minor fixes

Author: torkelo

src/app.ts

@@ -14,9 +14,7 @@ async function main() {
     const browser = new Browser(logger);
     const plugin = new GrpcPlugin(logger, browser);
     plugin.start();
-  }
-
-  if (command === 'server') {
+  } else if (command === 'server') {
     if (!argv.port) {
       console.log('Specify http port using --port=5000');
       return;

src/browser.ts

@@ -25,7 +25,7 @@ export class Browser {
   async render(options) {
     let browser;
     let page;
-    let env = Object.assign({}, process.env);
+    const env = Object.assign({}, process.env);
 
     try {
       this.validateOptions(options);
@@ -52,7 +52,7 @@ export class Browser {
 
       // wait for all panels to render
       await page.waitForFunction(() => {
-        var panelCount = document.querySelectorAll('.panel').length;
+        const panelCount = document.querySelectorAll('.panel').length;
         return (<any>window).panelsRendered >= panelCount;
       }, {
         timeout: options.timeout * 1000