Improve template code to better support node

1. Fixed missing type export (platforms/node.d.ts)
   - Exported DefaultNodeSetupOptions type that is referenced in index.js

2. Updated index.d.ts to support both platforms
   - Made init() function accept DefaultNodeSetupOptions for node platform
   - Made init() function accept Options for browser platform

3. Fixed conditional compilation in node.js
   - Wrapped getImports() in HAS_IMPORTS conditional (platforms/node.js)

Author: t089

Plugins/PackageToJS/Templates/index.d.ts

@@ -1,4 +1,7 @@
 import type { Exports, Imports, ModuleSource } from './instantiate.js'
+/* #if TARGET_PLATFORM_NODE */
+import type { DefaultNodeSetupOptions } from './platforms/node.js'
+/* #endif */
 
 export type Options = {
     /**
@@ -18,10 +21,21 @@ export type Options = {
 /**
  * Instantiate and initialize the module
  *
+/* #if TARGET_PLATFORM_NODE */
+ * This is a convenience function for Node.js environments.
+/* #else */
  * This is a convenience function for browser environments.
+/* #endif */
  * If you need a more flexible API, see `instantiate`.
  */
+/* #if TARGET_PLATFORM_NODE */
+export declare function init(options?: DefaultNodeSetupOptions): Promise<{
+    instance: WebAssembly.Instance,
+    exports: Exports
+}>
+/* #else */
 export declare function init(options?: Options): Promise<{
     instance: WebAssembly.Instance,
     exports: Exports
 }>
+/* #endif */

Plugins/PackageToJS/Templates/platforms/node.d.ts

@@ -1,14 +1,16 @@
 import type { InstantiateOptions } from "../instantiate.js"
 import type { Worker } from "node:worker_threads"
 
-export function defaultNodeSetup(options: {
+export type DefaultNodeSetupOptions = {
 /* #if IS_WASI */
     args?: string[],
 /* #endif */
     onExit?: (code: number) => void,
 /* #if USE_SHARED_MEMORY */
     spawnWorker: (module: WebAssembly.Module, memory: WebAssembly.Memory, startArg: any) => Worker,
 /* #endif */
-}): Promise<InstantiateOptions>
+}
+
+export function defaultNodeSetup(options: DefaultNodeSetupOptions): Promise<InstantiateOptions>
 
 export function createDefaultWorkerFactory(preludeScript: string): (module: WebAssembly.Module, memory: WebAssembly.Memory, startArg: any) => Worker

Plugins/PackageToJS/Templates/platforms/node.js

@@ -139,7 +139,9 @@ export async function defaultNodeSetup(options) {
 
     return {
         module,
+/* #if HAS_IMPORTS */
         getImports() { return {} },
+/* #endif */
 /* #if IS_WASI */
         wasi: Object.assign(wasi, {
             setInstance(instance) {