refactor(preprocess): move preprocess update step to later in buildUpdate process

Author: danbucholtz

src/build.ts

@@ -226,10 +226,6 @@ function buildUpdateTasks(changedFiles: ChangedFile[], context: BuildContext) {
   };
 
   return loadFiles(changedFiles, context)
-    .then(() => {
-      // PREPROCESS
-      return preprocessUpdate(changedFiles, context);
-    })
     .then(() => {
       // TEMPLATE
       if (context.templateState === BuildState.RequiresUpdate) {
@@ -258,6 +254,10 @@ function buildUpdateTasks(changedFiles: ChangedFile[], context: BuildContext) {
       return Promise.resolve();
 
     })
+    .then(() => {
+      // PREPROCESS
+      return preprocessUpdate(changedFiles, context);
+    })
     .then(() => {
       // BUNDLE
       if (context.bundleState === BuildState.RequiresUpdate) {