lua-wasm-bindings

Lua WASM Bindings

WASM bindings and binaries for Lua 5.0 to 5.4.

Make sure to run ./scripts/setup.sh (requires emscripten sdk) first before using npm run build.

$3

In the future Bindings for the complete API may be added.

$3

``ts
import { LUA_OK } from "lua-wasm-bindings/dist/lua";

import { lauxlib, lua, lualib } from "lua-wasm-bindings/dist/lua.54";

const luaCode = return "Hello";
consol.log(executeLua(luaCode));

function executeLua(luaCode: string): string | Error | never {
const L = lauxlib.luaL_newstate();
lualib.luaL_openlibs(L);

// Optional Load modules
// lua.lua_getglobal(L, "package");
// lua.lua_getfield(L, -1, "preload");
// lauxlib.luaL_loadstring(L, jsonLib); // Load extenal package from string
// lua.lua_setfield(L, -2, "json");

const status = lauxlib.luaL_dostring(L, luaCode);

if (status === LUA_OK) {
if (lua.lua_isstring(L, -1)) {
const result = lua.lua_tostring(L, -1);
lua.lua_close(L);
return result === null ? undefined : result;
} else {
const returnType = lua.lua_typename(L, lua.lua_type(L, -1));
lua.lua_close(L);
throw new Error(Unsupported Lua return type: ${returnType});
}
} else {
const luaStackString = lua.lua_tostring(L, -1);
const message = luaStackString.replace(/^\[string "(--)?\.\.\."\]:\d+: /, "");
lua.lua_close(L);
return new Error(message);
}
}
``