feat: initial version

src/index.ts

@@ -0,0 +1,17 @@
+import { createTokenAuth } from "@octokit/auth-token";
+
+export function createActionAuth() {
+  if (!process.env.GITHUB_ACTION) {
+    throw new Error(
+      "[@octokit/auth-action] `GITHUB_ACTION` environment variable is not set. @octokit/auth-action is meant to be used in GitHub Actions only."
+    );
+  }
+
+  if (!process.env.GITHUB_TOKEN) {
+    throw new Error(
+      "[@octokit/auth-action] `GITHUB_TOKEN` environment variable is not set. See https://help.github.com/en/articles/virtual-environments-for-github-actions#github_token-secret"
+    );
+  }
+
+  return createTokenAuth(process.env.GITHUB_TOKEN);
+}