TypeScript is adding Object.defineProperty(exports, "__esModule", { value: true }); throwing an error

Question

I have recently updated typescript at the new version 2.2.1 after this I began to receive this error on the browser:

Uncaught (in promise) Error: "exports is not defined"

I noticed that typescript is adding this line after "use strict" at the began of the .js transpile file when the there is an import statement at the .ts file.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });

So I re installed the previous version 2.1.6 and that line disappeared and everything works fine again.

Is this an expected behavior of this new version? How could I go throw this?

By the way I'm using SystemJS with JSPM

Answer 1

I find the same issue. Uncaught ReferenceError: exports is not defined and require

This solution is work for me. I change the setting of "tsconfig.json"

{
  "compilerOptions": {
    "target": "es5",
    "module": "umd"
  }
}