memo
```typescripttype JsonObject = { [ index: string ]: JsonValueTypes }type JsonValueTypes = JsonObject | Array<any> | number | string | true | false | null;type JsonType = JsonValueTypes;
const obj: JsonType = { "foo": { "bar": true }}```
あとで読むhttps://github.com/Microsoft/TypeScript/issues/1897
思考の /dev/null