Firefox download IndexedDB data through console

downloadIndexedDBfirefoxConsole.js

const dbName = prompt("Enter the name of the database:");

const request = indexedDB.open(dbName);
request.onerror = function(event) {
  console.error("Could not open database", event.target.errorCode);
};
request.onsuccess = function(event) {
  const db = event.target.result;
  const objectStoreNames = Array.from(db.objectStoreNames);
  const data = {};

  const transaction = db.transaction(objectStoreNames, "readonly");

  transaction.onerror = function(event) {
    console.error("Could not retrieve data from object stores");
  };

  objectStoreNames.forEach(function(objectStoreName) {
    const objectStore = transaction.objectStore(objectStoreName);
    const objectStoreData = [];

    objectStore.openCursor().onsuccess = function(event) {
      const cursor = event.target.result;
      if (cursor) {
        objectStoreData.push(cursor.value);
        cursor.continue();
      } else {
        data[objectStoreName] = objectStoreData;

        if (Object.keys(data).length === objectStoreNames.length) {
          const json = JSON.stringify(data, null, 2);
          const blob = new Blob([json], { type: "application/json" });

          const link = document.createElement("a");
          link.href = URL.createObjectURL(blob);
          link.download = `${dbName}.json`;
          document.body.appendChild(link);
          link.click();
          document.body.removeChild(link);
        }
      }
    };
  });
};