import { OnChanges, ElementRef } from '@angular/core';
import * as i0 from "@angular/core";
export declare class QrCodeComponent implements OnChanges {
    canvasRef: ElementRef<HTMLCanvasElement>;
    value: import("@angular/core").InputSignal<string>;
    size: import("@angular/core").InputSignal<number>;
    label: import("@angular/core").InputSignal<string>;
    foreground: import("@angular/core").InputSignal<string>;
    background: import("@angular/core").InputSignal<string>;
    ngOnChanges(): void;
    ngAfterViewInit(): void;
    private draw;
    private generateQrMatrix;
    private isFunctionModule;
    static ɵfac: i0.ɵɵFactoryDeclaration<QrCodeComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<QrCodeComponent, "ngx-qr-code", never, { "value": { "alias": "value"; "required": false; "isSignal": true; }; "size": { "alias": "size"; "required": false; "isSignal": true; }; "label": { "alias": "label"; "required": false; "isSignal": true; }; "foreground": { "alias": "foreground"; "required": false; "isSignal": true; }; "background": { "alias": "background"; "required": false; "isSignal": true; }; }, {}, never, never, true, never>;
}