code: function prepareDebug() {
    // Import Closure Library and deps.js.
    require('../src/wtf/bootstrap/node').importClosureLibrary([
      'wtf_js-deps.js'
    ]);
  
    // Disable asserts unless debugging - asserts cause all code to deopt.
    if (debugMode) {
      goog.require('goog.asserts');
      goog.asserts.assert = function(condition, opt_message) {
        console.assert(condition, opt_message);
        return condition;
      };
    } else {
      goog.DEBUG = false;
      goog.require('goog.asserts');
      goog.asserts.assert = function(condition) {
        return condition;
      };
    }
  
    // Load WTF and configure options.
    goog.require('wtf');
    wtf.NODE = true;
    goog.require('wtf.db.exports');
    goog.require('wtf.db.node');
  }
docs: Prepares the global context for running a tool with the debug WTF.