Method uploadMap

src/components/UploadMap.jsx:28–35

(e)

  }

  uploadMap(e) {
    var file = e.target.files[0];
    var reader = new FileReader();
    reader.readAsText(file, "UTF-8");
    reader.onload = (event) => {
      this.parseMap(event.target.result);
    };
  }

  parseMap(text) {
    if (!this.verifyMap(text)) {