How to add 'Range' property to base Printable definition?

Hello,

Judging from the node extension ability with builders, this looks like it should be possible, but after about an hour of fiddling, the property doesn't show in my typescript type checking.

Any chance of a quick example as to how one would achieve this?

Esprima attaches a `Range` property (which is an array of numbers) to each node if the user requests it.

Thanks

Marlon

The issue names no files or tests. Start by tracing the TypeScript definitions for the base Printable type and the node extension or builder mechanism; done means providing a documented example showing how to expose Esprima’s optional Range number array for type checking.

Written by the indexing model from the issue text.