feature(async-script): adding support for using async pre-request scripts

packages/bruno-electron/src/ipc/network/index.js

@@ -113,7 +113,7 @@ const registerNetworkIpc = (mainWindow, watcher, lastOpenedCollections) => {
       const requestScript = get(request, 'script.req');
       if(requestScript && requestScript.length) {
         const scriptRuntime = new ScriptRuntime();
-        const result = scriptRuntime.runRequestScript(requestScript, request, envVars, collectionVariables, collectionPath);
+        const result = await scriptRuntime.runRequestScript(requestScript, request, envVars, collectionVariables, collectionPath);
 
         mainWindow.webContents.send('main:script-environment-update', {
           envVariables: result.envVariables,

packages/bruno-js/src/runtime/script-runtime.js

@@ -1,5 +1,12 @@
 const { NodeVM } = require('vm2');
 const path = require('path');
+const http = require('http');
+const https = require('https');
+const stream = require('stream');
+const util = require('util');
+const zlib = require('zlib');
+const url = require('url');
+const punycode = require('punycode');
 const Bru = require('../bru');
 const BrunoRequest = require('../bruno-request');
 const BrunoResponse = require('../bruno-response');
@@ -11,16 +18,16 @@ const lodash = require('lodash');
 const moment = require('moment');
 const uuid = require('uuid');
 const nanoid = require('nanoid');
+const axios = require('axios');
 const CryptoJS = require('crypto-js');
 
 class ScriptRuntime {
   constructor() {
   }
 
-  runRequestScript(script, request, envVariables, collectionVariables, collectionPath) {
+  async runRequestScript(script, request, envVariables, collectionVariables, collectionPath){
     const bru = new Bru(envVariables, collectionVariables);
     const req = new BrunoRequest(request);
-
     const context = {
       bru,
       req
@@ -32,19 +39,29 @@ class ScriptRuntime {
         external: true,
         root: [collectionPath],
         mock: {
+          // node libs
+          path,
+          stream,
+          util,
+          url,
+          http,
+          https,
+          punycode,
+          zlib,
+          // 3rd party libs
           atob,
           btoa,
           lodash,
           moment,
           uuid,
           nanoid,
+          axios,
           'crypto-js': CryptoJS
         }
       }
     });
-
-    vm.run(script, path.join(collectionPath, 'vm.js'));
-
+    const asyncVM = vm.run(`module.exports = async () => { ${script} }`,  path.join(collectionPath, 'vm.js'));
+    await asyncVM();
     return {
       request,
       envVariables,