Function transform

src/background/utils/patch-db.js:24–65

(db)

    };
  }
  function transform(db) {
    const tx = db.transaction([SCRIPTS, S_REQUIRE, S_CACHE, VALUES]);
    const updates = {};
    let processing = 3;
    const done = () => {
      processing -= 1;
      if (!processing) resolve(storage.api.set(updates));
    };
    const getAll = (storeName, callback) => {
      const req = tx.objectStore(storeName).getAll();
      req.onsuccess = () => callback(req.result);
      req.onerror = reject;
    };
    getAll(SCRIPTS, (allScripts) => {
      const uriMap = {};
      allScripts.forEach((script) => {
        const { code, id, uri } = script;
        updates[storage[S_SCRIPT].toKey(id)] = transformScript(script);
        updates[storage[S_CODE].toKey(id)] = code;
        uriMap[uri] = id;
      });
      getAll(VALUES, (allValues) => {
        allValues.forEach(({ uri, [VALUES]: values }) => {
          const id = uriMap[uri];
          if (id) updates[storage[S_VALUE].toKey(id)] = values;
        });
        done();
      });
    });
    getAll(S_CACHE, (allCache) => {
      allCache.forEach(({ uri, data }) => {
        updates[storage[S_CACHE].toKey(uri)] = data;
      });
      done();
    });
    getAll(S_REQUIRE, (allRequire) => {
      allRequire.forEach(({ uri, code }) => {
        updates[storage[S_REQUIRE].toKey(uri)] = code;
      });
      done();
    });
  }
  function transformScript(script) {
    return {
      meta: parseMeta(script.code),