chore: add _scripts/git-hook-init.js (husky alternative)

_scripts/git-hooks-init.js

@@ -0,0 +1,57 @@
+#!/usr/bin/env node
+'use strict';
+
+var Fs = require('node:fs/promises');
+var Path = require('node:path');
+
+async function copyScripts() {
+  var pkgDir = Path.join(__dirname, '..');
+  var scriptsDir = Path.join(pkgDir, '_scripts');
+  var gitFile = Path.join(pkgDir, '.git');
+
+  // if this is a submodule, '.git' will be a file with a
+  // path to the actual git module directory
+  var gitDir = await Fs.readFile(gitFile, 'utf8')
+    .catch(function (e) {
+      // console.error(e);
+      //return 'gitdir: ../.git/modules/installers';
+      return 'gitdir: ./.git';
+    })
+    .then(function (str) {
+      var parts = str.split(': ');
+      str = parts[1];
+      str = str.trim();
+
+      return Path.resolve(pkgDir, str);
+    });
+
+  var gitHooksDir = Path.join(gitDir, 'hooks');
+
+  var src = Path.join(scriptsDir, 'git-hooks-pre-commit');
+  var dst = Path.join(gitHooksDir, 'pre-commit');
+
+  console.info(`[git-hooks] Checking for pre-commit hooks...`);
+  var relSrc = Path.relative(pkgDir, src);
+  var relDst = Path.relative(pkgDir, dst);
+  await Fs.access(dst)
+    .then(function () {
+      console.info(`[git-hooks] Found ${relDst}`);
+    })
+    .catch(async function (e) {
+      // ignore e
+      await Fs.mkdir(gitHooksDir, { recursive: true });
+      await Fs.copyFile(src, dst);
+      await Fs.chmod(dst, 0o755);
+      console.info(`[git-hooks] Found template ${relSrc}`);
+      console.info(`[git-hooks] Initialized ${relDst}`);
+    });
+}
+
+copyScripts()
+  .then(function () {
+    process.exit(0);
+  })
+  .catch(function (e) {
+    console.error(e);
+    process.exit(1);
+  });