add unhandled rejection handler

packages/compass/src/main/handle-unhandled-rejection.ts

@@ -0,0 +1,48 @@
+import { app, dialog, clipboard } from 'electron';
+import cleanStack from 'clean-stack';
+import ensureError from 'ensure-error';
+import COMPASS_ICON from './icon';
+
+async function handleUnhandledRejection(err: Error): Promise<void> {
+  // eslint-disable-next-line no-console
+  console.error('handling unhandledRejection', err);
+  err = ensureError(err);
+  const stack = cleanStack(err.stack || '');
+
+  const detail = `${app.getName()} version ${app.getVersion()}\nStacktrace:\n${stack}`;
+  const message = `${app.getName()} has encountered an unexpected error`;
+
+  // eslint-disable-next-line no-console
+  console.error(`${message}: ${detail}`);
+
+  const showErrorMessageBox = async () => {
+    const { response } = await dialog.showMessageBox({
+      type: 'error',
+      buttons: [
+        'OK',
+        process.platform === 'darwin' ? 'Copy Error' : 'Copy error',
+      ],
+      icon: COMPASS_ICON,
+      defaultId: 0,
+      noLink: true,
+      message: message,
+      detail: detail,
+    });
+
+    if (response === 1) {
+      clipboard.writeText(`${message}\n${stack}`);
+      return;
+    }
+
+    if (response === 0) {
+      app.quit();
+      return;
+    }
+  };
+
+  // Dialog can't be used until app emits a `ready` event
+  await app.whenReady();
+  await showErrorMessageBox();
+}
+
+export { handleUnhandledRejection };

packages/compass/src/main/index.ts

@@ -3,6 +3,7 @@ import '../setup-hadron-distribution';
 
 import { app, dialog, crashReporter } from 'electron';
 import { handleUncaughtException } from './handle-uncaught-exception';
+import { handleUnhandledRejection } from './handle-unhandled-rejection';
 import { initialize as initializeElectronRemote } from '@electron/remote/main';
 import {
   doImportConnections,
@@ -100,6 +101,8 @@ async function main(): Promise<void> {
     }
     // eslint-disable-next-line @typescript-eslint/no-misused-promises
     process.on('uncaughtException', handleUncaughtException);
+    // eslint-disable-next-line @typescript-eslint/no-misused-promises
+    process.on('unhandledRejection', handleUnhandledRejection);
   } else {
     if (errorOutDueToAdditionalCommandLineFlags) {
       process.stderr.write(