I know there's a way to do db.collection.getIndexes() Which will list all the indexes defined for a collection. Is there a way to copy and create those index definitions to another collection?

There's a lot of them and I don't want to do them one by one.

regarding the duplicated question comment: I do not wish to copy a collection. I wish to export indexes in a format that I can apply to another collection.

For example I have one existing user collection with indexes _id_, name_1, email_1 and website_1

Then I have another collection called usertest, I want to copy indexes from user collection to usertest collection. The following commands works for this scenario:

1. Copy both index key and index options

   var indexes = db.user.getIndexes();
   
   indexes.forEach(function(index){
       delete index.v;
       delete index.ns;
       var key = index.key;
       delete index.key
       var options = [];
       for (var option in index) {
           options.push(index[option]);
       }
      db.usertest.createIndex(key, options);
   });
   

2. Copy index key only (batch processing)

   var indexKeys = db.user.getIndexKeys();
   db.usertest.createIndexes(indexKeys);
   

Hope this will be helpful. Here's the doc: createIndexes