1 files changed, 29 insertions, 0 deletions
diff --git a/node_modules/hullabaloo-config-manager/lib/readSafe.js b/node_modules/hullabaloo-config-manager/lib/readSafe.js
new file mode 100644
index 000000000..568258ac6
--- /dev/null
+++ b/node_modules/hullabaloo-config-manager/lib/readSafe.js
@@ -0,0 +1,29 @@
+'use strict'
+
+const gfs = require('graceful-fs')
+
+function readSafe (source, cache) {
+  if (cache && cache.files && cache.files.has(source)) {
+    return cache.files.get(source)
+  }
+
+  const promise = new Promise((resolve, reject) => {
+    gfs.readFile(source, (err, contents) => {
+      if (err) {
+        if (err.code === 'ENOENT') {
+          resolve(null)
+        } else {
+          reject(err)
+        }
+      } else {
+        resolve(contents)
+      }
+    })
+  })
+
+  if (cache && cache.files) {
+    cache.files.set(source, promise)
+  }
+  return promise
+}
+module.exports = readSafe