/**
 * Try to spread out the batches evenly.
 * That is, if the list has 11 items with a `maxPerBatch` of 5,
 * instead of getting `[5, 5, 1]` you would get `[4, 4, 3]`.
 */
export declare const SPREAD_BATCHES = "spread";
/**
 * Fill each batch to the maximum, except possibly the last.
 * That is, if the list has 11 items with a `maxPerBatch` of 5,
 * you would get `[5, 5, 1]`.
 */
export declare const FILL_BATCHES = "fill";
/**
 * Strategy for grouping array items into batches.
 */
export type ToBatchesMode = typeof SPREAD_BATCHES | typeof FILL_BATCHES;
/**
 * Group the given list into batches of the given maximum count,
 * optionally using a given strategy.
 */
export declare const toBatches: <T>(maxPerBatch: number, list: T[], mode?: ToBatchesMode) => T[][];
/**
 * Generate an array reducer which will group the given list into
 * batches of the given maximum count, optionally using a given strategy.
 * @example
 * const batches = list.reduce(...toBatchesReducer(5));
 */
export declare const toBatchesReducer: <T>(maxPerBatch: number, mode?: ToBatchesMode) => [reduce: (prev: T[][], cur: T, index: number, list: T[]) => T[][], initial: T[][]];
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