/**
 * Fluid Typography Helpers
 * ------------------------
 * Generates responsive `clamp()` expressions that scale between two font sizes
 * across a viewport range.
 */
export interface FluidTypographyOptions {
    minSize: number;
    maxSize: number;
    minViewport?: number;
    maxViewport?: number;
    unit?: 'rem' | 'px' | 'em';
    precision?: number;
}
export declare function fluidTypography(options: FluidTypographyOptions): string;
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