Given a list of range specifiers for python, ensure compatibility.

Return a Command that checks that certain files exist. Raises a ValueError if any of the files are missing. Note: The check is skipped if th

* Extend an event with additional view-specific methods. * Adds a new property ('vega') to an event that provides a number * of methods for querying

* Extend an event with additional view-specific methods. * Adds a new property ('vega') to an event that provides a number * of methods for querying

* Standard/simple iteration through an event's collected dispatches.

* Finds comma separated selectors in a :global() e.g. ":global(.class1, .class2, .class3)" * and wraps them each in their own global ":global(.class1

* Extract a SyntheticInputEvent for `beforeInput`, based on either native * `textInput` or fallback behavior. * * @return {?object} A Synthet

* @return {?object} A SyntheticCompositionEvent.