wasi_virt_layer provides a virtualization layer for WebAssembly System Interface (WASI).

This crate facilitates merging a Virtual File System (VFS) and threading mechanisms into standard WASI modules without modifying their source code in complex ways. It allows a host environment (like browsers via JavaScript bindings) to seamlessly interact with in-memory Wasm modules.

Core Concepts

• Virtual File System (VFS): Overrides filesystem-related WASI calls to a custom virtualized implementation.
• Threading: Provides components that patch how Wasm spawns and manages threads using shared memory.
• Memory Bridge: Manages memory boundaries and host-guest interaction.