HACK: Make parceljs ignore the webpack-only require

The `if` surrounding the require of `!raw-loader!./js.py` should be enough to limit the processing of this line only by webpack. However, looks like parceljs is greedy and tries to follow such path. Then it fails for a code path that will never be executed by him.

The code change make parceljs ignore such require. Is not beautiful and should be replaced when parceljs provides something nicer.

Author: alanjds

index.js

@@ -21,7 +21,7 @@ if (typeof webpackJsonp !== 'object') {
   pyjs = require('fs').readFileSync(__dirname + '/js.py').toString();
 }
 else {
-  pyjs = require('!raw-loader!./js.py').default;
+  pyjs = require('!raw-loader!' + './js.py').default;
 }
 
 function wait_exist(fn) {