style: disable no-return-assign on line in tools/start

Author: langpavel

tools/start.js

@@ -151,6 +151,7 @@ async function start() {
   serverCompiler.plugin('compile', () => {
     if (!appPromiseIsResolved) return;
     appPromiseIsResolved = false;
+    // eslint-disable-next-line no-return-assign
     appPromise = new Promise(resolve => (appPromiseResolve = resolve));
   });