Added build script

package.json

@@ -2,9 +2,17 @@
   "name": "analytics_script",
   "version": "1.0.0",
   "description": "",
-  "main": "index.js",
+  "main": "dist/analytics.cjs.js",
+  "module": "dist/analytics.es5.js",
+  "browser": "dist/analytics.umd.js",
+  "esnext": "dist/esnext/index.js",
+  "typings": "dist/esnext/index.d.ts",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "prebuild": "rimraf dist",
+    "prepublish": "npm run build",
+    "build": "rollup -c && tsc -p tsconfig.esnext.json",
+    "start": "rollup -c -w",
+    "tsc": "tsc -p tsconfig.esnext.json"
   },
   "repository": {
     "type": "git",
@@ -17,7 +25,17 @@
   },
   "homepage": "https://github.com/Blaumaus/analytics_script#readme",
   "dependencies": {
-    "@types/node": "^14.14.41",
-    "typescript": "^4.2.4"
+    "@types/node": "^14.14.41"
+  },
+  "devDependencies": {
+    "rimraf": "^3.0.2",
+    "rollup": "^2.53.0",
+    "rollup-plugin-commonjs": "^10.1.0",
+    "rollup-plugin-json": "^4.0.0",
+    "rollup-plugin-node-resolve": "^5.2.0",
+    "rollup-plugin-sourcemaps": "^0.6.3",
+    "rollup-plugin-typescript2": "^0.30.0",
+    "rollup-plugin-uglify": "^6.0.4",
+    "typescript": "^4.3.5"
   }
 }

rollup.config.js

@@ -0,0 +1,29 @@
+import resolve from 'rollup-plugin-node-resolve'
+import commonjs from 'rollup-plugin-commonjs'
+import sourceMaps from 'rollup-plugin-sourcemaps'
+import typescript from 'rollup-plugin-typescript2'
+import { uglify } from 'rollup-plugin-uglify'
+import pkg from './package.json'
+
+export default [
+  {
+    input: 'src/index.ts',
+    output: [
+      { file: pkg.browser, format: 'umd', name: 'analytics' },
+      { file: pkg.main, format: 'cjs' },
+      { file: pkg.module, format: 'es' },
+    ],
+    plugins: [
+      typescript(), resolve(), commonjs(), sourceMaps(),
+    ]
+  },
+  {
+    input: 'src/index.ts',
+    output: [
+      { file: 'dist/analytics.umd.min.js', format: 'umd', name: 'analytics' },
+    ],
+    plugins: [
+      typescript(), resolve(), commonjs(), uglify(),
+    ]
+  }
+]

tsconfig.esnext.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "moduleResolution": "node",
+    "target": "es2020",
+    "module": "es2015",
+    "lib": ["dom"],
+    "strict": true,
+    "sourceMap": true,
+    "declaration": true,
+    "allowSyntheticDefaultImports": true,
+    "experimentalDecorators": true,
+    "emitDecoratorMetadata": true,
+    "outDir": "dist/esnext",
+    "typeRoots": ["node_modules/@types"]
+  },
+  "include": ["src"]
+}

tsconfig.json

@@ -14,4 +14,4 @@
     "typeRoots": ["node_modules/@types"]
   },
   "include": ["src"]
-}
+}