Improve checkout performance on Windows runners by upgrading @actions/github dependency (#1246)

* Improve checkout performance on Windows runners by upgrading @actions/github dependency

Re: https://github.com/actions/checkout/issues/1186

@dscho discovered that the checkout action could stall for a
considerable amount of time on Windows runners waiting for PowerShell
invocations made from 'windows-release' npm package to complete.

Then I studied the dependency chain to figure out where
'windows-release' was imported:

'@actions/checkout'@main
  <- '@actions/github'@2.2.0
    <- '@octokit/endpoint'@6.0.1
    <- '@octokit/graphql'@4.3.1
    <- '@octokit/request'@5.4.2
    <- '@octokit/rest'@16.43.1
      <- 'universal-user-agent'@4.0.1
        <- 'os-name'@3.1.0
          <- 'windows-release'@3.1.0

'universal-user-agent' package dropped its dependency on 'os-name' in
https://github.com/gr2m/universal-user-agent/releases/tag/v6.0.0 .

'@actions/github' v3 removed dependency on '@octokit/rest'@16.43.1 and
allows users to move away from the old 'universal-user-agent' v4.
(https://github.com/actions/toolkit/pull/453)

This pull request attempts to update the version of '@actions/github'
used in the checkout action to avoid importing 'windows-release'.

Based on testing in my own repositories, I can see an improvement in
reduced wait time between entering the checkout action and git actually
starts to do useful work.

* Update .licenses

* Rebuild index.js

1 files changed, 10 insertions, 15 deletions

diff --git a/src/github-api-helper.ts b/src/github-api-helper.ts
index 2124a86..86632f5 100644
--- a/src/github-api-helper.ts
+++ b/src/github-api-helper.ts
@@ -1,12 +1,12 @@
 import * as assert from 'assert'
 import * as core from '@actions/core'
 import * as fs from 'fs'
+import * as github from '@actions/github'
 import * as io from '@actions/io'
 import * as path from 'path'
 import * as retryHelper from './retry-helper'
 import * as toolCache from '@actions/tool-cache'
 import {default as uuid} from 'uuid/v4'
-import {getOctokit, Octokit} from './octokit-provider'
 
 const IS_WINDOWS = process.platform === 'win32'
 
@@ -84,11 +84,11 @@ export async function getDefaultBranch(
 ): Promise<string> {
   return await retryHelper.execute(async () => {
     core.info('Retrieving the default branch name')
-    const octokit = getOctokit(authToken, {baseUrl: baseUrl})
+    const octokit = github.getOctokit(authToken, {baseUrl: baseUrl})
     let result: string
     try {
       // Get the default branch from the repo info
-      const response = await octokit.repos.get({owner, repo})
+      const response = await octokit.rest.repos.get({owner, repo})
       result = response.data.default_branch
       assert.ok(result, 'default_branch cannot be empty')
     } catch (err) {
@@ -125,19 +125,14 @@ async function downloadArchive(
   commit: string,
   baseUrl?: string
 ): Promise<Buffer> {
-  const octokit = getOctokit(authToken, {baseUrl: baseUrl})
-  const params: Octokit.ReposGetArchiveLinkParams = {
+  const octokit = github.getOctokit(authToken, {baseUrl: baseUrl})
+  const download = IS_WINDOWS
+    ? octokit.rest.repos.downloadZipballArchive
+    : octokit.rest.repos.downloadTarballArchive
+  const response = await download({
     owner: owner,
     repo: repo,
-    archive_format: IS_WINDOWS ? 'zipball' : 'tarball',
     ref: commit || ref
-  }
-  const response = await octokit.repos.getArchiveLink(params)
-  if (response.status != 200) {
-    throw new Error(
-      `Unexpected response from GitHub API. Status: ${response.status}, Data: ${response.data}`
-    )
-  }
-
-  return Buffer.from(response.data) // response.data is ArrayBuffer
+  })
+  return Buffer.from(response.data as ArrayBuffer) // response.data is ArrayBuffer
 }