/**
 * Compute stretch range.
 */
interface StretchInputs {
    exponentialSteps?: boolean;
    stretch: [upper: number, lower: number] | number[];
    steps?: number;
}
/**
 * Get a list of values for stretch factor s (i.e. 1 + redshift (z)).
 *
 * @todo Implement linear steps (currently only exponential).
 * @todo Deal with negative step values.
 * @param inputs Sanitized inputs.
 * @returns Sanitized inputs.
 */
export declare const getStretchValues: (inputs: StretchInputs) => number[];
export {};
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