convert Array#forEach(async/await) to await Promise.all(Arraymap(async/await))

a.js

/*
        json.forEach(async (raw) => {
          const segment = new Segment(this._net);
          await segment.init(raw);
          this._hash[raw.id] = segment;
          this._list.push(segment);
        });
 */
        await Promise.all( json.map(async (raw, index) => {
          const segment = new Segment(this._net);
          await segment.init(raw);
          this._hash[raw.id] = segment;
          this._list[index] = segment;
        }) );

        this._list.sort((a, b) => a.sid - b.sid);