const sdk = require('node-appwrite');
const client = new sdk.Client()
.setEndpoint('https://<REGION>.cloud.appwrite.io/v1') // Your API Endpoint
.setProject('<YOUR_PROJECT_ID>') // Your project ID
.setKey('<YOUR_API_KEY>'); // Your secret API key
const project = new sdk.Project(client);
const result = await project.deleteVariable({
variableId: '<VARIABLE_ID>'
});