Unclear how to turn off sourcemaps in development

[brooksco]

I can't figure out what or where I need to change the webpacker setup to avoid compiling sourcemaps, following the webpack docs here for devtool https://webpack.js.org/configuration/devtool/.

Setting it in environments.js like:

environments.devtool = 'eval'

Doesn't appear to work, neither does adding a devtool: 'eval' in the webpacker.yml file under say, the development section. Is there a proper way to to adjust sourcemap generation with Webpacker?

I've read through #769, and it seems like what I've done above should turn off sourcemaps, but nothing appears to different whether or not I add the devtool line to environments.js.

[gauravtiwari]

@brooksco This setting is environment specific so if you don't need sourcemaps in development please set it in config/webpack/development.js (same as Rails application.rb and environments/** override)