Derive the API client type from @actions/github

`ApiClient` was hand-composed from `Octokit`, `Api` and `PaginateInterface`, imported directly from separately versioned Octokit packages. That asserted a shape matching what `@actions/github` actually returns, which held only while the versions happened to agree.

`@octokit/plugin-rest-endpoint-methods` v18 adds twelve Actions cache-limit methods. `@actions/github` still depends on `^17.0.0`, so the client it constructs no longer satisfies the v18-derived alias and the build fails.

Deriving the type from the constructor removes the assumption, so the alias tracks whatever `@actions/github` returns.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: henrymercer

lib/entry-points.js

@@ -1,10 +1,7 @@
 import * as githubUtils from "@actions/github/lib/utils";
-import { type Octokit } from "@octokit/core";
-import { type PaginateInterface } from "@octokit/plugin-paginate-rest";
-import { type Api } from "@octokit/plugin-rest-endpoint-methods";
 
 /** The type of the Octokit client. */
-export type ApiClient = Octokit & Api & { paginate: PaginateInterface };
+export type ApiClient = InstanceType<typeof githubUtils.GitHub>;
 
 /** Constructs an `ApiClient` using `token` for authentication. */
 export function getApiClient(token: string): ApiClient {

pr-checks/api-client.ts

@@ -1,8 +1,5 @@
 import * as core from "@actions/core";
 import * as githubUtils from "@actions/github/lib/utils";
-import { type Octokit } from "@octokit/core";
-import { type PaginateInterface } from "@octokit/plugin-paginate-rest";
-import { type Api } from "@octokit/plugin-rest-endpoint-methods";
 import * as retry from "@octokit/plugin-retry";
 import { RequestRequestOptions } from "@octokit/types";
 import {
@@ -128,7 +125,7 @@ export function makeProxyRequestOptions(
 }
 
 /** The type of GitHub API client we use. */
-export type ApiClient = Octokit & Api & { paginate: PaginateInterface };
+export type ApiClient = InstanceType<typeof githubUtils.GitHub>;
 
 /** Options for `createApiClientWithDetails`. */
 interface CreateApiClientOptions {