Implemented dual support for ESM and CommonJS

Author: rmraya

package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "typesxml",
   "productName": "TypesXML",
-  "version": "1.16.0",
+  "version": "1.17.0",
   "description": "Open source XML library written in TypeScript",
   "keywords": [
     "XML",
@@ -14,18 +14,31 @@
     "JSON"
   ],
   "scripts": {
-    "build": "tsc",
-    "testDtd": "tsc && node dist/tests/DTDTestSuite.js",
-    "testJson": "tsc && node dist/tests/JsonConversionTest.js"
+    "build": "npm run build:cjs && npm run build:esm",
+    "build:cjs": "tsc --project tsconfig.cjs.json",
+    "build:esm": "tsc --project tsconfig.esm.json && node scripts/create-esm-package.cjs",
+    "testDtd": "npm run build:cjs && node dist/cjs/tests/DTDTestSuite.js",
+    "testJson": "npm run build:cjs && node dist/cjs/tests/JsonConversionTest.js"
   },
   "author": {
     "name": "Rodolfo M. Raya",
     "url": "https://maxprograms.com",
     "email": "rmraya@maxprograms.com"
   },
   "license": "EPL-1.0",
-  "main": "dist/index.js",
-  "types": "dist/index.d.ts",
+  "main": "./dist/cjs/index.js",
+  "module": "./dist/esm/index.js",
+  "types": "./dist/esm/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/esm/index.d.ts",
+      "import": "./dist/esm/index.js",
+      "require": "./dist/cjs/index.js",
+      "default": "./dist/esm/index.js"
+    },
+    "./package.json": "./package.json",
+    "./cjs/*": "./dist/cjs/*"
+  },
   "files": [
     "/dist"
   ],

package.json

@@ -1,9 +1,4 @@
-import {
-    jsonObjectToXmlDocument,
-    xmlStringToJsonObject,
-    type JsonValue,
-    type XmlJsonDocument
-} from "typesxml";
+import { jsonObjectToXmlDocument, xmlStringToJsonObject, type JsonValue, type XmlJsonDocument } from "typesxml";
 
 function demoJsonToXml(): void {
     const simpleJson: JsonValue = {

samples/json-conversion.ts

@@ -15,7 +15,7 @@
     "json-conversion": "npm run build --silent && node dist/json-conversion.js"
   },
   "dependencies": {
-    "typesxml": "^1.16.0"
+    "typesxml": "^1.17.0"
   },
   "devDependencies": {
     "typescript": "^5.9.3"

samples/package.json

@@ -0,0 +1,13 @@
+#!/usr/bin/env node
+const { mkdirSync, writeFileSync } = require('node:fs');
+const { join } = require('node:path');
+
+const esmDir = join(__dirname, '..', 'dist', 'esm');
+mkdirSync(esmDir, { recursive: true });
+
+const pkgPath = join(esmDir, 'package.json');
+const pkgContents = {
+  type: 'module'
+};
+
+writeFileSync(pkgPath, JSON.stringify(pkgContents, null, 2));

scripts/create-esm-package.cjs

@@ -0,0 +1,6 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./dist/cjs"
+  }
+}

tsconfig.cjs.json

@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "module": "ES2022",
+    "moduleResolution": "Bundler",
+    "outDir": "./dist/esm"
+  }
+}