Some mechanism to have the raw definition of the schema

Hi guys, would be possible to expose a method or property to have the raw data like

const schemaA = new SimpleSchema({ name: { type: String }});
const definition = schemaA.definition // => return the { name: { type: String } }

[aldeed]

Keeping a reference to both the original schema obj and the expanded clone could increase memory consumption quite a bit. (I assume at least some of the original obj is being garbage collected right now.) If anyone implements this, it should be opt-in with a constructor option, unless you can prove that memory use is unchanged.

In the constructor it might look something like this:

if (keepRawSchemaRef) {
  this.rawSchema = schema;
}

[coagmano]

Should be relatively simple, if you want to try making a PR?