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import type { AstroAdapter, AstroConfig, AstroIntegration } from 'astro';
import { emptyDir, getVercelOutput, writeJson } from '../lib/fs.js';
import { getRedirects } from '../lib/redirects.js';
const PACKAGE_NAME = '@astrojs/vercel/static';
function getAdapter(): AstroAdapter {
return { name: PACKAGE_NAME };
}
export interface VercelStaticConfig {
analytics?: boolean;
}
export default function vercelStatic({ analytics }: VercelStaticConfig = {}): AstroIntegration {
let _config: AstroConfig;
return {
name: '@astrojs/vercel',
hooks: {
'astro:config:setup': ({ command, config, injectScript }) => {
if (command === 'build' && analytics) {
injectScript('page', 'import "@astrojs/vercel/analytics"');
}
config.outDir = new URL('./static/', getVercelOutput(config.root));
config.build.format = 'directory';
},
'astro:config:done': ({ setAdapter, config }) => {
setAdapter(getAdapter());
_config = config;
if (config.output === 'server') {
throw new Error(`${PACKAGE_NAME} should be used with output: 'static'`);
}
},
'astro:build:start': async () => {
// Ensure to have `.vercel/output` empty.
// This is because, when building to static, outDir = .vercel/output/static/,
// so .vercel/output itself won't get cleaned.
await emptyDir(getVercelOutput(_config.root));
},
'astro:build:done': async ({ routes }) => {
// Output configuration
// https://vercel.com/docs/build-output-api/v3#build-output-configuration
await writeJson(new URL(`./config.json`, getVercelOutput(_config.root)), {
version: 3,
routes: [...getRedirects(routes, _config), { handle: 'filesystem' }],
});
},
},
};
}
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