adding packages

deprecated/flutter_wasm_interop/lib/flutter_wasm_interop.dart

@@ -0,0 +1,5 @@
+library flutter_wasm_interop;
+
+export 'src/unsupported.dart'
+    if (dart.library.html) 'src/web.dart'
+    if (dart.library.io) 'src/io.dart';

deprecated/flutter_wasm_interop/lib/src/impl.dart

@@ -0,0 +1,7 @@
+abstract class WasmImpl {
+  WasmImpl.fromAssets(String path);
+  Future<bool> init();
+  bool get isReady;
+  Future function(String name);
+  Future functionParam(String name, dynamic input);
+}

deprecated/flutter_wasm_interop/lib/src/io.dart

@@ -0,0 +1,27 @@
+import 'impl.dart';
+
+class WasmLoader extends WasmImpl {
+  @override
+  Future function(String name) {
+    // TODO: implement function
+    throw UnimplementedError();
+  }
+
+  @override
+  Future functionParam(String name, input) {
+    // TODO: implement functionParam
+    throw UnimplementedError();
+  }
+
+  @override
+  // TODO: implement isReady
+  bool get isReady => throw UnimplementedError();
+
+  WasmLoader.fromAssets(String path) : super.fromAssets(path);
+
+  @override
+  Future<bool> init() {
+    // TODO: implement init
+    throw UnimplementedError();
+  }
+}

deprecated/flutter_wasm_interop/lib/src/unsupported.dart

@@ -0,0 +1,27 @@
+import 'impl.dart';
+
+class WasmLoader extends WasmImpl {
+  @override
+  Future function(String name) {
+    // TODO: implement function
+    throw UnimplementedError();
+  }
+
+  @override
+  Future functionParam(String name, input) {
+    // TODO: implement functionParam
+    throw UnimplementedError();
+  }
+
+  @override
+  // TODO: implement isReady
+  bool get isReady => throw UnimplementedError();
+
+  WasmLoader.fromAssets(String path) : super.fromAssets(path);
+
+  @override
+  Future<bool> init() {
+    // TODO: implement init
+    throw UnimplementedError();
+  }
+}

deprecated/flutter_wasm_interop/lib/src/web.dart

@@ -0,0 +1,40 @@
+// Import dart:ffi.
+import 'dart:async';
+import 'package:flutter/services.dart';
+import 'package:wasm_interop/wasm_interop.dart';
+
+import 'impl.dart';
+
+class WasmLoader extends WasmImpl {
+  Instance _wasm;
+  String _path;
+
+  WasmLoader.fromAssets(String path)
+      : _path = path,
+        super.fromAssets(path);
+
+  @override
+  Future function(String name) {
+    final _func = _wasm.functions[name];
+    final _result = _func.call();
+    return _result;
+  }
+
+  @override
+  Future functionParam(String name, input) {
+    final _func = _wasm.functions[name];
+    final _result = _func.call(input);
+    return _result;
+  }
+
+  @override
+  bool get isReady => _wasm != null;
+
+  @override
+  Future<bool> init() async {
+    assert(_path != null);
+    final _data = await rootBundle.load(_path);
+    _wasm = await Instance.fromBufferAsync(_data.buffer);
+    return isReady;
+  }
+}