async getAllMatching()

in workbox-v4.3.1/workbox-core.dev.js [1156:1196]

• 37 lines of code
• 6 McCabe index (conditional complexity)

    async getAllMatching(storeName, {
      index,
      query = null,
      // IE errors if query === `undefined`.
      direction = 'next',
      count,
      includeKeys
    } = {}) {
      return await this.transaction([storeName], 'readonly', (txn, done) => {
        const store = txn.objectStore(storeName);
        const target = index ? store.index(index) : store;
        const results = [];

        target.openCursor(query, direction).onsuccess = ({
          target
        }) => {
          const cursor = target.result;

          if (cursor) {
            const {
              primaryKey,
              key,
              value
            } = cursor;
            results.push(includeKeys ? {
              primaryKey,
              key,
              value
            } : value);

            if (count && results.length >= count) {
              done(results);
            } else {
              cursor.continue();
            }
          } else {
            done(results);
          }
        };
      });
    }