From ae2258f68c9f1a06347fec8441e2af49171ace6c Mon Sep 17 00:00:00 2001
From: Evilebot Tnawi <evilebottnawi@users.noreply.github.com>
Date: Fri, 22 Mar 2019 18:10:24 +0300
Subject: [PATCH] perf: avoid extra call `stat` for file (#365)

---
 src/postProcessPattern.js | 6 +++++-
 src/preProcessPattern.js  | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/postProcessPattern.js b/src/postProcessPattern.js
index 03b9a2f3..f550b620 100644
--- a/src/postProcessPattern.js
+++ b/src/postProcessPattern.js
@@ -25,7 +25,11 @@ export default function postProcessPattern(globalRef, pattern, file) {
 
   logger.debug(`getting stats for '${file.absoluteFrom}' to write to assets`);
 
-  return stat(inputFileSystem, file.absoluteFrom).then((stats) => {
+  const getStats = pattern.stats
+    ? Promise.resolve().then(() => pattern.stats)
+    : stat(inputFileSystem, file.absoluteFrom);
+
+  return getStats.then((stats) => {
     // We don't write empty directories
     if (stats.isDirectory()) {
       logger.debug(
diff --git a/src/preProcessPattern.js b/src/preProcessPattern.js
index 4b4a0ae1..6700d1b9 100644
--- a/src/preProcessPattern.js
+++ b/src/preProcessPattern.js
@@ -158,6 +158,7 @@ export default function preProcessPattern(globalRef, pattern) {
 
         fileDependencies.add(pattern.absoluteFrom);
 
+        pattern.stats = stats;
         pattern.fromType = 'file';
         pattern.context = path.dirname(pattern.absoluteFrom);
         pattern.glob = normalize(pattern.absoluteFrom);