libre-routing/src/lib/utils/dispatcher.js

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export class Dispatcher {
    constructor() {
        this.callbacks = {};
    }
    fire(event, data) {
        this.getEventCallbacks(event).forEach((callback) => callback(data));
    }
    on(event, callback) {
        this.callbacks[event] = [...this.getEventCallbacks(event), callback];
    }
    off(event, callback) {
        this.callbacks[event] = this.getEventCallbacks(event).filter((c) => c !== callback);
    }
    getEventCallbacks(event) {
        return this.callbacks[event] || [];
    }
}
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