluginUtils.node.js

@@ -40,6 +40,7 @@ function createMockFlipperPluginWithExportPersistedState(id: string) {
       callClient: (string, ?Object) => Promise<Object>,
       persistedState: ?{msg: string},
       store: ?ReduxState,
+      supportsMethod?: (string) => Promise<boolean>,
     ): Promise<?{msg: string}> => {
       return Promise.resolve({
         msg: 'MockFlipperPluginWithExportPersistedState',

desktop/app/src/utils/exportData.tsx

@@ -22,6 +22,7 @@ import {
   FlipperDevicePlugin,
   FlipperPlugin,
   callClient,
+  supportsMethod,
   FlipperBasePlugin,
 } from '../plugin';
 import {default as BaseDevice} from '../devices/BaseDevice';
@@ -472,6 +473,7 @@ export async function fetchMetadata(
             state,
             idler,
             statusUpdate,
+            supportsMethod(client, pluginId),
           ),
           `Timed out while collecting data for ${pluginName}`,
         );