add hook *before:step-functions-offline:start*

index.js

@@ -12,6 +12,7 @@ const run = require('./lib/run');
 const prepareLocalInvoke = require('./lib/prepareLocalInvoke');
 const runPluginSupport = require('./lib/runPluginSupport');
 const prepareOfflineInvoke = require('./lib/prepareOfflineInvoke');
+const prepareStepOfflineInvoke = require('./lib/prepareStepOfflineInvoke');
 const packExternalModules = require('./lib/packExternalModules');
 const packageModules = require('./lib/packageModules');
 const lib = require('./lib');
@@ -44,7 +45,8 @@ class ServerlessWebpack {
       packageModules,
       prepareLocalInvoke,
       runPluginSupport,
-      prepareOfflineInvoke
+      prepareOfflineInvoke,
+      prepareStepOfflineInvoke
     );
 
     this.commands = {
@@ -153,6 +155,9 @@ class ServerlessWebpack {
         .then(this.prepareOfflineInvoke)
         .then(this.wpwatch),
 
+      'before:step-functions-offline:start': () => BbPromise.bind(this)
+         .then(this.prepareStepOfflineInvoke)
+         .then(this.compile)
     };
   }
 }

lib/prepareStepOfflineInvoke.js

@@ -0,0 +1,24 @@
+'use strict';
+
+const _ = require('lodash');
+const path = require('path');
+
+/**
+ * Special settings for use with serverless-offline.
+ */
+
+module.exports = {
+  prepareStepOfflineInvoke() {
+    _.set(this.serverless, 'service.package.individually', false);
+
+    return this.serverless.pluginManager.spawn('webpack:validate')
+      .then(() => {
+        if (!this.options.location && !_.get(this.serverless, 'service.custom.stepFunctionsOffline.location')) {
+          _.set(this.serverless, 'service.custom.stepFunctionsOffline.location',
+            path.relative(this.serverless.config.servicePath, path.join(this.webpackOutputPath, 'service'))
+          );
+        }
+        return null;
+      });
+  }
+};