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|
import type { AstroIntegration } from 'astro';
import { fileURLToPath } from 'url';
import path from 'path';
import tailwindPlugin from 'tailwindcss';
import type { TailwindConfig } from 'tailwindcss/tailwind-config';
import resolveConfig from 'tailwindcss/resolveConfig.js';
import autoprefixerPlugin from 'autoprefixer';
import load from '@proload/core';
function getDefaultTailwindConfig(srcUrl: URL): TailwindConfig {
return resolveConfig({
theme: {
extend: {},
},
plugins: [],
content: [path.join(fileURLToPath(srcUrl), `**`, `*.{astro,html,js,jsx,svelte,ts,tsx,vue}`)],
});
}
async function getUserConfig(projectRoot: URL, configPath?: string) {
const resolvedProjectRoot = fileURLToPath(projectRoot);
let userConfigPath: string | undefined;
if (configPath) {
const configPathWithLeadingSlash = /^\.*\//.test(configPath) ? configPath : `./${configPath}`;
userConfigPath = fileURLToPath(new URL(configPathWithLeadingSlash, projectRoot));
}
return await load('tailwind', { mustExist: false, cwd: resolvedProjectRoot, filePath: userConfigPath });
}
type TailwindOptions =
| {
config?: {
/**
* Path to your tailwind config file
* @default 'tailwind.config.js'
*/
path?: string;
/**
* Apply Astro's default Tailwind config as a preset
* This is recommended to enable Tailwind across all components and Astro files
* @default true
*/
applyAstroPreset?: boolean;
};
}
| undefined;
export default function tailwindIntegration(options: TailwindOptions): AstroIntegration {
const applyAstroConfigPreset = options?.config?.applyAstroPreset ?? true;
const customConfigPath = options?.config?.path;
return {
name: '@astrojs/tailwind',
hooks: {
'astro:config:setup': async ({ config, injectScript }) => {
// Inject the Tailwind postcss plugin
const userConfig = await getUserConfig(config.projectRoot, customConfigPath);
if (customConfigPath && !userConfig?.value) {
throw new Error(`Could not find a Tailwind config at ${JSON.stringify(customConfigPath)}. Does the file exist?`);
}
const tailwindConfig: TailwindConfig = (userConfig?.value as TailwindConfig) ?? getDefaultTailwindConfig(config.src);
if (applyAstroConfigPreset && userConfig?.value) {
// apply Astro config as a preset to user config
// this avoids merging or applying nested spread operators ourselves
tailwindConfig.presets = [getDefaultTailwindConfig(config.src), ...(tailwindConfig.presets || [])];
}
config.styleOptions.postcss.plugins.push(tailwindPlugin(tailwindConfig));
config.styleOptions.postcss.plugins.push(autoprefixerPlugin);
// Inject the Tailwind base import
injectScript('page-ssr', `import '@astrojs/tailwind/base.css';`);
},
},
};
}
|
