/**
 * 从数组中按照特定算法提取一些值（允许同个索引重复提取）。
 * 算法的行为类似 flex 的 space-between。
 *
 * examples:
 * ```
 * console.log(getValuesFromArrayLikeFlexSpaceBetween([1, 2, 3, 4, 5, 6, 7], 1))
 * // [1]
 * console.log(getValuesFromArrayLikeFlexSpaceBetween([1, 2, 3, 4, 5, 6, 7], 3))
 * // [1, 4, 7]
 * console.log(getValuesFromArrayLikeFlexSpaceBetween([1, 2, 3, 4, 5, 6, 7], 4))
 * // [1, 3, 5, 7]
 * console.log(getValuesFromArrayLikeFlexSpaceBetween([1, 2, 3, 4, 5, 6, 7], 11))
 * // [1, 1, 2, 3, 3, 4, 5, 5, 6, 7, 7]
 * ```
 */
export declare function getValuesFromArrayLikeFlexSpaceBetween<T>(array: T[], columnCount: number): T[];
export declare function ensureFolderExist(fileOrFolderPath: string): void;
export declare function assert(assertion: unknown, msg?: string): asserts assertion;
export declare function assertStringType(data: unknown, msg?: string): asserts data is string;
export declare function assertNumberType(data: unknown, msg?: string): asserts data is number;
export declare function assertObjectType(data: unknown, msg?: string): asserts data is object;
export declare function createInvalidStreamChecker(): (ffmpegLogLine: string) => boolean;