plain-observable/lib/subject.js

A simple implementation of observable pattern

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const observer_1 = require("./observer");
class Subject {
    constructor() {
        this.observers = new observer_1.ObserversList();
    }
    register(obs) {
        this.observers.add(obs);
        return () => {
            this.unregister(obs);
        };
    }
    notify(value) {
        for (let i = 0; i < this.observers.size; i++) {
            this.observers.get(i).update(value);
        }
    }
    get size() {
        return this.observers.size;
    }
    unregister(obs) {
        this.observers.remove(obs);
    }
}
exports.default = Subject;