How to include node_module css file in scss with Webpacker in rails

Question

I can't figure out how to add a.css file into my.scss file with webpacker. I think its a loader issue but im not sure how to set it up. I'm very confuse with webpacker and the config files. Every thing i look up shows a config file for webpacker but my rails 6 the config is under environment.js with a different syntax which is confusing me. I think you can just seperate them in a file and require them. Anyway thats part of the issue.

So in my style.scss i have the line:

@import '~bootstrap-datepicker/dist/css/bootstrap-datepicker.css';

but im getting this massive error when i try to save with webpacker

ERROR in ./app/webpack/stylesheets/style.scss
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/src/index.js):
Error: Failed to find '~bootstrap-datepicker/dist/css/bootstrap-datepicker.css'
  in [
    /Users/daniel/Documents/GitHub/Ojai-Oil-App/app/webpack/stylesheets
  ]
    at /Users/daniel/Documents/GitHub/Ojai-Oil-App/node_modules/postcss-import/lib/resolve-id.js:35:13
    at /Users/daniel/Documents/GitHub/Ojai-Oil-App/node_modules/webpack/lib/NormalModule.js:316:20
    at /Users/daniel/Documents/GitHub/Ojai-Oil-App/node_modules/loader-runner/lib/LoaderRunner.js:367:11
    at /Users/daniel/Documents/GitHub/Ojai-Oil-App/node_modules/loader-runner/lib/LoaderRunner.js:233:18
    at context.callback (/Users/daniel/Documents/GitHub/Ojai-Oil-App/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
    at /Users/daniel/Documents/GitHub/Ojai-Oil-App/node_modules/postcss-loader/src/index.js:208:9
Child mini-css-extract-plugin node_modules/css-loader/dist/cjs.js??ref--7-1!node_modules/postcss-loader/src/index.js??ref--7-2!node_modules/sass-loader/dist/cjs.js??ref--7-3!app/webpack/stylesheets/style.scss:

    ERROR in ./app/webpack/stylesheets/style.scss (./node_modules/css-loader/dist/cjs.js??ref--7-1!./node_modules/postcss-loader/src??ref--7-2!./node_modules/sass-loader/dist/cjs.js??ref--7-3!./app/webpack/stylesheets/style.scss)
    Module build failed (from ./node_modules/postcss-loader/src/index.js):
    Error: Failed to find '~bootstrap-datepicker/dist/css/bootstrap-datepicker.css'
      in [
        /Users/daniel/Documents/GitHub/Ojai-Oil-App/app/webpack/stylesheets
      ]
        at /Users/daniel/Documents/GitHub/Ojai-Oil-App/node_modules/postcss-import/lib/resolve-id.js:35:13

im just really confused with webpacker setup. Any help would be great. This is my environment.js (webpacker config)

const { environment } = require('@rails/webpacker')
var webpack = require('webpack')
const css = require('./cssLoader')

environment.loaders.append('css', css);

environment.plugins.append(
    'Provide',
    new webpack.ProvidePlugin({
        $: 'jquery',
        jQuery: 'jquery',
        'window.jQuery': 'jquery'
    })
);

environment.loaders.append('jquery', {
    test: require.resolve('jquery'),
    use: [{
        loader: 'expose-loader',
        options: '$',
    }, {
        loader: 'expose-loader',
        options: 'jQuery',
    }],
});

module.exports = environment

Answer 1

Idk why but getting rid of the ~ worked. Isn't "~" supposed to point to node_modules? i dont understand why the ~ worked for all the font awesome and other resources i had in my scss.

for example my scss file looks like now:

/* Font Awesome */
$fa-font-path: '~@fortawesome/fontawesome-free/webfonts'; 
@import '~@fortawesome/fontawesome-free/scss/fontawesome';
@import '~@fortawesome/fontawesome-free/scss/solid';
@import '~@fortawesome/fontawesome-free/scss/regular';

@import 'bootstrap-datepicker/dist/css/bootstrap-datepicker.css';

Can anyone illuminate why the ~ worked for the font awesome but it was incorrect for the bootstrap-datepicker? Thank you