fix: Update TypeScript (#257)

package.json

@@ -8,13 +8,14 @@
     "node": ">=14"
   },
   "devDependencies": {
+    "@tsconfig/node14": "^1.0.3",
     "@types/jest": "^28.1.8",
     "@types/node": "^18.7.14",
     "coveralls": "^3.1.1",
     "jest": "^28.1.3",
     "rimraf": "^3.0.2",
     "ts-jest": "^28.0.8",
-    "typescript": "^4.8.2"
+    "typescript": "^4.9.4"
   },
   "scripts": {
     "prepublish": "npm run clean-build",

tsconfig.json

@@ -1,19 +1,18 @@
-{
-	"compilerOptions": {
-		"target": "ES6",
-		"module": "commonjs",
-		"moduleResolution": "node",
-		"sourceMap": true,
-        "declaration": true,
-		"noImplicitAny": true,
-		"noImplicitThis": true,
-		"noUnusedLocals": true,
-		"strict": true,
-		"noUnusedParameters": true,
-		"strictNullChecks": true,
-		"outDir": "dist"
-	},
-	"include": [
-		"src"
-	]
-}
+{
+    "$schema": "https://json.schemastore.org/tsconfig",
+    "extends": "@tsconfig/node14/tsconfig.json",
+    "compilerOptions": {
+        "module": "commonjs",
+        "moduleResolution": "node",
+        "sourceMap": true,
+        "declaration": true,
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "noUnusedLocals": true,
+        "strict": true,
+        "noUnusedParameters": true,
+        "strictNullChecks": true,
+        "outDir": "dist"
+    },
+    "include": ["src"]
+}