CUE Playground

The CUE Playground is a TypeScript application that is backed by a WASM-compiled Go application. React is used to render the UI, with Bootstrap providing the styling.

For now we use a simple three-pane UI:

+------------------------------------------------------------------+
|                                                                  |
|  Header                                                          |
|                                                                  |
+---------------------------------+--------------------------------+
|                                 |                                |
|  Input                          |    Output                      |
|                                 |                                |
+---------------------------------+--------------------------------+

The output is the JSON-marshalled result of the CUE input.

Developing locally

To develop the application locally, within the play directory at the repo root:

# Running dist.sh outside of the netlify environment works in a "dev"
# mode which ultimately results in running npm run serve
./dist.sh

Details

• The TypeScript single-page application entry point is src/index.tsx
• The entire application runs via a Webpack pipeline
• ...

Requirements for local development

• NodeJS >= v12.14.1
• Go (stable version)

TODO

• UI/UX
  • Support fmt and trim dropdown button option for the input pane contents
  • Support txtar input that then gets used as an overlay
  • Extend input dropdown to support different types of input (CUE, JSON, Yaml, Go)
  • Extend output dropdown modes
• Development improvements
  • Integrate automatic recompilation of main.wasm into the webpack watch pipeline
  • Ensure, via GitHub Action checks, that .go and .tsx files are formatted