when I call async JavaScript，it can not send message to native,like this,but use 'Interactive_webview' can resolve it!

"use strict";
exports.__esModule = true;
var signature_adapter_1 = require("@waves/signature-adapter");

window.signGetMyOrderBookHistory = function (seed,type,timestamp,senderPublicKey) {

var adapter = new signature_adapter_1.SeedAdapter(seed);

var data = {
type: type,
data: {
timestamp: timestamp,
senderPublicKey: senderPublicKey
}
};

var signable = adapter.makeSignable(data);

signable.getSignature().then(function (signature) {

const nativeCommunicator = typeof webkit !== 'undefined' ? webkit.messageHandlers.native : window.native;
nativeCommunicator.postMessage(signature);
});

}

在插件的 WebView 中复现所提供的 window.signGetMyOrderBookHistory 流程，重点关注 signable.getSignature().then 以及 webkit.messageHandlers.native 或 window.native bridge。将其行为与 Interactive_webview 进行比较，然后验证在异步调用中签名能够到达 native 端。

由索引模型根据 Issue 内容生成。