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import { nodeFileTrace } from '@vercel/nft';
import { relative as relativePath } from 'node:path';
import { fileURLToPath } from 'node:url';
import { copyFilesToFunction } from './fs.js';
export async function copyDependenciesToFunction({
entry,
outDir,
includeFiles,
excludeFiles,
}: {
entry: URL;
outDir: URL;
includeFiles: URL[];
excludeFiles: URL[];
}): Promise<{ handler: string }> {
const entryPath = fileURLToPath(entry);
// Get root of folder of the system (like C:\ on Windows or / on Linux)
let base = entry;
while (fileURLToPath(base) !== fileURLToPath(new URL('../', base))) {
base = new URL('../', base);
}
const result = await nodeFileTrace([entryPath], {
base: fileURLToPath(base),
});
for (const error of result.warnings) {
if (error.message.startsWith('Failed to resolve dependency')) {
const [, module, file] = /Cannot find module '(.+?)' loaded from (.+)/.exec(error.message)!;
// The import(astroRemark) sometimes fails to resolve, but it's not a problem
if (module === '@astrojs/') continue;
if (entryPath === file) {
console.warn(
`[@astrojs/vercel] The module "${module}" couldn't be resolved. This may not be a problem, but it's worth checking.`
);
} else {
console.warn(
`[@astrojs/vercel] The module "${module}" inside the file "${file}" couldn't be resolved. This may not be a problem, but it's worth checking.`
);
}
} else {
throw error;
}
}
const commonAncestor = await copyFilesToFunction(
[...result.fileList].map((file) => new URL(file, base)).concat(includeFiles),
outDir,
excludeFiles
);
return {
// serverEntry location inside the outDir
handler: relativePath(commonAncestor, entryPath),
};
}
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