Function createZip

packages/build-utils/src/lambda.ts:492–526

(files: Files)

}

export async function createZip(files: Files): Promise<Buffer> {
  const names = Object.keys(files).sort();

  const symlinkTargets = new Map<string, string>();
  for (const name of names) {
    const file = files[name];
    if (file.mode && isSymbolicLink(file.mode) && file.type === 'FileFsRef') {
      const symlinkTarget = await readlink(file.fsPath);
      symlinkTargets.set(name, symlinkTarget);
    }
  }

  const zipFile = new ZipFile();
  const zipBuffer = await new Promise<Buffer>((resolve, reject) => {
    for (const name of names) {
      const file = files[name];
      const opts = { mode: file.mode, mtime };
      const symlinkTarget = symlinkTargets.get(name);
      if (typeof symlinkTarget === 'string') {
        zipFile.addBuffer(Buffer.from(symlinkTarget, 'utf8'), name, opts);
      } else if (file.mode && isDirectory(file.mode)) {
        zipFile.addEmptyDirectory(name, opts);
      } else {
        const stream = file.toStream();
        stream.on('error', reject);
        zipFile.addReadStream(stream, name, opts);
      }
    }

    zipFile.end();
    streamToBuffer(zipFile.outputStream).then(resolve).catch(reject);
  });

  return zipBuffer;
}

export async function getLambdaOptionsFromFunction({
  sourceFile,