Thanks for reporting this.

I suspect this may be related to #27462. Change 170950 was merged during the 1.13 development phase and it reduces the amount of memory initially allocated by wasm code.

I see you're on 1.12. Can you please try out the 1.13 release candidate (see https://groups.google.com/d/msg/golang-dev/EpB8KISgdEw/TOf9WHkHDgAJ) to see if it does fix your problem?

@ALTree Thanks for feedback, I have done it by you suggestion, but I have this error messages
I use the go version is 1.13rc2

> GOOS=js GOARCH=wasm go build -o shared/wasm/main.wasm -i src/github.com/go-wasm/wasm.go

unexpected directory layout:
	import path: _/Users/betalpha/projects/bar-webapp/src/github.com/go-wasm/parser
	root: /Users/betalpha/projects/bar-webapp/src
	dir: /Users/betalpha/projects/bar-webapp/src/github.com/go-wasm/parser
	expand root: /Users/betalpha/projects/bar-webapp
	expand dir: /Users/betalpha/projects/bar-webapp/src/github.com/go-wasm/parser
	separator: /

That is an unrelated issue and most probably due to where your code is placed in the filesystem. A google search gives some hits. Please look into those. Or reach out to the forums here.

And in future, please always fill the issue template in its entirety. That helps us debug the issue much faster.

@ALTree @agnivade the problem is resolved in version 1.13rc2, thanks very much

@dingchaoyan1983 Nice! Thank you for checking.