constructor() {
    this.inheritsNode = undefined;
    this.detectors = [
      new RequireUtilDetector(),
      new RequireUtilInheritsDetector(),
      new ImportUtilDetector(),
    ];
  }
Processes nodes to detect super classes and return information for later
transformation.

Detects:

  var util = require('util');
  ...
  util.inherits(Class1, Class2);