Go 1.21 introduces a new port for the WASI preview 1 syscall API, identified by the GOOS value wasip1. WebAssembly is a binary instruction format that enables high-performance code execution in web browsers. Initially supported in Go 1.11 using the js/wasm port, Wasm has expanded beyond the browser through cloud providers that allow Wasm executables to run directly. The WebAssembly System Interface provides a standardized syscall API for this purpose, facilitating interactions with system resources. Future Go compiler updates may include support for new WASI versions.
Go 1.21 introduces a port targeting the WASI preview 1 syscall API through the new GOOS value wasip1, enhancing support for WebAssembly applications.
WebAssembly (Wasm) is a binary instruction format that allows developers to run high-performance, low-level code directly in web browsers at near-native speeds.
The WebAssembly System Interface (WASI) defines a syscall API for Wasm executables, enabling interaction with system resources like the filesystem and system clock.
Executables using WASI can be run outside the browser, making Wasm useful for cloud services that support direct execution of Wasm executables.
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