I used D3 v5 only for the force directed graphs part, independently in an artificial life & lambda calculus project. Is maybe too much for such an austere domain, since I saw comments that the result is "unnecessarily flashy". Give me any other visually comparable, but lower level js library for the same purpose and I'll take it. I'm not a programmer, but to paraphrase Mark Twain from A Connecticut Yankee in King Arthur's Court, I felt "I was standing in the awful presence of the Mother of the" functional_programming "language".