Add info command to backstage-cli 🚀

Signed-off-by: Yuvaraja Balamurugan <yuvaraja.balamurugan@clark.de>

packages/cli/src/commands/index.ts

@@ -224,6 +224,11 @@ export function registerCommands(program: CommanderStatic) {
     .command('create-github-app <github-org>')
     .description('Create new GitHub App in your organization.')
     .action(lazy(() => import('./create-github-app').then(m => m.default)));
+
+  program
+    .command('info')
+    .description('Debug info of dependencies.')
+    .action(lazy(() => import('./info').then(m => m.default)));
 }
 
 // Wraps an action function so that it always exits and handles errors

packages/cli/src/commands/info.ts

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { promisify } from 'util';
+import { exec } from 'child_process';
+import { version as cliVersion } from '../../package.json';
+import os from 'os';
+
+export default async () => {
+  const promisifiedExec = promisify(exec);
+
+  await new Promise(async () => {
+    const yarnVersion = await promisifiedExec('yarn --version');
+    const npmVersion = await promisifiedExec('npm --version');
+
+    console.log(
+      `Operating System - ${os.type}(${os.release}) - ${os.platform}/${os.arch}`,
+    );
+
+    console.log('\n------------------\n');
+
+    console.log('Node.js environment:\n');
+    console.log(`Node.js - ${process.version}`);
+    console.log(`@backstage/cli- ${cliVersion}`);
+
+    console.log('\n------------------\n');
+
+    console.log('Global environment:\n');
+    console.log(
+      `yarn - ${
+        yarnVersion.stderr ? yarnVersion.stderr : yarnVersion.stdout.trim()
+      }`,
+    );
+    console.log(
+      `npm - ${
+        npmVersion.stderr ? npmVersion.stderr : npmVersion.stdout.trim()
+      }`,
+    );
+
+    // TODO - How to find whether the current repo is a clone or a fork or a create-app generated repo?
+
+    // TODO - How to find actual resolved versions of backstage libraries that the app and backend packages build against?
+  });
+};