@gravity-ui/uikit/build/esm/components/Toaster/utilities/EventEmitter.js

Gravity UI base styling and components

export class EventEmitter {
    listeners;
    constructor() {
        this.listeners = [];
    }
    destroy() {
        this.listeners = [];
    }
    subscribe(listener) {
        if (typeof listener === 'function') {
            this.listeners.push(listener);
        }
        return () => {
            this.listeners = this.listeners.filter((currentListener) => listener !== currentListener);
        };
    }
    notify(data) {
        if (this.listeners.length === 0) {
            return false;
        }
        for (const listener of this.listeners) {
            listener(data);
        }
        return true;
    }
}
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