/**
 * Partitions an array into two arrays based on a predicate function.
 * More efficient than using filter twice.
 * @param array - Array to partition
 * @param predicate - Function to test each element
 * @returns Tuple of [passing items, failing items]
 * @example
 * ```tsx
 * const [evens, odds] = partition([1, 2, 3, 4], n => n % 2 === 0)
 * // evens: [2, 4], odds: [1, 3]
 * ```
 */
export declare function partition<T>(array: T[], predicate: (item: T) => boolean): [T[], T[]];