/**
 * Compose functions left-to-right. The first function can take multiple arguments,
 * subsequent functions take a single argument (the result of the previous function).
 *
 * @param fns - Functions to compose
 * @returns Composed function
 *
 * @example
 * const process = pipeFast(
 *   (s: string) => s.trim(),
 *   s => s.toLowerCase(),
 *   s => s.split(' ')
 * );
 * process('  HELLO WORLD  '); // ['hello', 'world']
 */
export declare function pipeFast<A extends unknown[], B>(f1: (...args: A) => B): (...args: A) => B;
export declare function pipeFast<A extends unknown[], B, C>(f1: (...args: A) => B, f2: (b: B) => C): (...args: A) => C;
export declare function pipeFast<A extends unknown[], B, C, D>(f1: (...args: A) => B, f2: (b: B) => C, f3: (c: C) => D): (...args: A) => D;
export declare function pipeFast<A extends unknown[], B, C, D, E>(f1: (...args: A) => B, f2: (b: B) => C, f3: (c: C) => D, f4: (d: D) => E): (...args: A) => E;
export declare function pipeFast<A extends unknown[], B, C, D, E, F>(f1: (...args: A) => B, f2: (b: B) => C, f3: (c: C) => D, f4: (d: D) => E, f5: (e: E) => F): (...args: A) => F;
/**
 * Compose functions right-to-left. The last function can take multiple arguments,
 * preceding functions take a single argument.
 *
 * @param fns - Functions to compose
 * @returns Composed function
 *
 * @example
 * const process = composeFast(
 *   s => s.split(' '),
 *   s => s.toLowerCase(),
 *   (s: string) => s.trim()
 * );
 * process('  HELLO WORLD  '); // ['hello', 'world']
 */
export declare function composeFast<A extends unknown[], B>(f1: (...args: A) => B): (...args: A) => B;
export declare function composeFast<A extends unknown[], B, C>(f2: (b: B) => C, f1: (...args: A) => B): (...args: A) => C;
export declare function composeFast<A extends unknown[], B, C, D>(f3: (c: C) => D, f2: (b: B) => C, f1: (...args: A) => B): (...args: A) => D;
export declare function composeFast<A extends unknown[], B, C, D, E>(f4: (d: D) => E, f3: (c: C) => D, f2: (b: B) => C, f1: (...args: A) => B): (...args: A) => E;
export declare function composeFast<A extends unknown[], B, C, D, E, F>(f5: (e: E) => F, f4: (d: D) => E, f3: (c: C) => D, f2: (b: B) => C, f1: (...args: A) => B): (...args: A) => F;
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