using JSON.stringify to while logging mapping

Author: Gaurang

elastic.js

@@ -114,7 +114,7 @@ class Elastic{
  index: config.source.index,
  type: config.source.type
  })
- console.log("Mapping: ", mapping);
+ console.log("Mapping: ", JSON.stringify(mapping));
 
  if(!await target.indices.exists({index: config.target.index}))
  await target.indices.create({index: config.target.index});