mirror of
https://github.com/gromlab-ru/svg-sprites.git
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133 lines
3.2 KiB
Markdown
133 lines
3.2 KiB
Markdown
# SVG Sprite for React with Webpack 5
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A quick guide to creating an SVG sprite in a React application built with Webpack 5.
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## Generate the sprite
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Choose a folder for the sprite. This example uses `assets/app-icons`, with source SVG files, including the `check.svg` used below, in `assets/svg-icons`.
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Create `assets/app-icons/svg-sprite.config.json`:
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```json
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{
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"mode": "react@webpack",
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"name": "app",
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"input": "../svg-icons/**/*.svg"
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}
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```
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The `input` path is relative to the config folder.
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Add generation commands to `package.json`. Generated files are excluded from Git by default, so `predev` and `prebuild` rebuild the sprite before every start and build:
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```json
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{
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"scripts": {
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"sprites": "npx --yes @gromlab/svg-sprites assets/app-icons/svg-sprite.config.json",
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"predev": "npm run sprites",
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"dev": "webpack serve --mode development",
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"prebuild": "npm run sprites",
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"build": "webpack --mode production"
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}
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}
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```
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## Use the sprite
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The value `name: "app"` creates the React component `AppIcon`.
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Create the entry point `assets/app-icons/index.ts`:
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```ts
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export * from './.svg-sprite/index.js'
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```
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Use the component in your application:
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```tsx
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import { AppIcon } from '../assets/app-icons'
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export function SaveIcon() {
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return (
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<AppIcon
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icon="check"
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width={24}
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height={24}
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role="img"
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aria-label="Done"
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style={{
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color: '#334155',
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'--icon-color-2': '#f59e0b',
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}}
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/>
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)
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}
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```
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The `icon` prop accepts source SVG file names without the extension. A monochrome icon inherits `color`, while colors in a multicolor icon are overridden with `--icon-color-N`.
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The component uses CSS Modules. If the project does not process them yet, install the loaders:
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```bash
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npm install --save-dev style-loader css-loader
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```
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Then add a rule with a default export to `webpack.config.js`:
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```js
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{
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test: /\.module\.css$/i,
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use: [
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'style-loader',
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{
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loader: 'css-loader',
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options: { modules: { namedExport: false } },
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},
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],
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}
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```
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Webpack 5 automatically adds `sprite.svg` to the production build.
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## Debug and preview
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Viewer displays all icons on one page so you can check their rendering, change colors, and inspect the related CSS variables. It is only needed for development.
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Install Viewer:
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```bash
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npm install --save-dev @gromlab/svg-sprites
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```
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Create the entry `src/svg-sprite-debug.tsx`:
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```tsx
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import { createRoot } from 'react-dom/client'
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import { SpriteViewer } from '@gromlab/svg-sprites/react'
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const sources = [
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() => import('../assets/app-icons/.svg-sprite/svg-sprite.manifest.js'),
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] as const
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const container = document.createElement('div')
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document.body.append(container)
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createRoot(container).render(
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<SpriteViewer sources={sources} title="Project icons" />,
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)
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```
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Add the script to the main entry only in development mode. Keep the rest of your `webpack.config.js` settings:
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```js
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export default (_env, argv) => ({
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// Other Webpack settings.
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entry: [
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'./src/main.tsx',
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...(argv.mode === 'development' ? ['./src/svg-sprite-debug.tsx'] : []),
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],
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})
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```
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Run `npm run dev`. Viewer appears on the application's main page and is not included in the production build.
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