wazero

Files

Anuraag Agrawal 84488768e4 Initial wazero CLI to run a standalone Wasm binary (#813 )

* Initial wazero CLI to run a standalone Wasm binary

Signed-off-by: Anuraag Agrawal <anuraaga@gmail.com>

2022-09-28 20:59:38 +09:00

testdata

Initial wazero CLI to run a standalone Wasm binary (#813 )

2022-09-28 20:59:38 +09:00

add_test.go

Redirects users to tested example (#791 )

2022-09-01 09:12:37 +08:00

add.go

Adds MustInstantiate to host imports (#814 )

2022-09-28 16:21:30 +08:00

README.md

Redirects users to tested example (#791 )

2022-09-01 09:12:37 +08:00

README.md

Basic example

This example shows how to extend a Go application with an addition function defined in WebAssembly.

Ex.

$ go run add.go 7 9
7 + 9 = 16

Compilation

wazero is a WebAssembly runtime, embedded in your host application. To run WebAssembly functions, you need access to a WebAssembly Binary (Wasm), typically a %.wasm file.

add.wasm was compiled from add.go with TinyGo, as it is the most common way to compile Go source to Wasm. Here's the minimal command to build a %.wasm binary.

cd testdata; tinygo build -o add.wasm -target=wasi add.go

Notes

Many other languages compile to (target) Wasm including AssemblyScript, C, C++, Rust, and Zig!
The embedding application is often called the "host" in WebAssembly.
The Wasm binary is often called the "guest" in WebAssembly. Sometimes they need imports to implement features such as console output. TinyGo's wasi target, requires WASI imports.