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import type { AstroIntegration, AstroRenderer } from 'astro';
import { svelte } from '@sveltejs/vite-plugin-svelte';
import preprocess from 'svelte-preprocess';
import type { Options } from '@sveltejs/vite-plugin-svelte';
function getRenderer(): AstroRenderer {
return {
name: '@astrojs/svelte',
clientEntrypoint: '@astrojs/svelte/client.js',
serverEntrypoint: '@astrojs/svelte/server.js',
};
}
function getViteConfiguration(isDev: boolean, options?: Options | OptionsCallback) {
const defaultOptions = {
emitCss: true,
compilerOptions: { dev: isDev, hydratable: true },
preprocess: [
preprocess({
less: true,
sass: { renderSync: true },
scss: { renderSync: true },
stylus: true,
typescript: true,
}),
],
};
let resolvedOptions: Partial<Options>;
if (!options) {
resolvedOptions = defaultOptions;
} else if (typeof options === 'function') {
resolvedOptions = options(defaultOptions);
} else {
resolvedOptions = {
...options,
...defaultOptions,
compilerOptions: {
...options.compilerOptions,
// Always use dev and hydratable from defaults
...defaultOptions.compilerOptions,
},
// Ignore default preprocessor if the user provided their own
preprocess: options.preprocess ?? defaultOptions.preprocess,
};
}
return {
optimizeDeps: {
include: ['@astrojs/svelte/client.js', 'svelte', 'svelte/internal'],
exclude: ['@astrojs/svelte/server.js'],
},
plugins: [svelte(resolvedOptions)],
};
}
type OptionsCallback = (defaultOptions: Options) => Options;
export default function (options?: Options | OptionsCallback): AstroIntegration {
return {
name: '@astrojs/svelte',
hooks: {
// Anything that gets returned here is merged into Astro Config
'astro:config:setup': ({ command, updateConfig, addRenderer }) => {
addRenderer(getRenderer());
updateConfig({ vite: getViteConfiguration(command === 'dev', options) });
},
},
};
}
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