Expect json file comilped to es6 module.

[underfin]

Feature Request

Expect json file support comilped to es6 module.

Current behavior

The json file will compiled to common js module even passed target: 2020 options

{
  "hello": "this is json"
}

module.exports = {
  hello: "this is json"
};

Other Feature

It is great if it can support named export.

[evanw]

It will be compiled into an ES6 module if imported using an ES6 import. Can you say more about your use case? How are you compiling this? Through the API? Through the command line? With what options?

[underfin]

Sorry for not provider more info at first.
I want to compile json to es6 modules not inside an es6 import. The use case is here https://github.com/vitejs/vite/blob/master/src/node/server/serverPluginJson.ts#L11 and use (await startService()).transform api to do this.The options is {loader: 'json',target: 'es2020'}

[evanw]

It looks like this is a duplicate of #109. This would be possible if you could pass the format option when transforming.