Lodash dependency

[dalerka]

Just a quick heads up:
followed all steps in the tutorial on Medium but kept getting error even after removing /node_modules and reinstalling dependencies:

> grial start
module.js:487
    throw err;
    ^
Error: Cannot find module 'lodash'
    at Function.Module._resolveFilename (module.js:485:15)

Only yarn add lodash resolved this issue and everything worked according to the tutorial.
Is this a correct behavior or should the Grial server work without loading the whole Lodash lib?