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      Front End Engineer Interview

      Flatten Array, Create Emitter

      Interview Answers

      Anonymous

      24 May 2018

      Shortest way to flatten an array I could come up with: function flatten(a) { return Array.isArray(a) ? [].concat(...a.map(flatten)) : a; }

      1

      Anonymous

      20 Feb 2019

      to flatten nested arrays : const flatten = array => { return array.reduce((elem, acc) => { return elem.concat(Array.isArray(acc) ? flatten(acc) : acc); }, []); }

      1
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