v0.49.0 - 2025-08-07

This version prepares Wasmi for its 1.0 release.

Changed

• Deprecate wasmi::core module re-export. #1605
  • Public facing definitions are now re-exported from wasmi's
    crate root which users should use instead.
• Improve Wasmi's Wasmtime API mirror:
  • Make ExternRef non-nullable and introduce new nullable Ref type. #1603
    • Wasmtime uses Option<ExternRef> instead which is very similar.
    • Ref<ExternRef> can be converted to Option<ExternRef> using the val method.
  • Remove FuncRef type in favor of Ref<Func> #1604
    • Wasmtime uses Option<Func> instead which is very similar.
    • Ref<Func> can be converted to Option<Func> using the val method.
  • Deprecate InstancePre and Linker::instantiate #1602
    • Enable fuel metering and set fuel to zero before instantiation
      in order to prevent running a Wasm module's start function upon
      instantiation.
  • Deprecate LinkerBuilder type. #1601
    • Use Linker or Instance::new instead.

Internal

• Refactor and clean-up Wasmi's .wast test facilities.
  • #1591 #1586 #1585 #1581 #1579 #1592
• Add .wast tests or convert unit translation tests to .wast.
  • #1569 #1575 #1580