Module parse failed: Unexpected token

[Szegerege12]

Hello. Running this plugin even in new project created by gatsby init throws an error when i try send message:

Module parse failed: Unexpected token (4:13) You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders | import { WebClient } from "@slack/web-api" | > let channelID: string = process.env.CHANNEL_ID | let token: string = process.env.SLACK_TOKEN |

Is there any way to fix this?