This fixes a problem where the `typescript` VSCode task runs `tsc` with `-p`
when it should run `-b` when `tsconfig.json` has the `"references"` property.

```js
{
  "extends": "./tsconfig.app.json",
  // meow
  "references": [{ "path": "./tsconfig.lib.json" }]
}
```

This bug happens because while `tsconfig.json` file allows comment, the
parsing logic here uses vanilla `JSON.parse` which cannot parse comments.

This commit fixes it by using `jsonc.parse` instead.