Wasm "run in browser" mode

[pjebs]

If I select Wasm mode, does that mean I don't need docker? (i.e. the compiler itself is a wasm application)
It says "downloading application". What does that mean?

[x1unix]

In WASM mode, program is compiled on a server but executed in a browser. This allows you to have features not available on Go's playground server such as benchmark support and real date and time.

Previously playground also had interpreter mode powered by Yaegi, so you could run playground completely offline but unfortunately the library was abandoned and never got modern features like Go generics so I removed it.

In future i could think about porting Go compiler into WASM but this is a huge effort that requires help of multiple contributors.