asvny · August 22, 2016 15:01
diff --git a/flatten.js b/flatten.js
 const flatten = xs => {
  let next = (acc, xs) => xs.reduce((x, y) => Array.isArray(y)
   ? next(x, y)
   : (x[x.length] = y, x)
   , acc);

  return next([], xs);
 }
	const flatten = xs => {
	let next = (acc, xs) => xs.reduce((x, y) => Array.isArray(y)
	? next(x, y)
	: (x[x.length] = y, x)
	, acc);

	return next([], xs);
	}