fix: add support for ES6 modules

tehsenaus · bcoe · commit f18f780debc9 · 2017-05-31T16:06:00.000-07:00
diff --git a/lib/instrumenters/istanbul.js b/lib/instrumenters/istanbul.js
@@ -11,7 +11,8 @@ function InstrumenterIstanbul (cwd, options) {
     embedSource: true,
     noCompact: false,
     preserveComments: true,
-    produceSourceMap: options.produceSourceMap
+    produceSourceMap: options.produceSourceMap,
+    esModules: true
   })
 
   return {
