Update TypeScript config and revise package metadata

Refined `tsconfig.json` for stricter typing and compatibility by modifying compiler options and file inclusion. Updated `package.json` to replace the `author` field with an `owners` array for more detailed contributor metadata.

package.json

@@ -40,10 +40,13 @@
   "devDependencies": {
     "@types/jquery": "^3.5.32"
   },
-  "author": {
-    "name": "Goldman Kim",
-    "email": "bbalganjjm@gmail.com"
-  },
+  "owners": [
+    {
+      "name": "Goldman Kim",
+      "githubUsername": "bbalganjjm",
+      "email": "bbalganjjm@gmail.com"
+    }
+  ],
   "license": "LGPL v2.1",
   "bugs": {
     "url": "https://github.com/bbalganjjm/natural_js/issues",

tsconfig.json

@@ -1,18 +1,20 @@
 {
   "compilerOptions": {
-    "target": "ES5",
-    "module": "ES6",
-    "strict": true,
-    "esModuleInterop": true,
-    "skipLibCheck": true,
-    "baseUrl": ".",
-    "typeRoots": ["./@types"],
-    "allowJs": true,
-    "checkJs": false,
-    "noEmit": true
+    "module": "commonjs",
+    "lib": [
+      "es6",
+      "dom"
+    ],
+    "noImplicitAny": true,
+    "noImplicitThis": true,
+    "strictNullChecks": true,
+    "strictFunctionTypes": true,
+    "types": [],
+    "noEmit": true,
+    "forceConsistentCasingInFileNames": true
   },
-  "include": [
-    "./src/**/*",
-    "./@types/**/*"
+  "files": [
+    "./@types/index.d.ts",
+    "./@types/natural_js-tests.ts"
   ]
-}
+}