80 lines
2.6 KiB
TypeScript
80 lines
2.6 KiB
TypeScript
import type { AstroAdapter, AstroConfig, AstroIntegration } from 'astro';
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import { writeJson, getVercelOutput } from '../lib/fs.js';
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import { copyDependenciesToFunction } from '../lib/nft.js';
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import { getRedirects } from '../lib/redirects.js';
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const PACKAGE_NAME = '@astrojs/vercel/serverless';
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function getAdapter(): AstroAdapter {
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return {
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name: PACKAGE_NAME,
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serverEntrypoint: `${PACKAGE_NAME}/entrypoint`,
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exports: ['default'],
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};
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}
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export default function vercelEdge(): AstroIntegration {
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let _config: AstroConfig;
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let functionFolder: URL;
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let serverEntry: string;
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return {
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name: PACKAGE_NAME,
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hooks: {
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'astro:config:setup': ({ config }) => {
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config.outDir = getVercelOutput(config.root);
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},
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'astro:config:done': ({ setAdapter, config }) => {
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setAdapter(getAdapter());
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_config = config;
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},
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'astro:build:start': async ({ buildConfig }) => {
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if (String(process.env.ENABLE_VC_BUILD) !== '1') {
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throw new Error(
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`The enviroment variable "ENABLE_VC_BUILD" was not found. Make sure you have it set to "1" in your Vercel project.\nLearn how to set enviroment variables here: https://vercel.com/docs/concepts/projects/environment-variables`
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);
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}
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buildConfig.serverEntry = serverEntry = 'entry.js';
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buildConfig.client = new URL('./static/', _config.outDir);
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buildConfig.server = functionFolder = new URL('./functions/render.func/', _config.outDir);
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},
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'astro:build:done': async ({ routes }) => {
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// Copy necessary files (e.g. node_modules/)
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await copyDependenciesToFunction(_config.root, functionFolder, serverEntry);
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// Enable ESM
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// https://aws.amazon.com/blogs/compute/using-node-js-es-modules-and-top-level-await-in-aws-lambda/
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await writeJson(new URL(`./package.json`, functionFolder), {
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type: 'module',
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});
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// Serverless function config
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// https://vercel.com/docs/build-output-api/v3#vercel-primitives/serverless-functions/configuration
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await writeJson(new URL(`./.vc-config.json`, functionFolder), {
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runtime: getRuntime(),
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handler: serverEntry,
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launcherType: 'Nodejs',
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});
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// Output configuration
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// https://vercel.com/docs/build-output-api/v3#build-output-configuration
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await writeJson(new URL(`./config.json`, _config.outDir), {
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version: 3,
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routes: [
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...getRedirects(routes, _config),
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{ handle: 'filesystem' },
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{ src: '/.*', dest: 'render' },
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],
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});
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},
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},
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};
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}
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function getRuntime() {
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const version = process.version.slice(1); // 'v16.5.0' --> '16.5.0'
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const major = version.split('.')[0]; // '16.5.0' --> '16'
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return `nodejs${major}.x`;
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}
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