---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalidModule.js
---
# Input
```jsx
var x = 1;
export const y = x;
```

# Diagnostics
```
invalidModule.js:1:1 lint/style/noVar  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Use let or const instead of var.
  
  > 1 │ var x = 1;
      │ ^^^^^^^^^
    2 │ export const y = x;
  
  i A variable declared with var is accessible in the whole module. Thus, the variable can be accessed before its initialization and outside the block where it is declared.
  
  i See MDN web docs for more details.
  
  i Unsafe fix: Use 'const' instead.
  
    1   │ - var·x·=·1;
      1 │ + const·x·=·1;
    2 2 │   export const y = x;
  

```