### Install Node.js Client via npm

Source: https://github.com/inwx/nodejs-client/blob/master/README.md

Install the domrobot-client package using npm. This is the recommended method for integrating the client into your Node.js project. It fetches the latest version from the npm registry.

```bash
npm install --save domrobot-client
```

--------------------------------

### Node.js API Client Example

Source: https://github.com/inwx/nodejs-client/blob/master/README.md

Example demonstrating how to use the INWX Node.js client. It covers logging in, checking domain availability using the 'domain.check' API method, and handling API responses and errors. The client defaults to the test API (OT&E) but can be configured for the live API.

```typescript
import { ApiClient, Language } from 'domrobot-client';

const username = '';
const password = '';
const sharedSecret = ''; // only needed for 2FA. 
const domain = 'my-test-domain-' + Math.round(Math.random() * 1e8) + '.com'; // the domain which will be checked. 

const asyncFunc = async () => {
    // By default your ApiClient uses the test api (OT&E). If you want to use the production/live api
    // we have a constant named API_URL_LIVE in the ApiClient class. Just set apiUrl=ApiClient.API_URL_LIVE and you're good.
    const apiClient = new ApiClient(ApiClient.API_URL_OTE, Language.EN, true);

    const loginResponse = await apiClient.login(username, password, sharedSecret);
    if (loginResponse.code !== 1000) {
        throw new Error(`Api login error. Code: ${loginResponse.code}  Message: ${loginResponse.msg}`);
    }

    // Make an api call and save the result in a variable.
    // We want to check if a domain is available, so we call the api method 'domain.check'.
    const domainCheckResponse = await apiClient.callApi('domain.check', { domain });
    if (domainCheckResponse.code !== 1000) {
        throw new Error(`Api error while checking domain status. Code: 
                            ${domainCheckResponse.code}  Message: ${domainCheckResponse.msg}`);
    }

    // get the first domain in the result array 'domain'
    const checkedDomain = domainCheckResponse.resData.domain[0];
    if (checkedDomain.avail === 1) {
        console.log(`${domain} is still available!`);
    } else if (checkedDomain.avail === -1) {
        console.log(`Availability of ${domain} could not be checked.`);
    } else {
        console.log(`Unfortunately, ${domain} is already registered.`);
    }
};

// call the async function
asyncFunc();

```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.