src/fable-library/Types.js
function inherits(subClass, superClass) {
  // if (typeof superClass !== "function" && superClass !== null) {
  //   throw new TypeError(
  //     "Super expression must either be null or a function, not " +
  //       typeof superClass
  //   );
  // }
  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      enumerable: false,
      writable: true,
      configurable: true,
    },
  });
  // if (superClass)
  //   Object.setPrototypeOf
  //     ? Object.setPrototypeOf(subClass, superClass)
  //     : (subClass.__proto__ = superClass);
}
function inherits(subClass, superClass) {
  // if (typeof superClass !== "function" && superClass !== null) {
  //   throw new TypeError(
  //     "Super expression must either be null or a function, not " +
  //       typeof superClass
  //   );
  // }
  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      enumerable: false,
      writable: true,
      configurable: true,
    },
  });
  // if (superClass)
  //   Object.setPrototypeOf
  //     ? Object.setPrototypeOf(subClass, superClass)
  //     : (subClass.__proto__ = superClass);
}
function inherits ( subClass , superClass ) { // if (typeof superClass !== "function" && superClass !== null) { //   throw new TypeError( //     "Super expression must either be null or a function, not " + //       typeof superClass //   ); // } subClass . prototype = Object . create ( superClass && superClass . prototype , { constructor : { value : subClass , enumerable : false , writable : true , configurable : true , } , } ) ; // if (superClass) //   Object.setPrototypeOf //     ? Object.setPrototypeOf(subClass, superClass) //     : (subClass.__proto__ = superClass); }
Taken from Babel helpers
Taken from Babel helpers