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Blog - Achieving point-free JavaScript - lodash refactored
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
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