Access to Momo OpenAPI Documentation JavaScript

From the post man collection, you can generate a js script  

MoMo API PostMan Collection

Thank you. I’m looking at it

How do I create the Basic Auth for the createAccessToken function in js?

async createAccessToken(user_id: string, api_key: string) {

    const endpoint = `${environment.API_BASE2}/collection/token`;

    let my_headers = new Headers();

    my_headers.append("Ocp-Apim-Subscription-Key", this.subscription_key);

    const base64Credentials = Buffer.from(`${user_id}:${api_key}`).toString('base64');

    my_headers.append("Authorization", `Basic ${base64Credentials}`);

    const raw = "";

    let request_options = {

      method: 'POST',

      headers: my_headers,

      body: raw,

    };

    try {

      const response = await fetch(endpoint, request_options)

      if (response.status === 200) {

        const response_data = await  response.json();

        const access_token = response_data.accessToken;

        return access_token;

      }

    } catch (err) {

      console.log(`Error during createAccessToken: ${err}`);

      throw err;

    }

  }

the function above is what i’m using to retrieve the access code

i’m getting err code 400 “Bad request”

the request gets forwarded

fails after reaching the final endpoint as ‘BAD REQUEST’

Fixed now.