Add callLuaFunction utility and tests for Lua module loading

frontends/nextjs/src/lib/lua/ui/call-lua-function.ts

@@ -0,0 +1,37 @@
+import * as fengari from 'fengari-web'
+import { fromLua } from '@/lib/lua/functions/converters/from-lua'
+
+const lua = fengari.lua
+
+/**
+ * Call a Lua function that's in a table on the stack
+ * @param L - Lua state
+ * @param tableIndex - Stack index of the table containing the function
+ * @param functionName - Name of the function to call
+ * @returns The result of the function call
+ */
+export function callLuaFunction(L: any, tableIndex: number, functionName: string): any {
+  // Get the function from the table
+  lua.lua_getfield(L, tableIndex, fengari.to_luastring(functionName))
+
+  // Check if it's a function
+  if (!lua.lua_isfunction(L, -1)) {
+    lua.lua_pop(L, 1)
+    throw new Error(`${functionName} is not a function`)
+  }
+
+  // Call the function with 0 arguments, expecting 1 return value
+  const callResult = lua.lua_pcall(L, 0, 1, 0)
+
+  if (callResult !== lua.LUA_OK) {
+    const errorMsg = lua.lua_tojsstring(L, -1)
+    lua.lua_pop(L, 1)
+    throw new Error(`Error calling ${functionName}: ${errorMsg}`)
+  }
+
+  // Convert the result to JavaScript
+  const result = fromLua(L, -1)
+  lua.lua_pop(L, 1)
+
+  return result
+}

frontends/nextjs/src/lib/lua/ui/load-lua-ui-package.test.ts

@@ -1,10 +1,11 @@
-import { describe, it, expect } from 'bun:test'
+import { describe, expect,it } from 'bun:test'
 import { join } from 'path'
+
 import { loadLuaUIPackage } from './load-lua-ui-package'
 
 describe('loadLuaUIPackage', () => {
   it('should load example-form package with manifest and lua files', async () => {
-    const packagePath = join(__dirname, '../packages/lua-ui/example-form')
+    const packagePath = join(__dirname, '../../packages/lua-ui/example-form')
     const uiPackage = await loadLuaUIPackage(packagePath)
 
     // Check manifest
@@ -45,7 +46,7 @@ describe('loadLuaUIPackage', () => {
   })
 
   it('should execute action function from loaded package', async () => {
-    const packagePath = join(__dirname, '../packages/lua-ui/example-form')
+    const packagePath = join(__dirname, '../../packages/lua-ui/example-form')
     const uiPackage = await loadLuaUIPackage(packagePath)
 
     // Call the action function

frontends/nextjs/src/lib/lua/ui/load-lua-ui-package.ts

@@ -1,12 +1,14 @@
-import { readFile, readdir } from 'fs/promises'
+import { readdir,readFile } from 'fs/promises'
 import { join } from 'path'
-import { executeLuaCode } from '@/lib/lua/functions/execution/execute-lua-code'
+
 import { createLuaEngine } from '@/lib/lua/engine/core/create-lua-engine'
+import { executeLuaCode } from '@/lib/lua/functions/execution/execute-lua-code'
+
 import type {
+  LuaUIComponent,
   LuaUIManifest,
   LuaUIPackage,
   LuaUIPage,
-  LuaUIComponent,
 } from './types/lua-ui-package'
 
 /**

frontends/nextjs/src/lib/lua/ui/test-lua-module.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect,it } from 'bun:test'
+
+import { createLuaEngine } from '@/lib/lua/engine/core/create-lua-engine'
+import { executeLuaCode } from '@/lib/lua/functions/execution/execute-lua-code'
+
+describe('Lua module loading', () => {
+  it('should load a simple Lua module with function', async () => {
+    const luaCode = `
+local M = {}
+
+function M.render()
+  return {
+    type = "Box",
+    props = { padding = 2 }
+  }
+end
+
+return M
+`
+
+    const engine = createLuaEngine()
+    const result = await executeLuaCode(engine.L, luaCode, {}, [])
+
+    console.log('Execution result:', JSON.stringify(result, null, 2))
+    console.log('Result type:', typeof result.result)
+    console.log('Result keys:', result.result ? Object.keys(result.result) : 'no keys')
+
+    engine.destroy()
+
+    expect(result.success).toBe(true)
+  })
+})

frontends/nextjs/src/types/dbal.d.ts

@@ -7,9 +7,9 @@
  * under the large-file threshold and easier to maintain.
  */
 
+export * from './dbal/blob.js'
 export * from './dbal/core-config.js'
 export * from './dbal/core-types.js'
-export * from './dbal/tenant-context.js'
 export * from './dbal/kv-store.js'
-export * from './dbal/blob.js'
 export * from './dbal/tenant-aware-blob.js'
+export * from './dbal/tenant-context.js'