create-varchar-attribute.md

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 databases = new sdk.Databases(client);

const result = await databases.createVarcharAttribute({
    databaseId: '<DATABASE_ID>',
    collectionId: '<COLLECTION_ID>',
    key: '',
    size: 1,
    required: false,
    default: '<DEFAULT>', // optional
    array: false, // optional
    encrypt: false // optional
});