Error: Cannot find module 'source-map-support'

[Mte90]

I tried that tools and I get that errors that I've fixed in this way.
After npm install and launch npm run build I get this error on fx-runner cujojs/when#482
Fixed with this: https://github.com/yahoo/flux-examples/issues/137#issuecomment-93917057

When I try to run web-ext:

mte90:/tmp/web-ext/bin  ⑂ master +  $  ./web-ext                                                                                                                
module.js:341                                                                                                                                                   
    throw err;                                                                                                                                                  
    ^                                                                                                                                                           

Error: Cannot find module 'source-map-support'
    at Function.Module._resolveFilename (module.js:339:15)
    at Function.Module._load (module.js:290:25)
    at Module.require (module.js:367:17)
    at require (internal/module.js:16:19)
    at Object.<anonymous> (/tmp/web-ext/dist/web-ext.js:1:63)
    at Module._compile (module.js:413:34)
    at Object.Module._extensions..js (module.js:422:10)
    at Module.load (module.js:357:32)
    at Function.Module._load (module.js:314:12)
    at Module.require (module.js:367:17)

fixed with npm install source-map-support

After that fix the tools works without problem :-)

[kumar303]

Did you try in node 4.x? I don't think source-map-support is missing because it is not a direct dependency of web-ext. It is a dependency of babel-core -> babel-register. Thus, it seems like a bug triggered by node 5.7.0 somehow.

[kumar303]

Also, what exact version of node and what exact version of npm were you using? This seems more like an npm bug because it's dependency related.

[Mte90]

Node is 5.7.1 and npm is 2.14.2 , I cannot install an old version of node in my system actually.

[kumar303]

I think you need npm greater than 3.x. If that fixes the error let me know and I'll update the readme. It is not possible to downgrade npm (bootstrapping problems) so I have had a hard time trying to track this down.

You should be able to use nvm to work in older node versions: https://github.com/creationix/nvm

[Mte90]

Ok I checked, on my system I had a very old version but now I have 3.6.0.
now work without problem, sorry for the disturb.

[kumar303]

Thanks, I mentioned that npm 3.x is required in the README. #125

[kumar303]

oh! This was a real import error, fixed in 56f672d

[ManuJindal]

am getting same issue after upgrading appium to 1.5.3 ? Is there any missing file in v1.5.3 as well??
my npm version is latest 4.3.0