text: //// [tests/cases/compiler/importHelpersSystem.ts] ////
  
  //// [a.ts]
  export class A { }
  
  //// [b.ts]
  import { A } from "./a";
  export * from "./a";
  export class B extends A { }
  
  //// [tslib.d.ts]
  export declare function __extends(d: Function, b: Function): void;
  export declare function __assign(t: any, ...sources: any[]): any;
  export declare function __decorate(decorators: Function[], target: any, key?: string | symbol, desc?: any): any;
  export declare function __param(paramIndex: number, decorator: Function): Function;
  export declare function __metadata(metadataKey: any, metadataValue: any): Function;
  export declare function __awaiter(thisArg: any, _arguments: any, P: Function, generator: Function): any;
  
  
  //// [a.js]
  System.register([], function (exports_1, context_1) {
      "use strict";
      var __moduleName = context_1 && context_1.id;
      var A;
      return {
          setters: [],
          execute: function () {
              A = /** @class */ (function () {
                  function A() {
                  }
                  return A;
              }());
              exports_1("A", A);
          }
      };
  });
  //// [b.js]
  System.register(["tslib", "./a"], function (exports_1, context_1) {
      "use strict";
      var __moduleName = context_1 && context_1.id;
      var tslib_1, a_1, B;
      var exportedNames_1 = {
          "B": true
      };
      function exportStar_1(m) {
          var exports = {};
          for (var n in m) {
              if (n !== "default" && !exportedNames_1.hasOwnProperty(n)) exports[n] = m[n];
          }
          exports_1(exports);
      }
      return {
          setters: [
              function (tslib_1_1) {
                  tslib_1 = tslib_1_1;
              },
              function (a_1_1) {
                  a_1 = a_1_1;
                  exportStar_1(a_1_1);
              }
          ],
          execute: function () {
              B = /** @class */ (function (_super) {
                  tslib_1.__extends(B, _super);
                  function B() {
                      return _super !== null && _super.apply(this, arguments) || this;
                  }
                  return B;
              }(a_1.A));
              exports_1("B", B);
          }
      };
  });
  