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Summary: There is no
ErrorEvent
declaration in dom.js. This diff addsErrorEvent
.MDN documentation: https://developer.mozilla.org/en-US/docs/Web/API/ErrorEvent
whatwg documentation: https://html.spec.whatwg.org/multipage/webappapis.html#the-errorevent-interface
w3.org documentation: https://www.w3.org/TR/html52/webappapis.html#the-errorevent-interface