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-2.2.1.119	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.118	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.117	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.116	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.115	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.114	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.113	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.111	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.110	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.109	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.108	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.107	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.106	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.105	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.104	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.103	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.102	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.101	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.100	tracks/ecmascript/exercises/flatten-array/example.js
trackler-2.2.1.99	tracks/ecmascript/exercises/flatten-array/example.js