How to import CSS-Modules correctly with Nuxt? - vue.js

Question

I'm using CSS Modules with Nuxt and have run into some issues when trying to import a stylesheet in my js. If I import my stylesheet directly into the...
<style module>
#import './index.css';
</style>
...everything works as expected. In my particular case I need to run a computed property to choose between two different stylesheets so instead of importing through the <style module> I need to import into <script> and implement the styles like so:
<script>
import foo from './index.css'
export default {
computed: {
styles() {
return foo
}
}
}
</script>
When implementing this on vue everything works great and I get a style object returned. Nuxt however is returning an empty object and none of my styles render correctly.
I'm activating CSS-Modules in my nuxt.config.js file like this:
export default {
...
loaders: {
css: {
modules: true
}
}
...
}
Is this an issue with Nuxt SSR? I've been looking for the root cause/solution but haven't had much luck in my search.
Update
After taking ivandata's advice and adding to my build script this code:
export default {
....
build: {
extend (config, ctx) {
const cssLoader = config.module.rules.find(rule => {
return rule.test.toString() === '/\\.css$/i';
});
delete cssLoader.oneOf[0].resourceQuery;
...
}
}
}
CSS modules appear to be working but a new problem popped up which is that now the project doesn't understand any vue-component styles that are not css-modules. After doing a bit of research I found out that the resourceQuery is telling the loader what type of file to apply the loader options to.
I've tried digging through the style loader on vue.cli 3 and comparing the differences to Nuxt. I removed ivandata's snippit and I tried matching the loaders of vue and nuxt but the problem still persisted.
Here is what is happening visually when between enabling and disabling ivandata's code:
Disabled
Enabled
And here is a code snippet of what is going on in my project:
<template>
<section :class="style.container">
<h1>hey</h1>
<h2 class="test">hey</h2>
</section>
</template>
<script>
import style from './index.css'
export default {
computed: {
style() {
return style
}
}
}
</script>
<style>
h1 {
font-size: 100px;
}
.test {
font-size: 100px;
}
</style>
So as you can see if I have the resourceQuery in the css-loader my javascript import's of css do not work but all vue-component styles worked as normal. Once I remove the resourceQuery the js imported stylesheet works but the vue-template style classes no longer work. I don't think the solution lies in removing resourceQuery and I'm curious if this has something to do with another loader entirely. I've dug quite a bit through the vue.cli 3 loaders and can't see anything that distinctly sticks out to me.

Answer 1

Ok this another way. Leave your old code. Remove my code and add ?module to import file path:
<script>
import foo from './index.css?module'
export default {
computed: {
styles() {
return foo
}
}
}
</script>
I was wrong. resourceQuery option is used to test against the query section of a request string.

Answer 2

You don't need activate css-modules in nuxt, they active by default.
Nuxt.js use vue-style-loader for load styles.
https://vue-loader.vuejs.org/guide/css-modules.html#opt-in-usage
By default, all styles loading from style tag with module attribute, because style loader use resourceQuery /module/ in oneOf rule. So if remove this property nuxt will load styles as you want.
export default {
....
build: {
extend (config, ctx) {
const cssLoader = config.module.rules.find(rule => {
return rule.test.toString() === '/\\.css$/i';
});
delete cssLoader.oneOf[0].resourceQuery;
...
}
}
}

Answer 3

nuxt version: 2.0.0.
You need to do nothing but exchange scoped to module,such as:
<template>
<div :class="$style.red">TEST</div>
</template>
<style module>
.red{color:red;}
</style>