One Way Sync Script from Google Sheets App To Google Firebase RTDB

appsscript.json

{
  "timeZone": "America/New_York",
  "exceptionLogging": "STACKDRIVER",
  "runtimeVersion": "V8",
  "dependencies": {},
  "oauthScopes": [
    "https://www.googleapis.com/auth/firebase.database",
    "https://www.googleapis.com/auth/userinfo.email",
    "https://www.googleapis.com/auth/spreadsheets",
    "https://www.googleapis.com/auth/script.scriptapp",
    "https://www.googleapis.com/auth/script.external_request"
  ],
  "executionApi": {
    "access": "DOMAIN"
  }
}

Code.gs

function myOnEdit() {
    const RTDB_URL = "path/to/your/realtimedb/node.json";

    const sheet = SpreadsheetApp.getActiveSheet();
    let data = sheet.getDataRange().getValues();
    
    let payload = {};
    for (let i = 0; i < data.length; i++) {
      
      payload[data[i][0]] = {
        meal: data[i][1],
        mealType: data[i][2],
        meatType: data[i][3]
      }
    }
    const token = ScriptApp.getOAuthToken();
    const url = RTDB_URL + "?access_token=" + encodeURIComponent(token);
    const response = UrlFetchApp.fetch(url, {
        method: 'put',
        payload: JSON.stringify(payload)
    })
    //Logger.log(response.getResponseCode())
}