date-fns/src/fp/_lib/convertToFP/index.js


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export default function convertToFP (fn, arity, a) {
  a = a || []

  if (a.length >= arity) {
    return fn.apply(null, a.slice(0, arity).reverse())
  }

  return function () {
    var args = Array.prototype.slice.call(arguments)
    return convertToFP(fn, arity, a.concat(args))
  }
}