Check preprocessorOptions is present, as it's breaking tests if you d…

…on't use a preprocessor. (#1482)
jestjs · Aug 27, 2016 · fb93ad6 · fb93ad6
1 parent 7f4b8d3
commit fb93ad6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/babel-jest/src/index.js b/packages/babel-jest/src/index.js
@@ -34,7 +34,7 @@ const createTransformer = (options: any) => {
     ): string {
       let plugins = options.plugins || [];
 
-      if (preprocessorOptions.instrument) {
+      if (preprocessorOptions && preprocessorOptions.instrument) {
         plugins = plugins.concat(require('babel-plugin-istanbul').default);
       }