import { InjectionToken } from '@angular/core';
import { PathBased } from '../abstract/path-based';
import { LfI18n } from '../services/i18n.service';
import { LfStorage } from '../services/storage.service';
import * as i0 from "@angular/core";
/**
 * Injection token used to specify whether the i18n directive should render its
 * text as HTML (by default it renders it as plain text).
 */
export declare const LF_I18N_RENDER_AS_HTML: InjectionToken<boolean>;
/**
 * Directive used to render a translation within the element on which it is
 * applied. This directive uses `innerHTML` to render the translation text,
 * encoding the HTML by default. It is possible to render HTML by providing the
 * option.
 */
export declare class I18nDirective extends PathBased {
    private i18nRenderAsHtml;
    /**
     * Key used to access the i18n value.
     */
    key: string;
    /**
     * Whether to use the state to cache the value of the translation.
     */
    useState: boolean;
    /**
     * Transformation function to apply to the i18n value.
     */
    transform?: (value: any) => string;
    constructor(parentPathBasedComponent: PathBased | null, lfStorage: LfStorage, lfI18n: LfI18n, i18nRenderAsHtml?: boolean);
    /**
     * Translation rendered by the directive.
     */
    get translation(): any;
    get _hostInnerHTML(): string;
    private get _translationFromState();
    private get _translationNotFromState();
    static ɵfac: i0.ɵɵFactoryDeclaration<I18nDirective, [{ optional: true; }, null, null, { optional: true; }]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<I18nDirective, "lf-i18n, [lfI18n]", ["lfI18n"], { "key": "key"; "useState": "useState"; "transform": "transform"; }, {}, never>;
}