@dcl/fetch-component

@dcl/fetch-component

Fetch component for core components library. It wraps the default Node fetch API with retry, timeout and default-options support, and is meant to be used by servers running on the default Node runtime.

Installation

npm install @dcl/fetch-component

Usage

import { createFetchComponent } from '@dcl/fetch-component'

const fetcher = createFetchComponent({
  defaultHeaders: { 'X-Custom': 'value' }
})

const response = await fetcher.fetch('https://api.example.com/data', {
  method: 'GET',
  attempts: 3,
  retryDelay: 100,
  timeout: 5000
})

const data = await response.json()

Features

• Backed by the default Node fetch API (no cross-fetch/node-fetch dependency)
• Automatic retries for idempotent requests (GET, HEAD, OPTIONS, PUT, DELETE)
• Retries both retryable status codes and network-level failures (DNS, connection refused/reset, socket hang up)
• Configurable retry delay and timeout per request
• Default headers and default request options shared across calls
• Type-safe through the shared IFetchComponent type from @dcl/core-commons

Request options

In addition to the standard RequestInit options, fetch accepts:

• attempts - number of attempts for idempotent requests before giving up
• retryDelay - milliseconds to wait between retry attempts
• timeout - milliseconds to wait before aborting the request
• abortController - an AbortController used to abort the request

Non-retryable status codes (400, 401, 403, 404) and non-idempotent methods are never retried. Network-level failures (a rejected fetch) are retried for idempotent methods up to attempts times; once the retries are exhausted the last network error is re-thrown.

License

Apache-2.0