eprel-client

Status: Experimental

eprel-client is a typesafe and straightforward fetch client for interacting with the European Product Registry for Energy Labelling (EPREL) API using feature-fetch.

• EPREL API Docs

📖 Usage

Create a EPREL Client

Use createEPRELClient() to create a client with your API key.

import { createEPRELClient } from 'eprel-client';

const client = createEPRELClient({
	apiKey: 'YOUR_API_KEY'
});

Fetch Available Product Groups

Fetches the available product groups from the ERAP API.

const productGroupsResult = await client.getProductGroups();
const productGroups = productGroupsResult.unwrap();

Error Handling

Errors can occur during API requests, and the client will return detailed error information. Possible error types include:

• NetworkError: Indicates a failure in network communication, such as loss of connectivity
• RequestError: Occurs when the server returns a response with a status code indicating an error (e.g., 4xx or 5xx)
• FetchError: A general exception type that can encompass other error scenarios not covered by NetworkError or RequestError, for example when the response couldn't be parsed, ..

const productGroupsResult = await client.getProductGroups();

// First Approach: Handle error using `isErr()`
if (productGroupsResult.isErr()) {
	const { error } = productGroupsResult;
	if (error instanceof NetworkError) {
		console.error('Network error:', error.message);
	} else if (error instanceof RequestError) {
		console.error('Request error:', error.message, 'Status:', error.status);
	} else if (error instanceof FetchError) {
		console.error('Service error:', error.message, 'Code:', error.code);
	} else {
		console.error('Unexpected error:', error);
	}
}

// Second Approach: Unwrap response with `try-catch`
try {
	const productGroups = productGroupsResult.unwrap();
} catch (error) {
	if (error instanceof NetworkError) {
		console.error('Network error:', error.message);
	} else if (error instanceof RequestError) {
		console.error('Request error:', error.message, 'Status:', error.status);
	} else if (error instanceof FetchError) {
		console.error('Service error:', error.message, 'Code:', error.code);
	} else {
		console.error('Unexpected error:', error);
	}
}