Install a documentation library to generate diagrams of classes

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Library	Outputs
typedoc	Outputs HTML documentation, reading JSDocs.
typedoc-plugin-mermaid	Plugin for typedoc which outputs mermaid diagrams; they have to be manually drawn so probably not suitable for our purposes.
typedoc-umlclass	Typedoc plugin, generates UML and inserts into the Typedoc HTML.
classdiagram-ts	VSCode extension that outputs UML graphs that can be exported as an image, limited visual customisation.
TsUML2	Outputs SVG, nomnoml or mermaid.