interface SpringParams {
    stiffness?: number;
    damping?: number;
    mass?: number;
    precision?: number;
}

interface TextMorphOptions {
    debug?: boolean;
    element: HTMLElement;
    locale?: Intl.LocalesArgument;
    scale?: boolean;
    duration?: number;
    ease?: string | SpringParams;
    disabled?: boolean;
    respectReducedMotion?: boolean;
    onAnimationStart?: () => void;
    onAnimationComplete?: () => void;
}

declare class MorphController {
    private instance;
    private lastText;
    private configKey;
    attach(element: HTMLElement, options: Omit<TextMorphOptions, "element">): void;
    update(text: string): void;
    needsRecreate(options: Omit<TextMorphOptions, "element">): boolean;
    destroy(): void;
    static serializeConfig(options: Omit<TextMorphOptions, "element">): string;
}

declare const DEFAULT_AS = "span";
declare const DEFAULT_TEXT_MORPH_OPTIONS: {
    readonly debug: false;
    readonly locale: "en";
    readonly duration: 400;
    readonly scale: true;
    readonly ease: "cubic-bezier(0.19, 1, 0.22, 1)";
    readonly disabled: false;
    readonly respectReducedMotion: true;
};
declare class TextMorph {
    private element;
    private options;
    private data;
    private currentMeasures;
    private prevMeasures;
    private isInitialRender;
    private reducedMotion;
    constructor(options: TextMorphOptions);
    destroy(): void;
    private isDisabled;
    update(value: HTMLElement | string): void;
    private createTextGroup;
    private updateStyles;
}

export { DEFAULT_AS, DEFAULT_TEXT_MORPH_OPTIONS, MorphController, type SpringParams, TextMorph, type TextMorphOptions };