cec3eaea83b877e95166533cf6edf825d8b1e79602907c292f4137f280efeaf4a9aedb119fe02c80215f2a51c87dfd0b396ee29c7d27d900d9b0eb83df0084 189 B

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  1. export default function map(arr, fn) {
  2. var res = [],
  3. i,
  4. arrLen = arr.length;
  5. for (i = 0; i < arrLen; ++i) {
  6. res.push(fn(arr[i], i));
  7. }
  8. return res;
  9. }