Unless you want to leave an unmaintainable nugget of code for the future dev, you would use something that is actually in use and backed by someone relevant, no

Unless you want to leave an unmaintainable nugget of code for the future dev, you would use something that is actually in use and backed by someone relevant, not a shiny new thing. The three you mentioned got over the hump by corporate backing. In particular Rust got in force thanks to Mozilla, golang to Google and TypeScript to Microsoft. Big guys sometimes make an abject irrelevancy or failure (e.g. F# which didn't quite catch on, old stuff like Visual Basic) but usually at least the support and visibility is there.