web-ifc-viewer/dist/utils/LiteEvent.js

IFC viewer

// -------------------------------------------------------------------------------------------
// Credit to Jason Kleban: https://gist.github.com/JasonKleban/50cee44960c225ac1993c922563aa540
// -------------------------------------------------------------------------------------------
export class LiteEvent {
    constructor() {
        this.handlers = [];
        this.trigger = ((data) => {
            // @ts-ignore
            this.handlers.slice(0).forEach((h) => h(data));
        });
    }
    on(handler) {
        this.handlers.push(handler);
    }
    off(handler) {
        this.handlers = this.handlers.filter((h) => h !== handler);
    }
    expose() {
        return this;
    }
}
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