RFC: <script type="ts/module">

[gertcuykens]

If polymer-analyzer can parse typescript we can make the first <script type="ts/module"> proof of concept with the following benefits.

• more type safety and intellisense on <script type="ts/module"> content in html files
• option to transpile example.ts.html to example.html with the <script type="ts/module"> content and script type replaced to a normal <script>

filename: example.ts.html

<link rel="import" href="../polymer/polymer-element.html">
<dom-module id="hello-world">
  <template>
    <style>
      :host {
        display: block;
        box-sizing: border-box;
        border: 1px solid red;
        margin-top: 10px;
        padding: 0px 5px;
      }
    </style>
    <p>Test <slot></slot></p>
  </template>
  <script type="ts/module">
    class HelloWorld extends Polymer.Element {
      _hello: string = 'Hello World'
      static get is() {
        let test: string = 'test intelli'
        test.toUpperCase()
        return 'hello-world';
      }
      static get config() {
        return {};
      }
      constructor() {
        super();
      }
      connectedCallback() {
        super.connectedCallback();
      }
    }
    customElements.define(HelloWorld.is, HelloWorld);  
  </script>
</dom-module>

Making polymer-analyzer understand typescript is the first step that needs to be done if we want this to work. All editor plugins depend on the analyser to make sense of <script type="ts/module"> content.

Technical Note: (Based on mhegazy from Microsoft see link below)
If you specify scriptKindName as JS/TS in the TS language service you should be able to buffer the <script type="ts/module"> content directly to get typescript information.

[justinfagnani]

This is blocked on initial TypeScript analysis support.

[matthewp]

Is there an existing issue for support of <script type="module">? I couldn't find one.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.