WasmError: Missing import: function about wasm HOT 5 OPEN

The code you linked to is generated by emscripten. I guess for dart you have to do it manually. The only problem is I have no idea what the functions in the wasm module are as the names are obfuscated. Thanks for the pointers tho!

from wasm.

a::a(int32, int32, int32, int32) is a function import, so you need to bind a Dart function to it in the WasmInstanceBuilder (the thing that the builder() function returns).

When you run it in JS, where is emscripten getting that function from?

from wasm.

I am not very familiar with wasm and emscripten.. The project (trust wallet core) that im compiling to wasm exposes functions through a C interface and has a set of .proto files. Is there a way to automatically bind generated dart protobuf code with the wasm module? It seems the javascript project does that.

"use strict";
// Copyright © 2017-2022 Trust Wallet.
//
// This file is part of Trust. The full Trust copyright notice, including
// terms governing use, modification, and redistribution, is contained in the
// file LICENSE at the root of the source code distribution tree.
Object.defineProperty(exports, "__esModule", { value: true });
exports.WalletCore = exports.TW = void 0;
var core_proto_1 = require("./generated/core_proto");
Object.defineProperty(exports, "TW", { enumerable: true, get: function () { return core_proto_1.TW; } });
var WalletCore = require("./lib/wallet-core"); //! .wasm file and js glue code
exports.WalletCore = WalletCore;

Edit: React JS example that uses the javascript project

from wasm.

I'm guessing it binds those function imports somewhere in this file. You need to provide those function imports, like this:

walletCoreWasm = mod.builder()
      ..addFunction('a', 'a', (int arg1, int arg2, int arg3, int arg4) {
        // Call your functions, eg the generated dart protobuf code.
      }))
    .build();

There's no way of automatically binding those functions.

from wasm.

@hnord-vdx Did you find a way to use Wallet core in Flutter web?

from wasm.