cacache@15.0.0

1 files changed, 30 insertions, 0 deletions

diff --git a/node_modules/cacache/lib/util/disposer.js b/node_modules/cacache/lib/util/disposer.js
new file mode 100644
index 000000000..8a24ad2f2
--- /dev/null
+++ b/node_modules/cacache/lib/util/disposer.js
@@ -0,0 +1,30 @@
+'use strict'
+
+module.exports.disposer = disposer
+
+function disposer (creatorFn, disposerFn, fn) {
+  const runDisposer = (resource, result, shouldThrow = false) => {
+    return disposerFn(resource)
+      .then(
+        // disposer resolved, do something with original fn's promise
+        () => {
+          if (shouldThrow) {
+            throw result
+          }
+          return result
+        },
+        // Disposer fn failed, crash process
+        (err) => {
+          throw err
+          // Or process.exit?
+        })
+  }
+
+  return creatorFn
+    .then((resource) => {
+      // fn(resource) can throw, so wrap in a promise here
+      return Promise.resolve().then(() => fn(resource))
+        .then((result) => runDisposer(resource, result))
+        .catch((err) => runDisposer(resource, err, true))
+    })
+}