Add support for dependency caching.

- Fork relevant bits from https://github.com/actions/setup-java
- Use Node.js 16
- Adjust packaging
- Update uuid and other dependencies

Closes #11

src/cleanup.ts

@@ -0,0 +1,65 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 GitHub, Inc. and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * Forked from https://github.com/actions/setup-java/blob/5b36705a13905facb447b6812d613a06a07e371d/src/cleanup-java.ts
+ */
+
+import * as core from '@actions/core'
+import * as constants from './constants'
+import {isJobStatusSuccess} from './utils'
+import {save} from './cache'
+
+/**
+ * Check given input and run a save process for the specified package manager
+ * @returns Promise that will be resolved when the save process finishes
+ */
+async function saveCache(): Promise<void> {
+  const jobStatus = isJobStatusSuccess()
+  const cache = core.getInput(constants.INPUT_CACHE)
+  return jobStatus && cache ? save(cache) : Promise.resolve()
+}
+
+/**
+ * The save process is best-effort, and it should not make the workflow fail
+ * even though this process throws an error.
+ * @param promise the promise to ignore error from
+ * @returns Promise that will ignore error reported by the given promise
+ */
+async function ignoreError(promise: Promise<void>): Promise<void> {
+  try {
+    await promise
+  } catch (error) {
+    core.warning(error)
+  }
+}
+
+export async function run(): Promise<void> {
+  await ignoreError(saveCache())
+}
+
+if (require.main === module) {
+  run()
+} else {
+  // https://nodejs.org/api/modules.html#modules_accessing_the_main_module
+  core.info('the script is loaded as a module, so skipping the execution')
+}