electron app - auto find port

packages/web/src/utility/resolveApi.js

@@ -0,0 +1,19 @@
+export default function resolveApi() {
+  if (window.require) {
+    const electron = window.require('electron');
+
+    if (electron) {
+      const port = electron.remote.getGlobal('port');
+      return `http://localhost:${port}`;
+    }
+  }
+
+  // eslint-disable-next-line
+  const apiUrl = process.env.REACT_APP_API_URL;
+  if (apiUrl) {
+    if (apiUrl == 'ORIGIN') return window.location.origin;
+    return apiUrl;
+  }
+
+  return 'http://localhost:3000';
+}