fix: convert 'suggest yarn install' script from Shell to JS (#32356)

fix: convert suggest yarn install script from Shell to JS

package.json

@@ -18,7 +18,7 @@
   },
   "type": "module",
   "scripts": {
-    "postinstall": "sh ./.husky/update-history",
+    "postinstall": "node scripts/update-history.js",
     "build": "env-cmd --silent cross-env CONTENT_ROOT=files BUILD_OUT_ROOT=build yari-build",
     "content": "env-cmd --silent cross-env CONTENT_ROOT=files yari-tool",
     "filecheck": "env-cmd --silent cross-env CONTENT_ROOT=files yari-filecheck --cwd=.",

scripts/update-history.js

@@ -0,0 +1,16 @@
+/**
+ * This script stores the 'main' branch's HEAD commit hash in .husky/_/history
+ * The stored commit hash is used by the post-merge script .husky/post-merge
+ */
+
+import fs from "node:fs";
+import { execGit } from "./utils.js";
+
+const HUSKY_ROOT = ".husky/_/";
+const HISTORY_FILE = HUSKY_ROOT + "history";
+
+const branch = execGit(["rev-parse", "--abbrev-ref", "HEAD"], { cwd: "." });
+if (branch === "main" && fs.existsSync(HUSKY_ROOT)) {
+  const hash = execGit(["rev-parse", "HEAD"], { cwd: "." });
+  fs.writeFileSync(HISTORY_FILE, hash);
+}