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/**
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 * @abstract
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 * @implements {EventTarget}
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 */
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export class AbstractEventTarget {
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    constructor() {
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        this.listeners = {};
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    }
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    addEventListener(type, callback, _options) {
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        if (!this.listeners[type]) {
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            this.listeners[type] = [];
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        }
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        this.listeners[type].push(callback);
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    }
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    dispatchEvent(event) {
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        if (!this.listeners[event.type] || this.listeners[event.type].length === 0) {
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            return true;
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        }
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        this.listeners[event.type].forEach(listener => {
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            listener(event);
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        });
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        return true;
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    }
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    removeEventListener(type, callback, _options) {
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        if (!this.listeners[type]) {
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            return;
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        }
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        const index = this.listeners[type].indexOf(callback);
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        if (index !== -1) {
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            this.listeners[type].splice(index, 1);
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        }
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    }
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}