Comparing node.js GPIO implementations
Here are two simple programs testing the performance of my rpio library against popular alternatives which use the
/sys interface (with the number of npm stars indicated for a rough idea of popularity).
rpi-gpio (9 stars)
This test is based on an example on the rpi-gpio page.
As modules which uses
/sys depend upon asynchronous behaviour they require callbacks to ensure that the next operation starts only when the previous one has completed.