basic

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Published: Jan 5, 2024 License: Apache-2.0 Imports: 9 Imported by: 0

README

Basic example

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

$ 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.

Documentation

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There is no documentation for this package.

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