import { ElementRef, OnChanges } from '@angular/core';
import * as i0 from "@angular/core";
export declare class MathJaxDirective implements OnChanges {
    private el;
    texExpression: string;
    mathJax: {
        hub: {
            queue: (param: Record<string, unknown>[]) => void;
        };
    };
    constructor(el: ElementRef);
    ngOnChanges(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<MathJaxDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<MathJaxDirective, "[MathJax]", never, { "texExpression": "MathJax"; }, {}, never>;
}