48 lines
2.6 KiB
Markdown
48 lines
2.6 KiB
Markdown
# vue-style-loader [](https://circleci.com/gh/vuejs/vue-loader/tree/master) [](https://www.npmjs.com/package/vue-style-loader)
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This is a fork based on [style-loader](https://github.com/webpack/style-loader). Similar to `style-loader`, you can chain it after `css-loader` to dynamically inject CSS into the document as style tags. However, since this is included as a dependency and used by default in `vue-loader`, in most cases you don't need to configure this loader yourself.
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## Options
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- **manualInject** (3.1.0+):
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Type: `boolean`. When importing the style from a non-vue-file, by default the style is injected as a side effect of the import. When `manualInject` is true, the imported style object exposes a `__inject__` method, which can then be called manually at appropriate timing. If called on the server, the method expects one argument which is the `ssrContext` to attach styles to.
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``` js
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import styles from 'styles.scss'
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export default {
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beforeCreate() { // or create a mixin for this purpose
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if(styles.__inject__) {
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styles.__inject__(this.$ssrContext)
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}
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}
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render() {
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return <div class={styles.heading}>Hello World</div>
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}
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}
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```
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Note this behavior is enabled automatically when `vue-style-loader` is used on styles imported within a `*.vue` file. The option is only exposed for advanced usage.
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- **ssrId** (3.1.0+):
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Type: `boolean`. Add `data-vue-ssr-id` attribute to injected `<style>` tags even when not in Node.js. This can be used with pre-rendering (instead of SSR) to avoid duplicate style injection on hydration.
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## Differences from `style-loader`
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### Server-Side Rendering Support
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When bundling with `target: 'node'`, the styles in all rendered components are collected and exposed on the Vue render context object as `context.styles`, which you can simply inline into your markup's `<head>`. If you are building a Vue SSR app, you probably should use this loader for CSS imported from JavaScript files too.
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### Misc
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- Does not support url mode and reference counting mode. Also removed `singleton` and `insertAt` query options. It always automatically pick the style insertion mechanism that makes most sense. If you need these capabilities you should probably use the original `style-loader` instead.
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- Fixed the issue that root-relative URLs are interpreted against chrome:// urls and make source map URLs work for injected `<style>` tags in Chrome.
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## License
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MIT
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