How do I stub node.js built-in fs during testing?

Question

I want to stub node.js built-ins like fs so that I don\'t actually make any system level file calls. The only thing I can think to do is to pass in fs

Answer 1

var fs = require('./myStubFs');

Would seem to be a big improvement. Whatever solution you find will probably involve writing your own stub functions. The ideal solution would be lower level so you don't have to touch all the files you want doing this, e.g. perhaps you want 3rd party libraries stubbed out as well.