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import { curry } from './curry.js'import { _indexOf } from './equals.js'
export function differenceWithFn(  fn, a, b){  const willReturn = []  const [ first, second ] = a.length > b.length ? [ a, b ] : [ b, a ]
  first.forEach(item => {    const hasItem = second.some(secondItem => fn(item, secondItem))    if (!hasItem && _indexOf(item, willReturn) === -1){      willReturn.push(item)    }  })
  return willReturn}
export const differenceWith = curry(differenceWithFn)