Error: Cannot find module 'rdf-string' in core package

[mielvds]

I'm in the process of migrating an a datasource implementation that indexes summaries to 3.0. I get the following error when importing the @ldf/core package:

Error: Cannot find module 'rdf-string'
Require stack:
- /Users/mielvandersande/Meemoo/NDE/demo/datasource-summary/node_modules/@ldf/core/lib/datasources/Datasource.js
- ...

It seems the abstract class Datasource is using the rdf-string module: https://github.com/LinkedDataFragments/Server.js/blob/master/packages/core/lib/datasources/Datasource.js#L8
However, it is not mentioned in the core package's dependencies: https://github.com/LinkedDataFragments/Server.js/blob/master/packages/core/package.json#L37. Shouldn't this be the case? Or is this issue caused by something missing at my end?

[rubensworks]

Heh, weird we didn't catch that before yet. Looks like a missing dependency indeed.

[mielvds]

Because @ldf/core is mostly used in conjuction with @ldf/feature-qpf that does import rdf-string, it probably went unnoticed :) Thanks for picking this up!