export declare function degreesToRadians(degrees: number): number;
export declare function valueBetween(value: number, min: number, max: number): number;
export declare function extractPercentage(value: number, percentage: number): number;
export declare function bisectorAngle(startAngle: number, lengthAngle: number): number;
export declare function shiftVectorAlongAngle(angle: number, distance: number): {
    dx: number;
    dy: number;
};
export declare function isNumber(value: unknown): value is number;
/**
 * Conditionally return a prop or a function prop result
 */
export declare function functionProp<ReturnedProp, Payload>(prop: ((args: Payload) => ReturnedProp) | ReturnedProp, payload: Payload): ReturnedProp;