check for devtools presence in statechart (cerebral#332)

check for devtools presence in statechart

Author: christianalfoni

packages/node_modules/overmind/src/config/statechart.ts

@@ -223,7 +223,7 @@ export function statechart<C extends IConfiguration>(
         }
       })
 
-      if (process.env.NODE_ENV === 'development') {
+      if (process.env.NODE_ENV === 'development' && instance.devtools) {
         instance.devtools.send({
           type: 'chart',
           data: {
@@ -344,7 +344,7 @@ export function statechart<C extends IConfiguration>(
 
           stateTarget.states = newStates
 
-          if (process.env.NODE_ENV === 'development') {
+          if (process.env.NODE_ENV === 'development' && currentInstance.devtools) {
             currentInstance.devtools.send({
               type: 'chart',
               data: {