---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalid.ts
---
# Input
```ts
function test(): void {
	"use strict";
}

```

# Diagnostics
```
invalid.ts:2:2 lint/suspicious/noRedundantUseStrict  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Redundant use strict directive.
  
    1 │ function test(): void {
  > 2 │ 	"use strict";
      │ 	^^^^^^^^^^^^^
    3 │ }
    4 │ 
  
  i The entire contents of JavaScript modules are automatically in strict mode, with no statement needed to initiate it.
  
  i Safe fix: Remove the redundant use strict directive.
  
    1 1 │   function test(): void {
    2   │ - → "use·strict";
    3   │ - }
      2 │ + → }
    4 3 │   
  

```