chore: stop using NeDB to convert pack files to JSON

tools/json-pack-tools.js

@@ -4,7 +4,6 @@
 
 import promises from "node:fs/promises";
 import path from "node:path";
-import Datastore from "@seald-io/nedb";
 
 /**
  * Removes unwanted data from a pack entry
@@ -57,25 +56,20 @@ export async function convertJSONToPack(contents) {
 /**
  * Converts a pack file (NeDB) to a JSON string.
  * @param {string} filename The name of the pack file
- * @returns {Promise<string>} A promise that resolves to an array of the documents in the pack file
+ * @returns {Promise<string>} A promise that resolves to JSON string representing the pack file
  */
-function convertPackFileToJSON(filename) {
-    const db = new Datastore({ filename, autoload: true });
-    return new Promise((resolve, reject) => {
-        db.find({}, (err, docs) => {
-            if (err) {
-                reject(err);
-            } else {
-                resolve(
-                    JSON.stringify(
-                        docs.map((entry) => cleanPackEntry(entry)),
-                        undefined,
-                        4,
-                    ) + "\n",
-                );
-            }
-        });
-    });
+async function convertPackFileToJSON(filename) {
+    const data = await promises.readFile(filename, { flag: "r", encoding: "utf-8" });
+    return (
+        JSON.stringify(
+            data.split(/\r?\n/).flatMap((entry) => {
+                if (entry === "") return [];
+                return cleanPackEntry(JSON.parse(entry));
+            }),
+            undefined,
+            4,
+        ) + "\n"
+    );
 }
 
 /**