Make Node.js use http_proxy, https_proxy and no_proxy environment variables

Unfortunately, the Node.js runtime does not support configuring HTTP proxying using environment variables out of the box (see nodejs/node#8381 and nodejs/node#15620). Request library support is mixed:

• request does (request/request#1096)
• node-fetch does not (node-fetch/node-fetch#195) (see below)
• got does not (sindresorhus/got#79) (see below)

Any library which provides a way to pass an http.Agent which can support environmentally-configured proxies, such as:

• tunnel
• proxy-agent
• global-agent

For example:

import fetch from 'node-fetch';
import ProxyAgent from 'proxy-agent';

const response = await fetch('https://example.com', { agent: new ProxyAgent() });
const body = await response.text();

If you can not pass an Agent, or can't modify the code at all, you may want to consider global-agent which can be used as a pre-loaded module to proxy all requests (configured by the GLOBAL_AGENT_HTTP_PROXY environment variable):

export GLOBAL_AGENT_HTTP_PROXY=http://proxy.example.com
node --require global-agent/bootstrap mycode.js

Alternatively, if your system supports LD_PRELOAD or DYLD_INSERT_LIBRARIES, you could use a general-purpose proxifier such as ProxyChains-NG (or the original ProxyChains).

Just in case someone arrives here, it seems it was already added to request.js in https://github.com/request/request/pull/1096