debug-callback

debug-callback outputs outstanding callbacks, results, errors, and call times and makes state dumps showing all callbacks that have not yet been called.

How?

var q = require('q');
var debug = require('debug-callback')('test-logger');
var cb = debug(function () {

}, 'arbitrary cb name for logging');

// sometime in the future call that callback
setTimeout(cb, 10000);

Example output

  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---

arbitrary callback label 1		0 seconds

----------------------------

 +0ms
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---

arbitrary callback label 1		0.001 seconds
arbitrary callback label 2		0.001 seconds

----------------------------

 +1ms
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---

arbitrary callback label 1		0.002 seconds
arbitrary callback label 2		0.001 seconds
arbitrary callback label 3		0 seconds

----------------------------

 +0ms
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---

arbitrary callback label 1		0.003 seconds
arbitrary callback label 2		0.002 seconds
arbitrary callback label 3		0.001 seconds
arbitrary callback label 4		0 seconds

----------------------------

 +1ms
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---

arbitrary callback label 1		0.003 seconds
arbitrary callback label 2		0.002 seconds
arbitrary callback label 3		0.001 seconds
arbitrary callback label 4		0 seconds
circular result		0 seconds

----------------------------

 +0ms
  debug-callback:test-logger success ('{ circle: [Circular] }'): circular result		0 seconds
 +1ms
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---

arbitrary callback label 1		0.004 seconds
arbitrary callback label 2		0.003 seconds
arbitrary callback label 3		0.002 seconds
arbitrary callback label 4		0.001 seconds

----------------------------

 +0ms
  debug-callback:test-logger success ('undefined'): arbitrary callback label 1		1.007 seconds
 +1s
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---

arbitrary callback label 2		1.007 seconds
arbitrary callback label 3		1.006 seconds
arbitrary callback label 4		1.005 seconds

----------------------------

 +1ms
  debug-callback:test-logger success ('undefined'): arbitrary callback label 2		2.005 seconds
 +998ms
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---

arbitrary callback label 3		2.005 seconds
arbitrary callback label 4		2.004 seconds

----------------------------

 +1ms
  debug-callback:test-logger failure ('[Error: intentional error]'): arbitrary callback label 3		3.002 seconds
 +998ms
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---

arbitrary callback label 4		3.002 seconds

----------------------------

 +0ms
  debug-callback:test-logger success ('<Buffer 61 73 64 66>'): arbitrary callback label 4		4.001 seconds
 +999ms
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---


----------------------------

 +0ms
    ✓ is an empty test (5020ms)
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---

arbitrary callback label 1		0 seconds

----------------------------

 +1s
  debug-callback:test-logger success ('\'string\''): arbitrary callback label 1		0 seconds
 +0ms
  debug-callback:test-logger 
--- OUTSTANDING CALLBACKS ---


----------------------------

 +0ms