From 54b9d4f6ed2e9ceac59043c1d55df7d32ff2c312 Mon Sep 17 00:00:00 2001
From: Evan Bacon <baconbrix@gmail.com>
Date: Wed, 9 Dec 2020 14:51:45 -0800
Subject: [PATCH] fix mod serialization (#3008)

---
 packages/config/src/Serialize.ts                            | 5 ++++-
 packages/config/src/__tests__/fixtures/plugins/my-plugin.js | 5 ++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/packages/config/src/Serialize.ts b/packages/config/src/Serialize.ts
index e2a2c9f066..daedfd20f0 100644
--- a/packages/config/src/Serialize.ts
+++ b/packages/config/src/Serialize.ts
@@ -64,7 +64,10 @@ export function serializeAfterStaticPlugins(val: any): any {
     const output: { [key: string]: any } = {};
     for (const property in val) {
       if (val.hasOwnProperty(property)) {
-        if (property === 'plugins' && Array.isArray(val[property])) {
+        if (property === 'mods') {
+          // Don't serialize mods
+          output[property] = val[property];
+        } else if (property === 'plugins' && Array.isArray(val[property])) {
           // Serialize the mods by removing any config plugins
           output[property] = val[property].map(serializeAndEvaluatePlugin);
         } else {
diff --git a/packages/config/src/__tests__/fixtures/plugins/my-plugin.js b/packages/config/src/__tests__/fixtures/plugins/my-plugin.js
index cda76a1292..6fdfe9f21f 100644
--- a/packages/config/src/__tests__/fixtures/plugins/my-plugin.js
+++ b/packages/config/src/__tests__/fixtures/plugins/my-plugin.js
@@ -1,4 +1,7 @@
+const { withAndroidManifest } = require('@expo/config-plugins');
+
 module.exports = config => {
   config.slug = 'from-custom-plugin';
-  return config;
+  // test that the mods don't get serialized
+  return withAndroidManifest(config, config => config);
 };