Supports:
```js
// these all should produce "code;" when generated
template`code;`();
template`${0}`(t.identifier('code'));
template`${'code'}`({ code: t.identifier('code') });
template`${t.identifier('code')}`()
template({})`code`();
```
Supports:
```js
// these all should produce "code;" when generated
template`code;`();
template`${0}`(t.identifier('code'));
template`${'code'}`({ code: t.identifier('code') });
template`${t.identifier('code')}`()
template({})`code`();
```