chore(NA): check git version on pre-commit hook install (elastic#84811)

* chore(NA): checks installed git version when installing pre-commit hook

* chore(NA): throw an error instead of log a warning

* chore(NA): use createFailError instead

* fix(NA): apply feedback from pr review for isCorrectGitVersionInstalled

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

packages/kbn-dev-utils/src/precommit_hook/cli.ts

@@ -23,15 +23,22 @@ import { promisify } from 'util';
 import { REPO_ROOT } from '@kbn/utils';
 
 import { run } from '../run';
+import { createFailError } from '../run';
 import { SCRIPT_SOURCE } from './script_source';
-import { getGitDir } from './get_git_dir';
+import { getGitDir, isCorrectGitVersionInstalled } from './git_utils';
 
 const chmodAsync = promisify(chmod);
 const writeFileAsync = promisify(writeFile);
 
 run(
   async ({ log }) => {
     try {
+      if (!(await isCorrectGitVersionInstalled())) {
+        throw createFailError(
+          `We could not detect a git version in the required range. Please install a git version >= 2.5. Skipping Kibana pre-commit git hook installation.`
+        );
+      }
+
       const gitDir = await getGitDir();
       const installPath = Path.resolve(REPO_ROOT, gitDir, 'hooks/pre-commit');
 

packages/kbn-dev-utils/src/precommit_hook/get_git_dir.ts → packages/kbn-dev-utils/src/precommit_hook/git_utils.ts

@@ -30,3 +30,20 @@ export async function getGitDir() {
     })
   ).stdout.trim();
 }
+
+// Checks if a correct git version is installed
+export async function isCorrectGitVersionInstalled() {
+  const rawGitVersionStr = (
+    await execa('git', ['--version'], {
+      cwd: REPO_ROOT,
+    })
+  ).stdout.trim();
+
+  const match = rawGitVersionStr.match(/[0-9]+(\.[0-9]+)+/);
+  if (!match) {
+    return false;
+  }
+
+  const [major, minor] = match[0].split('.').map((n) => parseInt(n, 10));
+  return major > 2 || (major === 2 && minor >= 5);
+}