Method map

src/Operations.js:68–74

(mapper, context)

  }

  map(mapper, context) {
    const mappedSequence = mapFactory(this, mapper, context);
    if (!this._useKeys) {
      mappedSequence.valueSeq = () => this._iter.toSeq().map(mapper, context);
    }
    return mappedSequence;
  }

  __iterate(fn, reverse) {
    return this._iter.__iterate((v, k) => fn(v, k, this), reverse);