import type { FnAny } from "@thi.ng/api" ; example ```ts
 * const neg = (x) => -x;
 * const sub = (a, b) => a - b;
 * const div = (a, b) => a / b;
 *
 * threadLast(
 *   5,
 *   neg,       // -5
 *   [sub, 10], // 20 - (-5) = 25
 *   [div, 10]  // 10 / 25 = 0.4
 * );
 *
 * // 0.4
 * ```
 *
 *  threadFirst param init param fns export const threadLast = ( init , ... fns ) => fns . reduce ( ( acc , expr ) => typeof expr === "function" ? expr ( acc ) : expr [ 0 ] ( ... expr . slice ( 1 ) , acc ) , init ) ;