react-native-drawing/lib/dist/shared/utils/MessageSystem/index.js

A React Native library that provides a canvas to perform drawing actions

import { AnswerAck } from './AnswerAck';
import { Codec } from './Codec';
import { Receiver } from './Receiver';
import { ReceivedAck } from './ReceivedAck';
import { Sender } from './Sender';
export class MessageSystem {
    constructor(suscribe, sendData) {
        Object.defineProperty(this, "sender", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        Object.defineProperty(this, "receiver", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        // Building codec
        const codec = new Codec((struct) => {
            return MessageSystem.fixCodecStruct(struct);
        });
        // Building ACKs
        const receivedAck = new ReceivedAck(sendData);
        const answerAck = new AnswerAck(sendData);
        // Creating dependencies (both sides of Message System)
        this.sender = new Sender(codec, receivedAck, answerAck, sendData);
        this.receiver = new Receiver(codec, receivedAck, answerAck, suscribe);
    }
    /**
     * Send messages to the other side (ReactNative/WebView) and get back an answer
    */
    postMessage(target, data) {
        return this.sender.postMessage(target, data);
    }
    /**
     * Listen messages from the other side (ReactNative/WebView)
    */
    onMessage(target, handle) {
        this.receiver.onMessage(target, handle);
    }
    static fixCodecStruct(struct) {
        const { id, target, arg } = struct;
        return {
            id: (typeof id === 'number') ? id : NaN,
            target: (typeof target === 'string') ? target : '',
            arg,
        };
    }
}