Get a tree

type Github = {

  token: string;

};

/**

 * Get a tree

 * Returns a single tree using the SHA1 value for that tree.

If `truncated` is `true` in the response then the number of items in the `tree` array exceeded our maximum limit. If you need to fetch more items, use the non-recursive method of fetching trees, and fetch one sub-tree at a time.

**Note**: The limit for the `tree` array is 100,000 entries with a maximum size of 7 MB when using the `recursive` parameter.

 */

export async function main(

  auth: Github,

  owner: string,

  repo: string,

  tree_sha: string,

  recursive: string | undefined

) {

  const url = new URL(

    `https://api.github.com/repos/${owner}/${repo}/git/trees/${tree_sha}`

  );

  for (const [k, v] of [["recursive", recursive]]) {

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

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "GET",

    headers: {

      Authorization: "Bearer " + auth.token,

    },

    body: undefined,

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}