CONSOLE MESSAGE: Error: Script error. Test importScripts with error. AT_TARGET: 2, BUBBLING_PHASE: 3, CAPTURING_PHASE: 1, NONE: 0, bubbles: false, cancelBubble: false, cancelable: true, colno: 14, composed: false, composedPath: function composedPath() { [native code] }, currentTarget: [object Worker], defaultPrevented: false, error: null, eventPhase: 2, filename: http://127.0.0.1:8000/workers/resources/worker-importScripts-error.js, initEvent: function initEvent() { [native code] }, isTrusted: true, lineno: 2, message: Error: Script error., preventDefault: function preventDefault() { [native code] }, returnValue: true, srcElement: [object Worker], stopImmediatePropagation: function stopImmediatePropagation() { [native code] }, stopPropagation: function stopPropagation() { [native code] }, target: [object Worker], type: error