/**
 * Insert an element at specific index of the array.
 * (Throws if `index < 0 || index > array.length`.)
 */
export declare const insertElement: <T>(array: T[], index: number, element: T) => void;
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/**
 * Remove specific element(s) from the array.
 * (Default count: `Math.max(0, array.length - start)`;
 * throws if `start < 0 || count < 0 || start + count > array.length`.)
 */
export declare const removeElements: (array: any[], start: number, count?: number) => void;
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/**
 * Try to fit the given index into range [0, arraySize).
 * (Throws if `index < -arraySize || index >= arraySize`.)
 */
export declare const clampIndex: (index: number, arraySize: number) => number;
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/**
 * Pick a random element from the given array.
 * (Throws if `array.length === 0`.)
 */
export declare const pick: <T>(array: T[]) => T;
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/**
 * A stable in-place sorting function.
 * (Swaps two elements when `compare` returns a positive number.)
 */
export declare const sort: <T>(array: T[], compare: (a: T, b: T) => number) => void;
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/**
 * Shuffle the array elements in place.
 */
export declare const shuffle: <T>(array: T[]) => void;
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/**
 * Get an array containing the unique elements
 * of the given array.
 */
export declare const unique: <T>(array: T[]) => T[];