/**
 * Like the modulo operator (%), but works as expected for negative numbers.
 * @param num
 * @param modulus
 */
export declare const modulo: (num: number, modulus: number) => number;
interface FilterFunction {
    <Type>(item: Type): boolean;
}
/**
 * Given an array of items and an iteration direction, return the next index in that direction when looping is allowed.
 * @param items
 * @param currentItemFilterFunction
 * @param moveForward
 */
export declare const loopWrapIndex: <Type>(items: Array<Type>, currentItemFilterFunction: FilterFunction, moveForward: boolean) => number;
export {};
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