fix: env vars and don't json stringify (#4)

Co-authored-by: Sam-Nicolai Johnston <sam-nicolai.johnston@ssense.com>

Author: sam-n-johnston

src/StepFunctionSimulatorServer.ts

@@ -87,6 +87,6 @@ export class StepFunctionSimulatorServer {
       resolve(res.status(200).json(output));
     });
 
-    await sme.execute(startAtState, JSON.stringify(executionInput.input));
+    await sme.execute(startAtState, executionInput.input);
   }
 }

src/main.ts

@@ -36,7 +36,6 @@ class ServerlessOfflineStepFunctionsPlugin {
       },
     };
 
-    this.injectEnvVars();
     this.mergeOptions();
 
     if (this.options?.enabled === false) {
@@ -53,6 +52,7 @@ class ServerlessOfflineStepFunctionsPlugin {
   }
 
   private start() {
+    this.injectEnvVars();
     // Get Handler and Path of the Local Functions
     const definedStateMachines = this.serverless.service.initialServerlessConfig?.stepFunctions?.stateMachines;