# Source: decrypter-worker.js

    import window from 'global/window';
    import {Decrypter} from 'aes-decrypter';
    import { createTransferableMessage } from './bin-utils';

    /**
     * Our web worker interface so that things can talk to aes-decrypter
     * that will be running in a web worker. the scope is passed to this by
     * webworkify.
     *
     * @param {Object} self
     *        the scope for the web worker
     */
    const DecrypterWorker = function(self) {
      self.onmessage = function(event) {
        const data = event.data;
        const encrypted = new Uint8Array(data.encrypted.bytes,
                                         data.encrypted.byteOffset,
                                         data.encrypted.byteLength);
        const key = new Uint32Array(data.key.bytes,
                                    data.key.byteOffset,
                                    data.key.byteLength / 4);
        const iv = new Uint32Array(data.iv.bytes,
                                   data.iv.byteOffset,
                                   data.iv.byteLength / 4);

        /* eslint-disable no-new, handle-callback-err */
        new Decrypter(encrypted,
                      key,
                      iv,
                      function(err, bytes) {
                        window.postMessage(createTransferableMessage({
                          source: data.source,
                          decrypted: bytes
                        }), [bytes.buffer]);
                      });
        /* eslint-enable */
      };
    };

    export default (self) => {
      return new DecrypterWorker(self);
    };