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ColinFendrick/flattenArbitraryArray.md

Created September 21, 2017 13:42
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flattenArbitraryArray.md 
const flatten = (arr) => {
  return arr.reduce((flattenedArray, toFlatten) => {
    return flattenedArray.concat(Array.isArray(toFlatten) ? flatten(toFlatten) : toFlatten)
  }, []);
};
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