Use new Oracle GraalVM EA builds repo.

src/utils.ts

@@ -34,25 +34,6 @@ export async function exec(
   }
 }
 
-export async function getLatestPrerelease(
-  repo: string
-): Promise<c.ReleasesResponse['data'][number]> {
-  const githubToken = getGitHubToken()
-  const options = githubToken.length > 0 ? {auth: githubToken} : {}
-  const octokit = new GitHubDotCom(options)
-  const releases: c.ReleasesResponse['data'] = (
-    await octokit.request('GET /repos/{owner}/{repo}/releases', {
-      owner: c.GRAALVM_GH_USER,
-      repo
-    })
-  ).data
-  const firstPrerelease = releases.find(r => r.prerelease)
-  if (!firstPrerelease) {
-    throw new Error(`Unable to find latest prerelease in ${repo}`)
-  }
-  return firstPrerelease
-}
-
 export async function getLatestRelease(
   repo: string
 ): Promise<c.LatestReleaseResponse['data']> {
@@ -67,6 +48,22 @@ export async function getLatestRelease(
   ).data
 }
 
+export async function getContents(
+  repo: string,
+  path: string
+): Promise<c.ContentsResponse['data']> {
+  const githubToken = getGitHubToken()
+  const options = githubToken.length > 0 ? {auth: githubToken} : {}
+  const octokit = new GitHubDotCom(options)
+  return (
+    await octokit.request('GET /repos/{owner}/{repo}/contents/{path}', {
+      owner: c.GRAALVM_GH_USER,
+      repo,
+      path
+    })
+  ).data
+}
+
 export async function getTaggedRelease(
   repo: string,
   tag: string