feat(v2-cli): Added new environment info command (#1410)

* Adds new info command

Shows up essential debugging information about the environment

* Minor fix

* Remove npmGlobalPackages from envinfo

* Fix up glob pattern

* Minor fix

* Update glob pattern

* fix envinfo glob pattern and params

* prettier

* simplify glob

packages/docusaurus/bin/docusaurus.js

@@ -8,6 +8,7 @@
  */
 
 const chalk = require('chalk');
+const envinfo = require('envinfo');
 const semver = require('semver');
 const path = require('path');
 const program = require('commander');
@@ -94,6 +95,22 @@ program
     });
   });
 
+program
+  .command('info')
+  .description('Shows debugging information about the local environment')
+  .action(() => {
+    console.log(chalk.bold('\nEnvironment Info:'));
+    envinfo
+      .run({
+        System: ['OS', 'CPU'],
+        Binaries: ['Node', 'Yarn', 'npm'],
+        Browsers: ['Chrome', 'Edge', 'Firefox', 'Safari'],
+        npmPackages: '?(@)docusaurus{*,*/**}',
+        npmGlobalPackages: '?(@)docusaurus{*,*/**}',
+      })
+      .then(console.log);
+  });
+
 program.arguments('<command>').action(cmd => {
   program.outputHelp();
   console.log(`  ${chalk.red(`\n  Unknown command ${chalk.yellow(cmd)}.`)}`);

packages/docusaurus/package.json

@@ -47,6 +47,7 @@
     "css-loader": "^1.0.0",
     "docsearch.js": "^2.5.2",
     "ejs": "^2.6.1",
+    "envinfo": "^7.2.0",
     "express": "^4.16.4",
     "front-matter": "^3.0.1",
     "fs-extra": "^7.0.0",