Update config to support ES6 classes.

Targeting ES5 causes the "fixes issue #145" test in cookieJar.spec.ts
to fail. Changing the target to the next newest (ES6) requires adding
"moduleResolution" to the tsconfig, which then causes issues with using
`import` in our TypeScript, but `require` in the legacy vows tests. To
support both, we have to bump to a newer version of TypeScript to use
the new "node16" module/moduleResolution. (Note: I didn't jump to the
_latest_ TypeScript to try to support older projects, as well.)

lib/validators.ts

@@ -80,11 +80,4 @@ export function validate(bool: boolean, cb?: any, options?: any): void {
   }
 }
 
-export class ParameterError extends Error {
-  constructor(...params: any[]) {
-    super(...params);
-    if (Object.setPrototypeOf) {
-      Object.setPrototypeOf(this, ParameterError.prototype);
-    }
-  }
-}
+export class ParameterError extends Error {}

package.json

@@ -90,12 +90,12 @@
     "format": "npm run eslint -- --fix"
   },
   "engines": {
-    "node": ">=6"
+    "node": ">=16"
   },
   "devDependencies": {
     "@types/jest": "^27.4.0",
-    "@types/punycode": "^2.1.0",
     "@types/psl": "^1.1.0",
+    "@types/punycode": "^2.1.0",
     "async": "^2.6.2",
     "eslint": "^5.16.0",
     "eslint-config-prettier": "^4.2.0",
@@ -105,7 +105,7 @@
     "nyc": "^14.0.0",
     "prettier": "^1.17.0",
     "ts-jest": "^27.1.3",
-    "typescript": "4.5.5",
+    "typescript": "4.7.4",
     "vows": "^0.8.2"
   },
   "dependencies": {

tsconfig.json

@@ -3,7 +3,9 @@
     "experimentalDecorators": true,
     "outDir": "./dist",
     "allowJs": true,
-    "target": "es5",
+    "target": "ES2016",
+    "moduleResolution": "node16",
+    "module": "Node16",
     "resolveJsonModule": true,
     "esModuleInterop": true,
     "strict": true,