feat: add option to disable cache pruning (#134)

This PR adds an input to control whether or not the cache is pruned
before saving.

Closes #122

---------

Co-authored-by: Kevin Stillhammer <[email protected]>
Co-authored-by: Charlie Marsh <[email protected]>
Co-authored-by: Charlie Marsh <[email protected]>

src/save-cache.ts

@@ -5,7 +5,11 @@ import {
   STATE_CACHE_MATCHED_KEY,
   STATE_CACHE_KEY,
 } from "./cache/restore-cache";
-import { cacheLocalPath, enableCache } from "./utils/inputs";
+import {
+  cacheLocalPath,
+  enableCache,
+  pruneCache as shouldPruneCache,
+} from "./utils/inputs";
 
 export async function run(): Promise<void> {
   try {
@@ -32,7 +36,9 @@ async function saveCache(): Promise<void> {
     return;
   }
 
-  await pruneCache();
+  if (shouldPruneCache) {
+    await pruneCache();
+  }
 
   core.info(`Saving cache path: ${cacheLocalPath}`);
   await cache.saveCache([cacheLocalPath], cacheKey);