Method #batchCacheOperations

deps/undici/src/lib/web/cache/cache.js:537–666

* @see https://w3c.github.io/ServiceWorker/#batch-cache-operations-algorithm * @param {CacheBatchOperation[]} operations * @returns {requestResponseList}

(operations)

   * @returns {requestResponseList}
   */
  #batchCacheOperations (operations) {
    // 1.
    const cache = this.#relevantRequestResponseList

    // 2.
    const backupCache = [...cache]

    // 3.
    const addedItems = []

    // 4.1
    const resultList = []

    try {
      // 4.2
      for (const operation of operations) {
        // 4.2.1
        if (operation.type !== 'delete' && operation.type !== 'put') {
          throw webidl.errors.exception({
            header: 'Cache.#batchCacheOperations',
            message: 'operation type does not match "delete" or "put"'
          })
        }

        // 4.2.2
        if (operation.type === 'delete' && operation.response != null) {
          throw webidl.errors.exception({
            header: 'Cache.#batchCacheOperations',
            message: 'delete operation should not have an associated response'
          })
        }

        // 4.2.3
        if (this.#queryCache(operation.request, operation.options, addedItems).length) {
          throw new DOMException('???', 'InvalidStateError')
        }

        // 4.2.4
        let requestResponses

        // 4.2.5
        if (operation.type === 'delete') {
          // 4.2.5.1
          requestResponses = this.#queryCache(operation.request, operation.options)

          // TODO: the spec is wrong, this is needed to pass WPTs
          if (requestResponses.length === 0) {
            return []
          }

          // 4.2.5.2
          for (const requestResponse of requestResponses) {
            const idx = cache.indexOf(requestResponse)
            assert(idx !== -1)

            // 4.2.5.2.1
            cache.splice(idx, 1)
          }