Function pickHeader

packages/server/src/routes/fs.ts:654–661

(
  headers: Record<string, string | string[] | undefined>,
  name: string,
)

}

function pickHeader(
  headers: Record<string, string | string[] | undefined>,
  name: string,
): string | undefined {
  const v = headers[name];
  if (v === undefined) return undefined;
  return Array.isArray(v) ? v[0] : v;
}

function parseRangeHeader(
  raw: string | undefined,