README
fetch-enhanced
fetch-enhanced
wraps a provided fetch
-like module like node-fetch and adds:
- HTTP Proxy discovery from standard environment variables
- HTTP Request Timeout support
- Accessible agent options
Usage
npm i fetch-enhanced node-fetch
import nodeFetch from "node-fetch";
import fetchEnhanced from "fetch-enhanced";
const fetch = fetchEnhanced(nodeFetch);
await fetch("https://example.com");
API
fetchEnhanced(fetchImplementation, [opts])
- fetchImplementation: Function A
fetch
-like module that takes(url, opts)
and aagent
option. opts
ObjectagentCacheSize
: number Size of the agent cache. Default:512
.
Returns: A wrapped fetch
function.
fetch(url, [opts])
opts
Objecttimeout
: number Request timeout in milliseconds. Default: 0 (meaning no timeout).agent
: http.Agent Custom HTTP agent. When specified, proxy discovery will no longer work.agentOpts
: object Agent options. Default:{maxSockets: 64, keepAlive: false}
- Any valid
fetch
module option, like fornode-fetch
TimeoutError
Error class that can be used for err instanceof TimeoutError
:
import {TimeoutError} from "fetch-enhanced";
try {
await fetch("https://example.com", {timeout: 0});
} catch (err) {
console.log(err instanceof TimeoutError);
// => true
}
fetch.clearCache()
Clear the agent cache and destroys all cached agents. This is generally only neccessary when the proxy environment variables are expected to change during runtime.
process.env.HTTPS_PROXY = "https://proxy1.dev";
await fetch("https://example.com");
fetch.clearCache();
process.env.HTTPS_PROXY = "https://proxy2.dev";
await fetch("https://example.com");
© silverwind, distributed under BSD licence