run function to handle GitHub Action main and post runs

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

src/index.ts

@@ -0,0 +1,42 @@
+/**
+ * Copyright 2023 actions-toolkit authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import * as core from '@actions/core';
+
+const isPost = !!process.env['STATE_isPost'];
+if (!isPost) {
+  core.saveState('isPost', 'true');
+}
+
+/**
+ * Runs a GitHub Action.
+ * Output will be streamed to the live console.
+ *
+ * @param     main            runs the defined function.
+ * @param     post            runs the defined function at the end of the job if set.
+ * @returns   Promise<void>
+ */
+export async function run(main: () => Promise<void>, post?: () => Promise<void>): Promise<void> {
+  if (!isPost) {
+    try {
+      await main();
+    } catch (e) {
+      core.setFailed(e.message);
+    }
+  } else if (post) {
+    await post();
+  }
+}