Errors Updating machina to latest v1.0.0-1

[lauraeci]

var underscore = require('underscore');
var machina = require('machina')(underscore); // 1.  Complains here undefined underscore

var DeviceFsm = machina.Fsm.extend({  // Removed (underscore) problem 1 and it still complains TypeError: Cannot call method 'extend' of undefined
});

Any suggestions of how to fix this would be very appreciated. Thanks!

[dcneiner]

Are underscore and machina listed in your application's package.json file and also in node_modules directory?

[lauraeci]

This is what we are starting from:

"machina": "^0.3.6", "underscore": "^1.6.0"

didn't have a package.json but I ran npm init and that's what it came up with.

[dcneiner]

@lauraeci Sorry I didn't take just a few seconds longer to look at your post before commenting. Machina has switched to a dependency on lodash, and has dropped the factory pattern. Using this should work for you:

var machina = require('machina');

var DeviceFsm = machina.Fsm.extend({

});

Where did you see the code that includes underscore? If its in the wiki or repo, I want to fix it. If its in a presentation, it's just out dated!

[ifandelse]

Hi @lauraeci, @dcneiner is correct, machina dropped underscore in favor of lodash in v0.3.7. Looks like the issue is related to the ^ character before the version number in your snippet above. That will allow npm to match against v0.3.7-v0.3.8 - if newer versions are available (which they are) and thus you're really getting an updated version that uses lodash instead. You can peg to a specific version by removing the ^ if you need to.

I'm sorry for the trouble - the jump for v0.3.6 to v0.3.7 should really have been a v0.4.0 (I'm still facepalming at past-me for trolling future me). You can see the specific version of machina npm installed by running npm ls machina in your project directory. When I tried npm install machina@^0.3.6, it pulled down v0.3.8.

Keep me posted if you run into more trouble!

[ifandelse]

@lauraeci Also - I meant to add, if you're upgrading to v1.0.0-1, be sure to change the version in your package.json that has machina at ^0.3.6. @dcneiner's example on how to require it should work. Thanks!

[lauraeci]

Thanks @dcneiner @ifandelse for the clarification. Yes, it looks like v1.0.0-1 wasn't installed. We actually didn't have a package.json which was causing my confusion (added one now), it was difficult to tell which version was installed. One thing I might suggest in the wiki is if the code blocks were separated into different examples to support different versions it might be a little easier to read. I think we must have pulled that old code from snippet on the web or something, probably an old stack overflow question.

Great module - its been working really well. Thanks for the help on upgrading, it works now! Cheers, -Laura

[ifandelse]

@lauraeci So glad to hear things are working well! Feel free to reach out if you run into any questions, etc.