dom/serviceworkers/test/worker_unregister.js


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onmessage = function (e) {
  clients.matchAll().then(function (c) {
    if (c.length === 0) {
      // We cannot proceed.
      return;
    }

    registration
      .unregister()
      .then(
        function () {
          c[0].postMessage("DONE");
        },
        function () {
          c[0].postMessage("ERROR");
        }
      )
      .then(function () {
        c[0].postMessage("FINISH");
      });
  });
};