testing/web-platform/tests/service-workers/service-worker/resources/oninstall-throw-error-then-prevent-default-worker.js


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// Ensure we can handle multiple error handlers. One error handler
// calling preventDefault should cause the event to be treated as
// handled.
self.addEventListener('error', function(event) {});
self.addEventListener('error', function(event) { event.preventDefault(); });
self.addEventListener('error', function(event) {});
self.addEventListener('install', function(event) { throw new Error(); });