feat(rest-client): Allow for customising rest clients (#1780)

packages/rest-client/lib/index.js

@@ -1,33 +1,36 @@
-const jQuery = require('./jquery');
-const Superagent = require('./superagent');
-const Request = require('./request');
-const Fetch = require('./fetch');
-const Axios = require('./axios');
-const Angular = require('./angular');
+const jQueryClient = require('./jquery');
+const SuperagentClient = require('./superagent');
+const RequestClient = require('./request');
+const FetchClient = require('./fetch');
+const AxiosClient = require('./axios');
+const AngularClient = require('./angular');
 const Base = require('./base');
 const AngularHttpClient = require('./angular-http-client');
 
 const transports = {
-  jquery: jQuery,
-  superagent: Superagent,
-  request: Request,
-  fetch: Fetch,
-  axios: Axios,
-  angular: Angular,
+  jquery: jQueryClient,
+  superagent: SuperagentClient,
+  request: RequestClient,
+  fetch: FetchClient,
+  axios: AxiosClient,
+  angular: AngularClient,
   angularHttpClient: AngularHttpClient
 };
 
 function restClient (base = '') {
   const result = { Base };
 
   Object.keys(transports).forEach(key => {
-    const Service = transports[key];
-
-    result[key] = function (connection, options = {}) {
+    result[key] = function (connection, options = {}, Service = transports[key]) {
       if (!connection) {
         throw new Error(`${key} has to be provided to feathers-rest`);
       }
 
+      if (typeof options === 'function') {
+        Service = options;
+        options = {};
+      }
+
       const defaultService = function (name) {
         return new Service({ base, name, connection, options });
       };
@@ -51,5 +54,5 @@ function restClient (base = '') {
   return result;
 }
 
-module.exports = restClient;
+module.exports = Object.assign(restClient, { SuperagentClient, FetchClient, jQueryClient, RequestClient, AxiosClient, AngularClient, AngularHttpClient });
 module.exports.default = restClient;

packages/rest-client/test/index.test.js

@@ -1,6 +1,7 @@
 const fetch = require('node-fetch');
 const feathers = require('@feathersjs/feathers');
 const rest = require('../lib/index');
+const { FetchClient } = require('../lib/index');
 const assert = require('assert');
 
 const init = require('../lib');
@@ -94,4 +95,50 @@ describe('REST client tests', function () {
       assert.strictEqual(error.message, `An id must be provided to the 'todos.patch' method`);
     });
   });
+
+  it('uses a custom client', () => {
+    const app = feathers();
+    class MyFetchClient extends FetchClient {
+      find () {
+        return Promise.resolve({
+          connection: this.connection,
+          base: this.base,
+          message: 'Custom fetch client'
+        });
+      }
+    }
+
+    app.configure(rest('http://localhost:8889').fetch(fetch, {}, MyFetchClient));
+
+    return app.service('messages').find().then(data => {
+      assert.deepStrictEqual(data, {
+          connection: fetch,
+          base: 'http://localhost:8889/messages',
+          message: 'Custom fetch client'
+        });
+    });
+  });
+
+  it('uses a custom client as second arg', () => {
+    const app = feathers();
+    class MyFetchClient extends FetchClient {
+      find () {
+        return Promise.resolve({
+          connection: this.connection,
+          base: this.base,
+          message: 'Custom fetch client'
+        });
+      }
+    }
+
+    app.configure(rest('http://localhost:8889').fetch(fetch, MyFetchClient));
+
+    return app.service('messages').find().then(data => {
+      assert.deepStrictEqual(data, {
+          connection: fetch,
+          base: 'http://localhost:8889/messages',
+          message: 'Custom fetch client'
+        });
+    });
+  });
 });