Abstract: Embodiments relate to interactively debugging non-native code inside native executables to identify erroneous execution logic and/or performance issues. The non-native code can be WebAssembly (WASM) code. Source smart contract code can be converted into a native binary in a format of a shared library. The shared library can be loaded by a blockchain executable when ready to load the smart contract for execution, and execution control can be passed to the shared library. A debugger can be attached to the host executable and single step through the smart contract code invoked. Embodiments relate to enabling interactive debugging of code as shared libraries (.