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import { readFileSync, writeFileSync } from 'node:fs';
import { fileURLToPath } from 'node:url';
import { rollup } from 'rollup';
import { nodeResolve } from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import json from '@rollup/plugin-json';
const files = fileURLToPath(new URL('./files', import.meta.url).href);
/** @type {import('./index.js').default} */
export default function (opts = {}) {
const { out = 'build', precompress, envPrefix = '' } = opts;
return {
name: '@sveltejs/adapter-node',
async adapt(builder) {
const tmp = builder.getBuildDirectory('adapter-node');
builder.rimraf(out);
builder.rimraf(tmp);
builder.mkdirp(tmp);
builder.log.minor('Copying assets');
builder.writeClient(`${out}/client${builder.config.kit.paths.base}`);
builder.writePrerendered(`${out}/prerendered${builder.config.kit.paths.base}`);
if (precompress) {
builder.log.minor('Compressing assets');
await Promise.all([
builder.compress(`${out}/client`),
builder.compress(`${out}/prerendered`)
]);
}
builder.log.minor('Building server');
builder.writeServer(tmp);
writeFileSync(
`${tmp}/manifest.js`,
`export const manifest = ${builder.generateManifest({ relativePath: './' })};\n\n` +
`export const prerendered = new Set(${JSON.stringify(builder.prerendered.paths)});\n`
);
const pkg = JSON.parse(readFileSync('package.json', 'utf8'));
// we bundle the Vite output so that deployments only need
// their production dependencies. Anything in devDependencies
// will get included in the bundled code
const bundle = await rollup({
input: {
index: `${tmp}/index.js`,
manifest: `${tmp}/manifest.js`
},
external: [
// dependencies could have deep exports, so we need a regex
...Object.keys(pkg.dependencies || {}).map((d) => new RegExp(`^${d}(\\/.*)?$`))
],
plugins: [
nodeResolve({
preferBuiltins: true,
exportConditions: ['node']
}),
// @ts-ignore https://github.com/rollup/plugins/issues/1329
commonjs({ strictRequires: true }),
// @ts-ignore https://github.com/rollup/plugins/issues/1329
json()
]
});
await bundle.write({
dir: `${out}/server`,
format: 'esm',
sourcemap: true,
chunkFileNames: 'chunks/[name]-[hash].js'
});
builder.copy(files, out, {
replace: {
ENV: './env.js',
HANDLER: './handler.js',
MANIFEST: './server/manifest.js',
SERVER: './server/index.js',
SHIMS: './shims.js',
ENV_PREFIX: JSON.stringify(envPrefix)
}
});
}
};
}
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