I've tried to install wakatime on a new C9 workspace. At first, this error came up:
gbhojraj:~/workspace $ c9 install wakatime --force
module.js:327
throw err;
^
Error: Cannot find module 'npmlog'
at Function.Module._resolveFilename (module.js:325:15)
at Function.Module._load (module.js:276:25)
at Module.require (module.js:353:17)
at require (internal/module.js:12:17)
at /mnt/shared/sbin/npm:18:11
at Object.<anonymous> (/mnt/shared/sbin/npm:75:3)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
Command failed: /mnt/shared/sbin/npm