# lib Update Request <!-- Please fill in each section completely. Thank you! Are you here for one of these commonly-requested lib changes? * Object.keys - see https://stackoverflow.com/questions/55012174/ * Array methods - see https://github.com/microsoft/TypeScript/issues/36554 * parseInt, parseFloat, isFinite, isNaN, etc. - see https://github.com/microsoft/TypeScript/issues/4002 The DOM lib is maintained elsewhere and you can skip a step by filing issues/PRs for the DOM at that repo. See https://github.com/microsoft/TypeScript-DOM-lib-generator --> ## Missing / Incorrect Definition according to DOM spec cancelBubble is a legacy alias of .stopPropagation() ## Documentation Link https://dom.spec.whatwg.org/#interface-event ## Reference https://github.com/microsoft/TypeScript-DOM-lib-generator/issues/1384