Ruby has had a huge decline in the past ten years, IMO.
Also, note that TypeScript is tracked separately from Javascript, which is likely part of its decline. I wouldn't be surprised if JS backends are ultimately declining as well (perhaps Go and Python are taking its place?)
> Ruby has had a huge decline in the past ten years, IMO.
People keep saying that. Ruby has had a "huge decline" if you look at the percentage of commits on Github over the last decade [1], a decrease of more than a factor of 3. However, in that same decade Github has grown (much) more than a factor of 3. So the total number of Ruby commits on GitHub has grown substantially. That's not really what I would call a huge decline.
Also, note that TypeScript is tracked separately from Javascript, which is likely part of its decline. I wouldn't be surprised if JS backends are ultimately declining as well (perhaps Go and Python are taking its place?)