build: use ecmascript module syntax with supported node versions (#5)

Author: zimeg

.github/workflows/lint.yml

@@ -14,9 +14,9 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
-          - 18.x
           - 20.x
           - 22.x
+          - 24.x
     steps:
       - uses: actions/checkout@v5
       - name: Use Node.js ${{ matrix.node-version }}

app.js

@@ -1,4 +1,4 @@
-const { App } = require('@slack/bolt');
+import { App } from '@slack/bolt';
 
 // Initializes your app with your Slack app and bot token
 const app = new App({

package.json

@@ -1,8 +1,10 @@
 {
+  "$schema": "https://www.schemastore.org/package.json",
   "name": "bolt-js-blank-template",
   "version": "1.0.0",
   "description": "A blank template for Slack apps",
   "main": "app.js",
+  "type": "module",
   "scripts": {
     "lint": "npx @biomejs/biome check",
     "lint:fix": "npx @biomejs/biome check --write",