Cleanup unused dependencies

Author: jdesrosiers

package.json

@@ -37,8 +37,6 @@
     "@types/content-type": "*",
     "@types/moo": "*",
     "@types/node": "*",
-    "@typescript-eslint/eslint-plugin": "*",
-    "@typescript-eslint/parser": "*",
     "eslint-import-resolver-typescript": "*",
     "eslint-plugin-import": "*",
     "typedoc": "*",

src/json/jsonast-util.js

@@ -156,9 +156,7 @@ const parseProperties = parseCommaSeparated(parseProperty, "}");
 
 /** @type (startToken: JsonToken, endToken?: JsonToken) => Position */
 const tokenPosition = (startToken, endToken) => {
-  if (!endToken) {
-    endToken = startToken;
-  }
+  endToken ??= startToken;
 
   return {
     start: {