lost+found/src/events.js
function _gpfEventsIsValidHandler (eventHandler) {
    var type = typeof eventHandler,
        validator = _gpfEventsHandlerValidators[type];
    if (validator === undefined) {
        return false;
    }
    return validator(eventHandler);
}
function _gpfEventsIsValidHandler (eventHandler) {
    var type = typeof eventHandler,
        validator = _gpfEventsHandlerValidators[type];
    if (validator === undefined) {
        return false;
    }
    return validator(eventHandler);
}
function _gpfEventsIsValidHandler ( eventHandler ) { var type = typeof eventHandler , validator = _gpfEventsHandlerValidators [ type ] ; if ( validator === undefined ) { return false ; } return validator ( eventHandler ) ; }
Check if the provided parameter is a valid Event Handler

@param {*} eventHandler Object to test
@return {Boolean} True if the parameter is valid eventHandler
Check if the provided parameter is a valid Event Handler