TypeScript types appear to be incorrect for paginate() on apps.listReposAccessibleToInstallation

[reececomo]

Hey there.

When running await paginate(...) on apps.listReposAccessibleToInstallation, the TypeScript inferred data type is not correct.

  // context is an Octokit with an installation.id

  const repos = await context.paginate(context.apps.listReposAccessibleToInstallation, {
    per_page: 100,
  });

  // TypeScript compiler/VSCode sees `repos` as:
  // {
  //   total_count: number,
  //   repositories: { id: number,  /*...*/ }[ ],
  //   repository_selection: ?string
  // }

But really at runtime it contains repositories data array:

  console.log(repos)
  // [
  //   { id: 123,  /*...*/ },
  //   { id: 456,  /*...*/ }
  // ]

Workaround

  // FIXME: Have been doing this as a workaround.
  const installationRepos = repos.repositories ?? repos;

  installationRepos.forEach(/*...*/);

[gr2m]

Hmm I have a test for this exact endpoint and TS compiles without error:

plugin-paginate-rest.js/test/validate-typescript.ts

Lines 173 to 187 in 184262e

	// https://developer.github.com/v3/apps/installations/#list-repositories
	export async function knownRouteWithNamespacedResponse() {
	const results = await octokit.paginate("GET /installation/repositories");
	for (const result of results) {
	console.log(result.owner.login);
	}
	}
	export async function knownRouteWithNamespacedResponseIterator() {
	for await (const response of octokit.paginate.iterator(
	"GET /installation/repositories"
	)) {
	console.log(response.data[0].owner.login);
	}
	}

Might this be a problem with a different TS config or TS version?

Note that we do create a union between the actual endpoint types which is { total_count, repositories, ... } and our normalized format that we do within @octokit/plugin-paginate-rest which is { ...repositoryProperties}[]. We do that because some of the returned properties from the API cannot be derived from another place, so you basically get an array with custom properties such as .total_count

[gr2m]

closing due to inactivity

[reececomo]

Might this be a problem with a different TS config or TS version?

Possibly! I believe I was on latest, not sure if VSCode pulls in a different bin though 👍

Thanks for having a look @gr2m

[nodify-at]

Hi,

we have exact same issue.

Code:

      repos = await this.appInstallsClient.paginate(
        this.appInstallsClient.apps.listReposAccessibleToInstallation,
        {
          per_page: 100,
          headers: {
            'If-None-Match': this.reposResponse?.headers.etag,
          },
        },
        response =>
          response.data.filter(repository => isActiveRepository(repository)),
      );

Typescript expects an object ( { repositories, total_count, ..} ).
Typescript Version: ^4.4.4

[JamieMagee]

I am also seeing this issue. @gr2m can you reopen please?

[gr2m]

Note that @octokit is currently unmaintained, subscribe to octokit/octokit.js#620 (comment) for updates

[Shegox]

I saw the same problem today, after updating to probot@12.2.2 and typescript@4.6.3. Typescript complained about that it's no longer an array with .length attribute, but rather the object.

Anyway @reececomo thanks a lot for providing a workaround. That works flawless 👍

[reececomo]

No problem @Shegox! Sorry it has to be this way 😓

[wolfy1339]

I can confirm that this is happening to me locally when cloning this repo in VSCode with TypeScript 5.0.4, but not when running the test:ts script with the same TypeScript version.

The type of the returned value for the pagination is not an array.

plugin-paginate-rest.js/src/types.ts

Lines 178 to 189 in 9240b2f

	/**
	* Paginate a request using an endpoint method and parameters
	*
	* @param {string} request Request method (`octokit.request` or `@octokit/request`)
	* @param {object} parameters? URL, query or body parameters, as well as `headers`, `mediaType.format`, `request`, or `baseUrl`.
	*/
	<R extends OctokitTypes.RequestInterface>(
	request: R,
	parameters?: Parameters<R>[0]
	): Promise<
	NormalizeResponse<OctokitTypes.GetResponseTypeFromEndpointMethod<R>>["data"]
	>;

Maybe the returned type should be Promise<NormalizeResponse<OctokitTypes.GetResponseTypeFromEndpointMethod<R>>["data"][]>;

[martincostello]

I've stumbled into this issue as well. If it helps anyone else until this is resolved, I'm doing this as a workaround:

// N.B. I've only included the properties I happen to use here.
type InstallationRepository = {
  name: string;
  full_name: string;
  owner: {
    login: string;
  };
  default_branch: string;
  archived: boolean;
  fork: boolean;
  html_url: string;
  is_template: boolean;
  topics: string[];
};

const repositories = (await octokit.paginate(
  octokit.rest.apps.listReposAccessibleToInstallation,
  { per_page: 100 }
)) as unknown as InstallationRepository[];

[Siumauricio]

I have the same issue i did this to solve

      const repositories = (await octokit.paginate(
        octokit.rest.apps.listReposAccessibleToInstallation,
      )) as unknown as Awaited<
        ReturnType<typeof octokit.rest.apps.listReposAccessibleToInstallation>
      >["data"]["repositories"];

[kamilogorek]

For completeness, other than listReposAccessibleToInstallation, another method that is affected by this issue is listInstallationsForAuthenticatedUser.