rem: dd = warn = TEST = ASSERT = function (){}; 
add: var ASSERT; var TEST;  if (DEBUG) { _dd_pfx = "cz: "; warn = function (msg) { dumpln ("** WARNING " + msg + " **"); } TEST = ASSERT = function _assert(expr, msg) { if (!expr) { dd("** ASSERTION FAILED: " + msg + " **\n" + getStackTrace() + "\n"); return false; } else { return true; } } } else dd = warn = TEST = ASSERT = function (){}; 
context:     dd = warn = TEST = ASSERT = function (){};
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