jrtechs-sugarizer-lite/activities/Scratch.activity/326c5f98902ccd335b5b.worker.js

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/***/ "./node_modules/babel-loader/lib/index.js?!./node_modules/scratch-storage/src/FetchWorkerTool.worker.js":
/*!************************************************************************************************************!*\
  !*** ./node_modules/babel-loader/lib??ref--4!./node_modules/scratch-storage/src/FetchWorkerTool.worker.js ***!
  \************************************************************************************************************/
/*! no static exports found */
/***/ (function(module, exports) {

/* eslint-env worker */
var jobsActive = 0;
var complete = [];
var intervalId = null;
/**
 * Register a step function.
 *
 * Step checks if there are completed jobs and if there are sends them to the
 * parent. Then it checks the jobs count. If there are no further jobs, clear
 * the step.
 */

var registerStep = function registerStep() {
  intervalId = setInterval(function () {
    if (complete.length) {
      // Send our chunk of completed requests and instruct postMessage to
      // transfer the buffers instead of copying them.
      postMessage(complete.slice(), // Instruct postMessage that these buffers in the sent message
      // should use their Transferable trait. After the postMessage
      // call the "buffers" will still be in complete if you looked,
      // but they will all be length 0 as the data they reference has
      // been sent to the window. This lets us send a lot of data
      // without the normal postMessage behaviour of making a copy of
      // all of the data for the window.
      complete.map(function (response) {
        return response.buffer;
      }).filter(Boolean));
      complete.length = 0;
    }

    if (jobsActive === 0) {
      clearInterval(intervalId);
      intervalId = null;
    }
  }, 1);
};
/**
 * Receive a job from the parent and fetch the requested data.
 * @param {object} options.job A job id, url, and options descriptor to perform.
 */


var onMessage = function onMessage(_ref) {
  var job = _ref.data;

  if (jobsActive === 0 && !intervalId) {
    registerStep();
  }

  jobsActive++;
  fetch(job.url, job.options).then(function (response) {
    return response.arrayBuffer();
  }).then(function (buffer) {
    return complete.push({
      id: job.id,
      buffer: buffer
    });
  }).catch(function (error) {
    return complete.push({
      id: job.id,
      error: error
    });
  }).then(function () {
    return jobsActive--;
  });
};

if (self.fetch) {
  postMessage({
    support: {
      fetch: true
    }
  });
  self.addEventListener('message', onMessage);
} else {
  postMessage({
    support: {
      fetch: false
    }
  });
  self.addEventListener('message', function (_ref2) {
    var job = _ref2.data;
    postMessage([{
      id: job.id,
      error: new Error('fetch is unavailable')
    }]);
  });
}

/***/ })

/******/ });
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