import { ElementRef } from '@angular/core';
import * as i0 from "@angular/core";
export declare class PatternDirective {
    el: ElementRef;
    private navigationKeys;
    set regPattern(reg: string);
    $regPatternString: string;
    $regPattern: RegExp;
    inputElement: HTMLElement;
    constructor(el: ElementRef);
    onKeyDown(e: KeyboardEvent): void;
    onPaste(event: ClipboardEvent): void;
    onDrop(event: DragEvent): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<PatternDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<PatternDirective, "[pattern-directive]", never, { "regPattern": { "alias": "regPattern"; "required": false; }; }, {}, never, never, false, never>;
}