fix(apollo-mock-server): check if graphql-tag/loader is already added

xing · Dec 17, 2019 · 83dc87b · 83dc87b
1 parent 42c6e72
commit 83dc87b
Showing 1 changed file with 8 additions and 4 deletions.
diff --git a/packages/apollo-mock-server/mixin.core.js b/packages/apollo-mock-server/mixin.core.js
@@ -34,10 +34,14 @@ class GraphQLMixin extends Mixin {
   configureBuild(webpackConfig, loaderConfigs, target) {
     const { allLoaderConfigs } = loaderConfigs;
 
-    allLoaderConfigs.splice(allLoaderConfigs.length - 1, 0, {
-      test: /\.(graphql|gql)$/,
-      loader: 'graphql-tag/loader',
-    });
+    if (
+      !allLoaderConfigs.find(({ loader }) => loader === 'graphql-tag/loader')
+    ) {
+      allLoaderConfigs.splice(allLoaderConfigs.length - 1, 0, {
+        test: /\.(graphql|gql)$/,
+        loader: 'graphql-tag/loader',
+      });
+    }
 
     webpackConfig.externals.push('encoding');