import { CoreContext, CoreContextModule, ModulesRecordDefault, ReturnOfUseCtx } from "@vladkrutenyuk/three-kvy-core";
export declare class KeysInput extends CoreContextModule {
    readonly isKeysInput: true;
    /** (readonly) Flag to check if `shift` key is pressed */
    get shift(): boolean;
    /** (readonly) Flag to check if `alt` key is pressed */
    get alt(): boolean;
    /** (readonly) Flag to check if `ctrl` key is pressed */
    get ctrl(): boolean;
    /** (readonly) Flag to check if `meta` key is pressed */
    get meta(): boolean;
    _shift: boolean;
    _alt: boolean;
    _ctrl: boolean;
    _meta: boolean;
    private readonly _keys;
    constructor();
    protected useCtx(ctx: CoreContext<ModulesRecordDefault>): ReturnOfUseCtx;
    /**
     * Check if key is pressed now.
     * @param {globalThis.KeyboardEvent["code"]} key - current pressed key in format of {@link https://developer.mozilla.org/docs/Web/API/KeyboardEvent/code KeyboardEvent.code}. Example: `KeyW`, `KeyD`, `Digit2`, `Space`, etc.
     */
    has: (key: globalThis.KeyboardEvent["code"]) => boolean;
    private onKeyDown;
    private onKeyUp;
    private onBlur;
    private updFnKeys;
}