---
source: crates/rolldown_testing/src/integration_test.rs
---
# Assets
## main.js
```js
//#region main.js
var firstLevelLet = "let";
var firstLevelVar = "var";
var firstLevelConst = "const";
var FirstLevelClass = class {};
console.log(firstLevelLet, firstLevelVar, firstLevelConst, new FirstLevelClass());
console.log("let");
function second_level() {
let secondLevelLet = "let";
var secondLevelVar = "var";
const secondLevelConst = "const";
class SecondLevelClass {}
console.log(secondLevelLet, secondLevelVar, secondLevelConst, new SecondLevelClass());
}
second_level();
//#endregion
```