get-url-proxy will return the applicable proxy to use for a given URL based on NO_PROXY and PROT_PROXY environment variables
npm install get-url-proxyget-url-proxy will return the applicable proxy to use for a given URL based on NO_PROXY and {PROTOCOL}_PROXY environment variables.
``js
console.log(process.env.HTTP_PROXY) // "http://proxy:8080/"
console.log(process.env.NO_PROXY); // ".foo.com,192.168.1."
// requires protocol & domain
var getProxy = require('get-url-proxy');
getProxy('http://foo.com/'); // null
noProxy('https://www.google.com/'); // "http://proxy:8080/"
// the cached wrapper will cache the last 100 resources
var cachedProxy = require('get-url-proxy/cached');
// protocol only, without NO_PROXY check
var protocolProxy = require('get-url-proxy/protocol');
protocolProxy('https'): // "http://proxy:8080/"
`
The following search order will be used, generally speaking...
NO_PROXY exclusion will return null*PROTOCOL_PROXY
*
*
*
*
* will be returned with no match.
For web based protocols, additional/similar protocols will be searched as a fallback.
* HTTP -> [HTTP, HTTPS]HTTPS
* -> [HTTPS, HTTP]WS
* -> [WS, WSS, HTTPS, HTTP]WSS
* -> [WSS, WS, HTTPS, HTTP]SFTP
* -> [SFTP, SSH]
All other protocols will only search for their own protocol specifically, falling back to ALL_PROXY
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#### WARNING
If you are using a node version prior to Node 8, you should install url-parse` as a dependency.