Download a cache artifact

//native

type Vercel = {

  token: string;

};

/**

 * Download a cache artifact

 * Downloads a cache artifact indentified by its `hash` specified on the request path. The artifact is downloaded as an octet-stream. The client should verify the content-length header and response body.

 */

export async function main(

  auth: Vercel,

  hash: string,

  teamId: string | undefined,

  slug: string | undefined,

  x_artifact_client_ci?: string,

  x_artifact_client_interactive?: string,

) {

  const url = new URL(`https://api.vercel.com/v8/artifacts/${hash}`);

  for (const [k, v] of [

    ["teamId", teamId],

    ["slug", slug],

  ]) {

    if (v !== undefined && v !== "" && k !== undefined) {

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "GET",

    headers: {

      ...(x_artifact_client_ci

        ? { "x-artifact-client-ci": x_artifact_client_ci }

        : {}),

      ...(x_artifact_client_interactive

        ? { "x-artifact-client-interactive": x_artifact_client_interactive }

        : {}),

      Authorization: "Bearer " + auth.token,

    },

    body: undefined,

  });

  if (!response.ok) {

    const text = await response.text();

    throw new Error(`${response.status} ${text}`);

  }

  return await response.json();

}