Problem Statement/Rationale

Numeric collection names are trying to be rewritten by a playground to an invalid form.

Steps to Reproduce

• Create a collection named `1` (the number)
• Use some command that requires collection name, e.g. `db.getCollection('')`
• Trigger autocomplete in the playground (Control+Space on Mac)

Expected Results

db.getCollection('1').insertMany([
  { 'item': 'abc', 'price': 10, 'quantity': 2, 'date': new Date('2014-03-01T08:00:00Z') },
]);

Actual Results

db.getCollection(['1']').insertMany([

  { 'item': 'abc', 'price': 10, 'quantity': 2, 'date': new Date('2014-03-01T08:00:00Z') },
]);