in src/UserFunction.js [256:267]
function _highWaterMark(handler) {
if (
typeof handler[HANDLER_HIGHWATERMARK] === 'undefined' ||
handler[HANDLER_HIGHWATERMARK] === null ||
handler[HANDLER_HIGHWATERMARK] === false
) {
return undefined;
}
const hwm = parseInt(handler[HANDLER_HIGHWATERMARK]);
return isNaN(hwm) ? undefined : hwm;
}