Blog - Achieving point-free JavaScript - lodash refactored

lead-time-lodash-refactored.js

import {pipe, pluck, over, head, last, spread} from 'lodash/fp';
import {daysSpent} from './utils/dates';

// leadTime : [{date: Date}] -> Number
const leadTime = pipe(
  pluck( 'date' ),         // first convert input into [Date]
  over( [ head, last ] ),  // then turns them to our arguments array [ FirstDate, LastDate ]
  spread( daysSpent )      // finally spread arguments to the function
);