Contents

export default class Flattener {
  flatten(arr) {
    return arr
      .reduce((acc, el) =>
        Array.isArray(el)
          ? acc.concat(this.flatten(el))
          : acc.concat(el),
        [])
      .filter(el => el !== null && el !== undefined);
  }
}

Version data entries

185 entries across 185 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.179	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.178	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.177	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.176	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.175	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.174	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.173	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.172	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.171	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.170	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.169	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.167	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.166	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.165	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.164	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.163	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.162	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.161	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.160	tracks/ecmascript/exercises/flatten-array/example.js