As in Material Component Web\'s example, I want to be able to import SCSS from my node_modules
like this:
@import \'@material/elevation/mdc-elevatio
EDIT: Webpack has a section on sass-loader now: https://webpack.js.org/loaders/sass-loader/ also mentioning includepaths.
I had the same issue with @material and Vue. I managed to resolve the problem without adjusting the use
property directly.
Solution
Step 1: First create a default Vue 2.1 project using the CLI.
Your file structure will have a ./build
directory.
Step 2: Open the file 'utils' you will see a cssLoaders()
function which returns an object/map for the languages vue-loader
supports.
You will see both sass
and scss
in that map.
Step 3: Change the values of sass
and scss
to:
sass: generateLoaders('sass', {
indentedSyntax: true,
includePaths: [path.resolve(__dirname, '../node_modules')]
}),
scss: generateLoaders('sass', {
includePaths: [path.resolve(__dirname, '../node_modules')]
}),
Step 4: Go to the .vue file you're using and change the lang
attribute in your element to either
sass
or scss
.
Step 5: After you've done that go to the terminal/console and install sass-loader
with:
npm install sass-loader node-sass webpack --save-dev
Step 6: Then run npm run dev
and it should work.
Why does this work?
Libraries
I dug around a bit and it turns out sass-loader uses node-sass which has some options such asincludePaths
one mentioned by @22samuelk. IncludePaths tells node-sass or rather the underlying library LibSass to include sass files from that directory/path.
Vue
Sass-loader options
By default Vue expects your assets to be in your projects src/assets
folder (correct me if I'm wrong). You can however use ~
to indicat you want to start at your projects root which would look like `~/node_modules/@material/smth/mdc-smth.scss.
Now if you want your sass-loader to use something other than those options you need to explicitly tell them.
Hence path.resolve(__dirname, '../node_modules'
since the utils
file is in ./build
and you need to use an absolute path for sass-loader
to understand where to look.
Vue-loader config
This is not really specific to the question but the vue-loader config defined in vue-loader.conf.js
works as follows:
It uses the map returned by cssLoaders()
to build the loaders expected by webpack.
The returned map ({key:value}
) is then used by providing key
as a file extension used in test:
for a loader object. The value
is used as the loader object.
Which would like like this:
{
test: /\.(key)$/,
use: [
{
loader: '//ld//-loader',
options: {
/*Options passed to generateLoaders('//ld//', options)*/
},
},
],
}
Where key
is the file extention. In this case that would be either sass
or scss
. And //ld//
is the loader you which to use. Which is shown in Step 3 as 'sass'
.
Hopefully this clears up some stuff. Took me a while because I just started using Vue.