Cannot run create-react-app with typescript

[starsolaris]

npx create-react-app example --typescript
cd ./example

create jetpack.config.js from doc

jetpack --verbose
jetpack › Jetpack 0.12.1 �
jetpack › Webpack 4.28.3
jetpack › Dir G:\source\example
jetpack › Entry .
jetpack › Asset server http://localhost:3030
jetpack › Failed to compile! Found 1 error:

  multi (webpack)-hot-middleware/client.js?path=/assets/__webpack_hmr&noInfo=true&reload=false .
  Module not found: Can't resolve '.' in 'G:\source\example'

[KidkArolis]

To use TypeScript with jetpack, you currently need a bit of extra config.

I had to do the following to get npx create-react-app example --typescript.

1. Create jetpack.config.js:

module.exports = {
  entry: "./src",
  webpack (config) {
    config.resolve.extensions = ['.tsx', '.ts', '.js', '.json']
    config.module.rules[0].oneOf.push({
      test: /\.tsx?$/,
      loader: 'ts-loader',
      exclude: /node_modules/,
    })
  }
}

2. Install ts-loader with npm i -D ts-loader
3. Install React types with with npm i -D @types/react
4. In tsconfig.json set "jsx": "react" and "noEmit": false

Not pretty, but I don't personally use TypeScript, so haven't spent the effort to make this nicer.

[KidkArolis]

I think CRA is not using ts-loader and that's why the tsconfig.json is a bit different there. If we did something more similar in jetpack to what CRA does with typescript, maybe in the general TS support would become simpler.

[starsolaris]

Thanks for helping me.
Another thing: when create app with create-react-app (with typescript, without all ok) browser print next warnings to console:

Ignored an update to unaccepted module ./src/App.js -> ./src/index.js -> 0
[HMR] The following modules couldn't be hot updated: (Full reload needed)
This is usually because the modules which have changed (and their parents) do not know how to hot reload themselves. See https://webpack.js.org/concepts/hot-module-replacement/ for more details.

When i made config changes from doc, HMR start working, but warning still appears.