index.ts

/**
 * @license
 * Copyright 2019 Stephane M. Catala
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * Limitations under the License.
 */
import compose from '../'
import log from './console'
const tap = fn => v => (fn(v), v)

const f = compose(
  tap(log('output:')),
  (s: string) => `${s.length}${s}`,
  (x: number) => '.'.repeat(x),
  x => 4 - x,
  tap(log('input:'))
)

  ;[0, 1, 2, 3, 4].forEach(f)