Allow exit from credentials command (#3269)

# Why

The command `eas credentials` does not provide a way to exit other than control-C, if no platform flag is passed in.

# How

Add an "Exit" choice to the platform prompt.

# Test Plan

Tested locally.

Author: douglowder

packages/eas-cli/src/credentials/manager/SelectPlatform.ts

@@ -3,7 +3,7 @@ import { ManageIos } from './ManageIos';
 import { Analytics } from '../../analytics/AnalyticsManager';
 import { DynamicConfigContextFn } from '../../commandUtils/context/DynamicProjectConfigContextField';
 import { ExpoGraphqlClient } from '../../commandUtils/context/contextUtils/createGraphqlClient';
-import { selectPlatformAsync } from '../../platform';
+import { selectPlatformWithExitOptionAsync } from '../../platform';
 import { Actor } from '../../user/User';
 import { Client } from '../../vcs/vcs';
 import { CredentialsContextProjectInfo } from '../context';
@@ -20,7 +20,7 @@ export class SelectPlatform {
   ) {}
 
   async runAsync(): Promise<void> {
-    const platform = await selectPlatformAsync(this.flagPlatform);
+    const platform = await selectPlatformWithExitOptionAsync(this.flagPlatform);
 
     if (platform === 'ios') {
       await new ManageIos(this, process.cwd()).runAsync();

packages/eas-cli/src/platform.ts

@@ -1,6 +1,7 @@
 import { Platform } from '@expo/eas-build-job';
 
 import { AppPlatform } from './graphql/generated';
+import Log from './log';
 import { promptAsync } from './prompts';
 
 export const appPlatformDisplayNames: Record<AppPlatform, string> = {
@@ -47,21 +48,42 @@ export async function selectRequestedPlatformAsync(platform?: string): Promise<R
   return requestedPlatform;
 }
 
+export async function selectPlatformWithExitOptionAsync(platform?: string): Promise<Platform> {
+  return await selectPlatformInternalAsync(platform, true);
+}
 export async function selectPlatformAsync(platform?: string): Promise<Platform> {
+  return await selectPlatformInternalAsync(platform, false);
+}
+
+async function selectPlatformInternalAsync(
+  platform?: string,
+  allowExit?: boolean
+): Promise<Platform> {
   if (platform && Object.values(Platform).includes(platform.toLowerCase() as Platform)) {
     return platform.toLowerCase() as Platform;
   }
 
-  const { resolvedPlatform } = await promptAsync({
+  const platformChoices: { title: string; value: Platform | 'Exit' }[] = [
+    { title: 'Android', value: Platform.ANDROID },
+    { title: 'iOS', value: Platform.IOS },
+  ];
+
+  if (allowExit) {
+    platformChoices.push({ title: 'Exit', value: 'Exit' });
+  }
+
+  const result: any = await promptAsync({
     type: 'select',
     message: 'Select platform',
     name: 'resolvedPlatform',
-    choices: [
-      { title: 'Android', value: Platform.ANDROID },
-      { title: 'iOS', value: Platform.IOS },
-    ],
+    choices: platformChoices,
   });
-  return resolvedPlatform;
+  if (result.resolvedPlatform === 'Exit') {
+    Log.addNewLineIfNone();
+    Log.log('Exiting');
+    process.exit(0);
+  }
+  return result.resolvedPlatform;
 }
 
 export function toPlatforms(requestedPlatform: RequestedPlatform): Platform[] {