gistfile1.txt

var consoleLogSpy = function() {

  return {
    start: _start,
    stop: _stop
  };

  function _start( callback ) {
    console.log = function( originalConsoleLog ) {
      console._originalLog = originalConsoleLog;
      return function(){
        callback.apply( callback, arguments );
        return originalConsoleLog.apply( console, originalConsoleLog );
      };
    }( console.log );
  }

  function _stop() {
    if ( console._originalLog ) {
      console.log = console._originalLog;
    }
  }

}();



console.log( 'test' );

consoleLogSpy.start( function() {
  debugger;
} );

console.log( 'hello world' );

consoleLogSpy.stop();

console.log( 'done' );