wazero

wazero CLI

The wazero CLI can be used to execute a standalone WebAssembly binary.

Installation

$ go install github.com/tetratelabs/wazero/cmd/wazero@latest

Usage

The wazero CLI accepts a single argument, the path to a WebAssembly binary. Arguments can be passed to the WebAssembly binary itself after the path.

wazero run calc.wasm 1 + 2

In addition to arguments, the WebAssembly binary has access to stdout, stderr, and stdin.

Docker / Podman

wazero doesn't currently publish binaries, but you can make your own with our example Dockerfile. It should amount to about 4.5MB total.

# build the image
$ docker build -t wazero:latest -f Dockerfile .
# volume mount wasi or GOOS=js wasm you are interested in, and run it.
$ docker run -v ./testdata/:/wasm wazero:latest /wasm/wasi_arg.wasm 1 2 3
wasi_arg.wasm123