// eslint-disable-next-line @definitelytyped/prefer-declare-function
export const interpolatorSplineMonotone: (arr: number[]) => (t: number) => number;

// eslint-disable-next-line @definitelytyped/prefer-declare-function
export const interpolatorSplineMonotone2: (arr: number[]) => (t: number) => number;

// eslint-disable-next-line @definitelytyped/prefer-declare-function
export const interpolatorSplineMonotoneClosed: (arr: number[]) => (t: number) => number;