From 941b25a2cadcc09fa52104ba67eb8d9f8992c833 Mon Sep 17 00:00:00 2001
From: Rafael Oleza <rafeca@fb.com>
Date: Wed, 18 Oct 2017 12:10:09 -0700
Subject: [PATCH] Ignore some irrelevant URL params in order to calculate the
 bundle cache

Reviewed By: davidaurelio

Differential Revision: D6086420

fbshipit-source-id: 52c1d5dc53d23b3963e663f4033446344b892659
---
 packages/metro-bundler/src/Server/index.js | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/packages/metro-bundler/src/Server/index.js b/packages/metro-bundler/src/Server/index.js
index 8a280793..f74072da 100644
--- a/packages/metro-bundler/src/Server/index.js
+++ b/packages/metro-bundler/src/Server/index.js
@@ -608,8 +608,15 @@ class Server {
   }
 
   optionsHash(options: {}) {
-    // onProgress is a function, can't be serialized
-    return JSON.stringify(Object.assign({}, options, {onProgress: null}));
+    // List of option parameters that won't affect the build result, so they
+    // can be ignored to calculate the options hash.
+    const ignoredParams = {
+      onProgress: null,
+      excludeSource: null,
+      sourceMapUrl: null,
+    };
+
+    return JSON.stringify(Object.assign({}, options, ignoredParams));
   }
 
   /**