@snap/camera-kit/dist/events/TypedEventTarget.js

Camera Kit Web

export class TypedEventTarget {
    constructor() {
        this.listeners = new Map();
        this.options = new Map();
    }
    addEventListener(type, callback, options) {
        var _a;
        const listener = callback;
        const listeners = (_a = this.listeners.get(type)) !== null && _a !== void 0 ? _a : [];
        this.listeners.set(type, [...listeners, listener]);
        if (options)
            this.options.set(listener, options);
    }
    dispatchEvent(event) {
        const listeners = this.listeners.get(event.type);
        if (!listeners)
            return true;
        listeners.forEach((listener) => {
            var _a;
            const options = (_a = this.options.get(listener)) !== null && _a !== void 0 ? _a : {};
            try {
                listener(event);
            }
            catch (error) {
                if (window)
                    window.dispatchEvent(new CustomEvent("error", { detail: error }));
            }
            if (options.once)
                this.removeEventListener(event.type, listener);
        });
        return true;
    }
    removeEventListener(type, callback) {
        const listener = callback;
        const listeners = this.listeners.get(type);
        if (!listeners)
            return;
        this.listeners.set(type, listeners.filter((l) => l !== listener));
        this.options.delete(listener);
    }
}
//# sourceMappingURL=TypedEventTarget.js.map