There is what i believe to be a debug console.log inside the writeSync https://github.com/golang/go/blob/77f911e31c243a8302c086d64dbef340b0c999b8/lib/wasm/wasm_exec.js#L22
Comment From: gopherbot
Change https://go.dev/cl/696735 mentions this issue: lib/wasm: remove a stray console.log
Comment From: Darckfast
on further investigation, it appears that this line is responsible for printing out the buffer that fmt.Print is writing to while running in the browser
by commenting it out, no buffer is printed in the console
i will close this issue, as it is not a bug