redis-smq-common/dist/esm/src/timer/timer.js

RedisSMQ Common Library provides many components that are mainly used by RedisSMQ and RedisSMQ Monitor.

import { EventEmitter } from '../event/index.js';
import { TimerError } from './errors/index.js';
export class Timer extends EventEmitter {
    timer = null;
    onTick = () => {
        if (!this.timer)
            this.emit('error', new TimerError('Expected a non-empty timer property'));
        else {
            const { fn, periodic } = this.timer;
            if (!periodic)
                this.timer = null;
            fn();
        }
    };
    setTimeout(fn, timeout) {
        if (this.timer) {
            return false;
        }
        this.timer = {
            timer: setTimeout(() => this.onTick(), timeout),
            periodic: false,
            fn,
        };
        return true;
    }
    setInterval(fn, interval = 1000) {
        if (this.timer) {
            return false;
        }
        this.timer = {
            timer: setInterval(() => this.onTick(), interval),
            periodic: true,
            fn,
        };
        return true;
    }
    reset() {
        if (this.timer) {
            const { timer, periodic } = this.timer;
            if (periodic)
                clearInterval(timer);
            else
                clearTimeout(timer);
            this.timer = null;
        }
    }
}
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