browser-and-deno

README

Use Go-Python to send HTTP(s) requests from inside WASM

Instructions for this devcontainer

Tested with Go 1.22.0, Bun 1.0.26, Deno 1.40.4, gpython 23c0aa29.

Preparation

1. Open this repo in devcontainer, e.g. using Github Codespaces. Type or copy/paste following commands to devcontainer's terminal.

Building

1. cd into the folder of this example:

cd browser-and-deno

1. Clone gpython repo:

git clone --depth=1 https://github.com/go-python/gpython

1. cd into the folder of gpython sources:

cd gpython

1. Make directory for WASM example, cd into it and copy provided code there:

mkdir main
cd main
cp ../../main.go ./
cp ../../*.js ./
cp ../../index.html ./

1. Compile the example:

GOOS=js GOARCH=wasm go build -o main.wasm main.go

1. Copy the glue JS from Golang distribution to example's folder:

cp "$(go env GOROOT)/misc/wasm/wasm_exec.js" .

Test with browser

1. Run simple HTTP server to temporarily publish project to Web:

python3 -m http.server

Codespace will show you "Open in Browser" button. Just click that button or obtain web address from "Forwarded Ports" tab.

1. As index.html and a 15.5M-sized main.wasm are loaded into browser, refer to browser developer console to see the results.

Test with Node.js

Impossible yet due to https://github.com/golang/go/issues/59605.

Test with Bun

1. Install Bun:

curl -fsSL https://bun.sh/install | bash

1. Run with Bun:

~/.bun/bin/bun bun.js

Test with Deno

1. Install Deno:

curl -fsSL https://deno.land/x/install/install.sh | sh

1. Run with Deno:

~/.deno/bin/deno run --allow-read --allow-net deno.js

Finish

Perform your own experiments if desired.