Enable TypeScript in Browser by One Line Configuration

[huan]

When we want to run this typescript(with filename app/main.ts):

class Test {
  constructor() {
    console.log('Class Test constructor()')
  }
}

const t: Test
t = new Test()

I want to enable typescript in browser like this:

<script src='//npmcdn.com/pure-typescript'></script>
<script>
var pts = PureTypeScript('app/main.ts')
</script>

instead of this(need configure SystemJS), which I feel is too COMPLICATED!

<script src="https://code.angularjs.org/tools/system.js"></script>
<script src="https://code.angularjs.org/tools/typescript.js"></script>
<script>
  System.config({
    transpiler: 'typescript'
    , typescriptOptions: { emitDecoratorMetadata: true }
    , packages: {'app': {defaultExtension: 'ts'}} 
  })
  System.import('app/main')
              .catch(console.error.bind(console))
</script>

Cheers.