使用Webpacker将Lodash添加到新的Rails 5.2应用程序

Question

So, using Rails 5.2beta ( gem install rails --pre ), if you create a new app via rails new myapp --webpack=react ... how would I go about incorporating Lodash into my flow from there?

I've mucked around with babel-plugin-lodash and lodash-webpack-plugin to no avail.

The compile doesn't fail if I do something like import { _pick, _map } from 'lodash/array'; ... but those variables are undefined when trying to use them.

I'm a bit lost as I'm both new to webpacker & webpack, and a lot of existing examples seem to target an older version of webpack?

Anyway, thank you for any help...

UPDATE:

Ok, looks like you can just do import map from "lodash/map"

Answer 1

So where are you trying to use lodash from? By this I mean are you sure the files are getting compiled / processed by Webpacker, or are they getting processed via the Asset Pipeline?

On my webpacker project I realized that there's a problem: that yes, regular old Javascript compiled with the Asset Pipeline won't know about the NPM Modules included via Webpack. (or at least the require statements wouldn't work).

Because of this I made a hard rule: all javascript goes where webpacker expect it ( app/javascript ) and no Javascript goes in app/assets . We only use the asset pipeline for CSS (which works great in our case, as I still don't think React - our frontend framework of choice - has a good story around site wide CSS).