Improve debug logging

[chimurai]

Current debug logging doesn't take into account the http-proxy options:

• prependPath (default: true)
• ignorePath (default: false)

Example:

The following setup will prepend the target's path to the proxy path, when target is configured with a path; i.e. "http://localhost:8080**/api**". Since prependPath defaults to true

proxy('/api', {target: 'http://localhost:8080/api', logLevel: 'debug'});

// Current
// [HPM] Proxy created: /api  ->  http://localhost:8080/api
// [HPM] GET /api/users/123 -> http://localhost:8080/api

// Expected
// [HPM] Proxy created: /api  ->  http://localhost:8080/api/api
// [HPM] GET /api/users/123 -> http://localhost:8080/api/api/users/123

[chimurai]

Fixed in 3.0.0-beta

https://github.com/chimurai/http-proxy-middleware/blob/master/recipes/logger.md

Additionally add environment variable to see verbose logging DEBUG=http-proxy-middleware*