webtools.Env.isHerokuBuild() and isGitHubAction()

Author: ntwigg

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## [Unreleased]
 ### Added
+- `webtools.Env.isHerokuBuild()` and `isGitHubAction()`
 - `com.diffplug.webtools.jte` plugin ([#10](https://github.com/diffplug/webtools/pull/10))
 
 ## [1.2.6] - 2025-08-22

src/jte/java/webtools/Env.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2025 DiffPlug
+ *
+ * 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
+ *
+ *     https://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.
+ */
+package webtools;
+
+public class Env {
+	public static boolean isHerokuBuild() {
+		return System.getenv().containsKey("STACK");
+	}
+
+	public static boolean isGitHubAction() {
+		return System.getenv().containsKey("GITHUB_ACTION");
+	}
+}