bytecodealliance/wasmtime v18.0.0

on GitHub

18.0.0

Released 2024-02-20.

Added

• The wasmtime-c-api-impl crate is now published on crates.io.
  #7837

• A new EngineWeak type enables holding a weak pointer to an engine with the
  ability to dynamically and fallibly upgrade it to an Engine.
  #7797

• The WebAssembly tail calls proposal can now be enabled through the C API.
  #7811

• The import and export types of a Component can now be inspected at runtime.
  #7804

• New APIs/types have been added to support a faster version of looking up
  module exports without using string lookups with Module::get_export_index.
  #7828

Changed

• Owned resources represented with ResourceAny can now be passed as arguments
  to functions that require a borrow<T> parameter.
  #7783

• Generated structures from wasmtime::component::bindgen! for exported
  interfaces are now all renamed to Guest to avoid conflicting with WIT names.
  #7794

• Guest profiler output will now automatically demangle symbols.
  #7809

• The wasmtime crate now has a runtime Cargo feature which, if disabled,
  enables building Wasmtime with only the ability to compile WebAssembly
  modules. This enables compiling Wasmtime's compilation infrastructure, for
  example, to WebAssembly itself.
  #7766

• Support for the old wasi-common crate and the original implementation of
  "WASIp1" aka "preview1" is being deprecated in the wasmtime-wasi crate.
  Users should migrate to the wasmtime_wasi::preview2 implementation, which
  supports both WASIp1 and WASIp2, as in the next release the
  wasi-common-based reexports of wasmtime-wasi will be deleted.
  #7881