import * as i0 from "@angular/core";
export declare class SdThemeProvider {
    dark: import("@angular/core").WritableSignal<boolean>;
    readonly fontSizePresets: readonly number[];
    fontSize: import("@angular/core").WritableSignal<number>;
    constructor();
    increaseFontSize(): void;
    decreaseFontSize(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<SdThemeProvider, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<SdThemeProvider>;
}
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