Modernize tn1150 for Node.js 24

Modernizes tn1150 for Node.js 24, replaces unorm with built-in normalization, keeps TN1150 compare behavior covered by tests, and adds green Node 24 CI.

Author: jozefizso

.github/workflows/build.yml

@@ -0,0 +1,28 @@
+name: build
+
+on:
+  push:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    name: build node v24 ubuntu-latest
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v6
+
+      - name: setup node 24
+        uses: actions/setup-node@v6
+        with:
+          node-version: 24
+
+      - name: npm ci
+        run: npm ci
+
+      - name: npm test
+        run: npm test

index.d.ts

@@ -0,0 +1,2 @@
+export function compare(lhs: string, rhs: string): number;
+export function normalize(text: string): string;

index.js

@@ -14,8 +14,6 @@
  *
  */
 
-var unorm = require('unorm')
-
 var lowerCaseMap = new Map([
   [0x0000, 0xffff],
   [0x0041, 0x0061],
@@ -376,4 +374,8 @@ function HFSPlusFastUnicodeCompare (str1, str2) {
 }
 
 exports.compare = HFSPlusFastUnicodeCompare
-exports.normalize = unorm.nfd
+exports.normalize = normalize
+
+function normalize (text) {
+  return text.normalize('NFD')
+}