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Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

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Co-authored-by: Michael Kriese <michael.kriese@visualon.de>
Co-authored-by: Jamie Magee <jamie.magee@gmail.com>

Closes #10119

This reverts commit 1304bc93.

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

Co-authored-by: Jamie Magee <jamie.magee@gmail.com>

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* refactor(datasource): migrate to class based datasource

    A small experiment into what OOP/class based datasources might look like. Picked Cdnjs as it's the smallest & simplest.

    With this approach we can share common logic, like error handling, rate limiting, etc. between different datasources, instead of having to reimplement it each time we write a new datasource. Currently there's nothing shared, as it's only 1 datasource, but the interesting stuff will come with the 2nd datasource

* Apply suggestions from code review

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

* remove renaming ClojureDatasource to datasource in tests

Co-authored-by: Rhys Arkins <rhys@arkins.net>
Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

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No longer disable @types/node major updates, instead use node versioning.

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