shineout/css/utils/compose.js

Shein 前端组件库

"use strict";

exports.__esModule = true;
exports.compose = compose;

// type Fn<V, R> = (x: V) => R
// // @ts-expect-error T is an array :troll:
// type Q<T, V> = (...args: T) => V
//
// export function compose<T, V0, V1>(fn1: Fn<V0, V1>, fn0: Q<T, V0>): Q<T, V1>
// export function compose<T, V0, V1, V2>(fn2: Fn<V1, V2>, fn1: Fn<V0, V1>, fn0: Q<T, V0>): Q<T, V2>
// export function compose<T, V0, V1, V2, V3>(fn3: Fn<V2, V3>, fn2: Fn<V1, V2>, fn1: Fn<V0, V1>, fn0: Q<T, V0>): Q<T, V3>
// export function compose<T, V0, V1, V2, V3, V4>(
//   fn4: Fn<V3, V4>,
//   fn3: Fn<V2, V3>,
//   fn2: Fn<V1, V2>,
//   fn1: Fn<V0, V1>,
//   fn0: Q<T, V0>
// ): Q<T, V4>
// export function compose<T, V0, V1, V2, V3, V4, V5>(
//   fn5: Fn<V4, V5>,
//   fn4: Fn<V3, V4>,
//   fn3: Fn<V2, V3>,
//   fn2: Fn<V1, V2>,
//   fn1: Fn<V0, V1>,
//   fn0: Q<T, V0>
// ): Q<T, V5>
// export function compose<T, V0, V1, V2, V3, V4, V5, V6>(
//   fn6: Fn<V5, V6>,
//   fn5: Fn<V4, V5>,
//   fn4: Fn<V3, V4>,
//   fn3: Fn<V2, V3>,
//   fn2: Fn<V1, V2>,
//   fn1: Fn<V0, V1>,
//   fn0: Q<T, V0>
// ): Q<T, V6>
// export function compose<T, V0, V1, V2, V3, V4, V5, V6, V7>(
//   fn7: Fn<V6, V7>,
//   fn6: Fn<V5, V6>,
//   fn5: Fn<V4, V5>,
//   fn4: Fn<V3, V4>,
//   fn3: Fn<V2, V3>,
//   fn2: Fn<V1, V2>,
//   fn1: Fn<V0, V1>,
//   fn0: Q<T, V0>
// ): Q<T, V7>
// export function compose<T, V0, V1, V2, V3, V4, V5, V6, V7, V8>(
//   fn8: Fn<V7, V8>,
//   fn7: Fn<V6, V7>,
//   fn6: Fn<V5, V6>,
//   fn5: Fn<V4, V5>,
//   fn4: Fn<V3, V4>,
//   fn3: Fn<V2, V3>,
//   fn2: Fn<V1, V2>,
//   fn1: Fn<V0, V1>,
//   fn0: Q<T, V0>
// ): Q<T, V8>
// export function compose<T, V0, V1, V2, V3, V4, V5, V6, V7, V8, V9>(
//   fn9: Fn<V8, V9>,
//   fn8: Fn<V7, V8>,
//   fn7: Fn<V6, V7>,
//   fn6: Fn<V5, V6>,
//   fn5: Fn<V4, V5>,
//   fn4: Fn<V3, V4>,
//   fn3: Fn<V2, V3>,
//   fn2: Fn<V1, V2>,
//   fn1: Fn<V0, V1>,
//   fn0: Q<T, V0>
// ): Q<T, V9>
// export function compose<T, V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10>(
//   fn10: Fn<V9, V10>,
//   fn9: Fn<V8, V9>,
//   fn8: Fn<V7, V8>,
//   fn7: Fn<V6, V7>,
//   fn6: Fn<V5, V6>,
//   fn5: Fn<V4, V5>,
//   fn4: Fn<V3, V4>,
//   fn3: Fn<V2, V3>,
//   fn2: Fn<V1, V2>,
//   fn1: Fn<V0, V1>,
//   fn0: Q<T, V0>
// ): Q<T, V10>
function compose() {
  for (var _len = arguments.length, funcs = new Array(_len), _key = 0; _key < _len; _key++) {
    funcs[_key] = arguments[_key];
  }

  if (funcs.length === 0) {
    return function (arg) {
      return arg;
    };
  }

  var last = funcs[funcs.length - 1];
  var rest = funcs.slice(0, -1);
  return function () {
    return rest.reduceRight(function (composed, f) {
      return f(composed);
    }, last.apply(void 0, arguments));
  };
}