require and reloading modules
jg
I haven't found any way to reload a module from the shell. I've seen
there are options we can pass to require, but haven't been through it
yet.
Thanks in advance,
Best regards
jg
Kris Kowal
> I haven't found any way to reload a module from the shell. I've seen
> there are options we can pass to require, but haven't been through it
> yet.
Once you have instantiated a module in a sandbox, all of the modules
in that sandbox have hard references to the instances of their
dependencies, so I don't recommend replacing instantiated modules.
However, Narwhal has a "sandbox" module which will let you instantiate
new sandboxes that can even share a module loader. The module loaders
will reload modules if they've changed.
Take a look at the "sandbox" method in the "sandbox" module. You can
even do clever things where you load your "base set" of modules and
then inherit those whenever you create a new sandbox to speed things
up.
Kris Kowal
Hannes Wallnoefer
> > I haven't found any way to reload a module from the shell. I've seen
> > there are options we can pass to require, but haven't been through it
> > yet.
>
> Once you have instantiated a module in a sandbox, all of the modules
> in that sandbox have hard references to the instances of their
> dependencies, so I don't recommend replacing instantiated modules.
or have direct or transitive dependencies on modules that have
changed, both between shell input lines and HTTP requests. It does so
by a) keeping track of inter-module dependencies and b) avoiding
direct references to module exports from outside the JS runtime (e.g.
an HTTP server). It works well and is quite addictive once you get
used to it.
Hannes
Tom Robinson
Here's an example in Jack: https://github.com/280north/jack/blob/master/lib/jack/reloader.js
It's middleware that automatically reloads all files on every request. Not ideal but it works (unfortunately only in narwhal-rhino, not in narwhal-jsc though)
-tom
Jacques Granduel
jg