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import type { AstroAdapter, AstroConfig, AstroIntegration } from 'astro';
import esbuild from 'esbuild';
import { relative as relativePath } from 'node:path';
import { fileURLToPath } from 'node:url';
import {
copyFilesToFunction,
getFilesFromFolder,
getVercelOutput,
removeDir,
writeJson,
} from '../lib/fs.js';
import { getRedirects } from '../lib/redirects.js';
const PACKAGE_NAME = '@astrojs/vercel/edge';
function getAdapter(): AstroAdapter {
return {
name: PACKAGE_NAME,
serverEntrypoint: `${PACKAGE_NAME}/entrypoint`,
exports: ['default'],
};
}
export interface VercelEdgeConfig {
includeFiles?: string[];
analytics?: boolean;
}
export default function vercelEdge({
includeFiles = [],
analytics,
}: VercelEdgeConfig = {}): AstroIntegration {
let _config: AstroConfig;
let buildTempFolder: URL;
let functionFolder: URL;
let serverEntry: string;
return {
name: PACKAGE_NAME,
hooks: {
'astro:config:setup': ({ command, config, updateConfig, injectScript }) => {
if (command === 'build' && analytics) {
injectScript('page', 'import "@astrojs/vercel/analytics"');
}
const outDir = getVercelOutput(config.root);
updateConfig({
outDir,
build: {
serverEntry: 'entry.mjs',
client: new URL('./static/', outDir),
server: new URL('./dist/', config.root),
},
});
},
'astro:config:done': ({ setAdapter, config }) => {
setAdapter(getAdapter());
_config = config;
buildTempFolder = config.build.server;
functionFolder = new URL('./functions/render.func/', config.outDir);
serverEntry = config.build.serverEntry;
if (config.output === 'static') {
throw new Error(`
[@astrojs/vercel] \`output: "server"\` is required to use the edge adapter.
`);
}
},
'astro:build:setup': ({ vite, target }) => {
if (target === 'server') {
vite.resolve ||= {};
vite.resolve.alias ||= {};
const aliases = [{ find: 'react-dom/server', replacement: 'react-dom/server.browser' }];
if (Array.isArray(vite.resolve.alias)) {
vite.resolve.alias = [...vite.resolve.alias, ...aliases];
} else {
for (const alias of aliases) {
(vite.resolve.alias as Record<string, string>)[alias.find] = alias.replacement;
}
}
vite.ssr ||= {};
vite.ssr.target ||= 'webworker';
}
},
'astro:build:done': async ({ routes }) => {
const entry = new URL(serverEntry, buildTempFolder);
const generatedFiles = await getFilesFromFolder(buildTempFolder);
const entryPath = fileURLToPath(entry);
await esbuild.build({
target: 'es2020',
platform: 'browser',
entryPoints: [entryPath],
outfile: entryPath,
allowOverwrite: true,
format: 'esm',
bundle: true,
minify: true,
});
// Copy entry and other server files
const commonAncestor = await copyFilesToFunction(
[...generatedFiles, ...includeFiles.map((file) => new URL(file, _config.root))],
functionFolder
);
// Remove temporary folder
await removeDir(buildTempFolder);
// Edge function config
// https://vercel.com/docs/build-output-api/v3#vercel-primitives/edge-functions/configuration
await writeJson(new URL(`./.vc-config.json`, functionFolder), {
runtime: 'edge',
entrypoint: relativePath(commonAncestor, entryPath),
});
// Output configuration
// https://vercel.com/docs/build-output-api/v3#build-output-configuration
await writeJson(new URL(`./config.json`, _config.outDir), {
version: 3,
routes: [
...getRedirects(routes, _config),
{ handle: 'filesystem' },
{ src: '/.*', dest: 'render' },
],
});
},
},
};
}
|
