This is going to be a Tcl extension named "webassembly" that then allows you to load other Tcl extensions that are compiled to WebAssembly. Right now Tcl loads

This is going to be a Tcl extension named "webassembly" that then allows you to load other Tcl extensions that are compiled to WebAssembly. Right now Tcl loads binary extensions using the "load" command, this will load a shared object (.so, .dylib, .shlib, .dll, .a, whatever your OS supports for runtime loading) and call <ExtensionName>_Init. My plan is to create a new command named "webassembly::load" that will open a WebAssembly module and provide ... some way ... to call <ExtensionName>_Init as well as some way for the extension to make calls back the ~200 Tcl API functions and some selected other APIs per platform (Solaris, AIX, FreeBSD, Linux, Windows, macOS, HP-UX, etc). Additionally, a mechanism (probably in the form of an SDK) for Tcl Extension maintainers to compile their extension targeting being loaded by "webassembly::load" with the APIs mentioned above being available. Most Tcl extensions right now are written in C or C++.