signalk-server/dist/deltachain.js

An implementation of a [Signal K](http://signalk.org) server for boats.

"use strict";
/* eslint-disable @typescript-eslint/no-explicit-any */
Object.defineProperty(exports, "__esModule", { value: true });
class DeltaChain {
    dispatchMessage;
    chain;
    next;
    constructor(dispatchMessage) {
        this.dispatchMessage = dispatchMessage;
        this.chain = [];
        this.next = [];
    }
    process(msg) {
        return this.doProcess(0, msg);
    }
    doProcess(index, msg) {
        if (index >= this.chain.length) {
            this.dispatchMessage(msg);
            return;
        }
        this.chain[index](msg, this.next[index]);
    }
    register(handler) {
        this.chain.push(handler);
        this.updateNexts();
        return () => {
            const handlerIndex = this.chain.indexOf(handler);
            if (handlerIndex >= 0) {
                this.chain.splice(handlerIndex, 1);
                this.updateNexts();
            }
        };
    }
    updateNexts() {
        this.next = this.chain.map((chainElement, index) => {
            return (msg) => {
                this.doProcess(index + 1, msg);
            };
        });
    }
}
exports.default = DeltaChain;