chore: add --environment-version option

Author: mshima

lib/cli.js

@@ -2,6 +2,7 @@
 import fs from 'node:fs';
 import path from 'node:path';
 import process from 'node:process';
+import {createRequire} from 'node:module';
 import {TerminalAdapter} from '@yeoman/adapter';
 import chalk from 'chalk';
 import updateNotifier from 'update-notifier';
@@ -42,6 +43,12 @@ const cli = generators.map(generator => {
 const firstCmd = cli[0] || {opts: {}, args: {}};
 const cmd = firstCmd.args[0];
 
+if (firstCmd.opts.environmentVersion) {
+  const envPackageJson = createRequire(import.meta.url)('yeoman-environment/package.json');
+  console.log(envPackageJson.version);
+  process.exit(0);
+}
+
 function updateCheck() {
   const notifier = updateNotifier({pkg});
   const message = [];