Add a domain to a project

//native

type Vercel = {

  token: string;

};

/**

 * Add a domain to a project

 * Add a domain to the project by passing its domain name and by specifying the project by either passing the project `id` or `name` in the URL. If the domain is not yet verified to be used on this project, the request will return `verified = false`, and the domain will need to be verified according to the `verification` challenge via `POST /projects/:idOrName/domains/:domain/verify`. If the domain already exists on the project, the request will fail with a `400` status code.

 */

export async function main(

  auth: Vercel,

  idOrName: string,

  teamId: string | undefined,

  slug: string | undefined,

  body: {

    name: string;

    gitBranch?: string;

    customEnvironmentId?: string;

    redirect?: string;

    redirectStatusCode?: 301 | 302 | 307 | 308;

  },

) {

  const url = new URL(

    `https://api.vercel.com/v10/projects/${idOrName}/domains`,

  );

  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: "POST",

    headers: {

      "Content-Type": "application/json",

      Authorization: "Bearer " + auth.token,

    },

    body: JSON.stringify(body),

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}