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April 8, 2022 15:43
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Sample project how to load theme at dev time
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| <title></title> | |
| <script type="module"> | |
| import "@theme/default"; | |
| </script> | |
| </head> | |
| <body> | |
| hello! | |
| </body> | |
| </html> |
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| { | |
| "name": "vite-resolve-dev-test", | |
| "version": "1.0.0", | |
| "main": "index.js", | |
| "license": "MIT", | |
| "devDependencies": { | |
| "vite": "^2.9.1" | |
| } | |
| } |
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| body { | |
| color: var(--fg-color); | |
| background-color: var(--bg-color); | |
| } |
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| const {defineConfig} = require('vite'); | |
| const path = require('path'); | |
| const virtualModuleId = '@theme/' | |
| const resolvedVirtualModuleId = '\0' + virtualModuleId; | |
| const examplePlugin = () => { | |
| return { | |
| name: 'test-css-import', | |
| async resolveId(id, importer, options) { | |
| if (id.startsWith(virtualModuleId)) { | |
| return `\0` + id; | |
| } | |
| }, | |
| async load(id) { | |
| if (id.startsWith(resolvedVirtualModuleId)) { | |
| let [theme, variant, file] = id.substr(resolvedVirtualModuleId.length).split("/"); | |
| if (theme === "default") { | |
| theme = "foo"; | |
| } | |
| if (!variant || variant === "default") { | |
| variant = "light"; | |
| } | |
| if (!file) { | |
| file = "index.js"; | |
| } | |
| switch (file) { | |
| case "index.js": | |
| return `import "${path.resolve(`./theme-${theme}.css`)}";` + | |
| `import "@theme/${theme}/${variant}/variables.css"`; | |
| case "variables.css": | |
| return `:root {--fg-color: ${ variant === "light" ? "green" : "lightgreen"}; --bg-color: ${ variant === "light" ? "white" : "black"};}`; | |
| } | |
| } | |
| } | |
| } | |
| } | |
| export default defineConfig(({mode}) => { | |
| return { | |
| plugins: [examplePlugin()], | |
| }; | |
| }); |
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