---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalid.cjs
---
# Input
```cjs
"use strict";
"use strict";

function test() {
	"use strict";
	function inner_a() {
		"use strict"; // redundant directive
	}
	function inner_b() {
		function inner_inner() {
			"use strict"; // additional redundant directive
		}
	}
}

```

# Diagnostics
```
invalid.cjs:2:1 lint/suspicious/noRedundantUseStrict  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Redundant use strict directive.
  
    1 │ "use strict";
  > 2 │ "use strict";
      │ ^^^^^^^^^^^^^
    3 │ 
    4 │ function test() {
  
  i This outer use strict directive already enables strict mode.
  
  > 1 │ "use strict";
      │ ^^^^^^^^^^^^^
    2 │ "use strict";
    3 │ 
  
  i Safe fix: Remove the redundant use strict directive.
  
     1  1 │   "use strict";
     2    │ - "use·strict";
     3  2 │   
     4  3 │   function test() {
  

```

```
invalid.cjs:5:2 lint/suspicious/noRedundantUseStrict  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Redundant use strict directive.
  
    4 │ function test() {
  > 5 │ 	"use strict";
      │ 	^^^^^^^^^^^^^
    6 │ 	function inner_a() {
    7 │ 		"use strict"; // redundant directive
  
  i This outer use strict directive already enables strict mode.
  
  > 1 │ "use strict";
      │ ^^^^^^^^^^^^^
    2 │ "use strict";
    3 │ 
  
  i Safe fix: Remove the redundant use strict directive.
  
     3  3 │   
     4  4 │   function test() {
     5    │ - → "use·strict";
     6    │ - → function·inner_a()·{
        5 │ + → → function·inner_a()·{
     7  6 │   		"use strict"; // redundant directive
     8  7 │   	}
  

```

```
invalid.cjs:7:3 lint/suspicious/noRedundantUseStrict  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Redundant use strict directive.
  
    5 │ 	"use strict";
    6 │ 	function inner_a() {
  > 7 │ 		"use strict"; // redundant directive
      │ 		^^^^^^^^^^^^^
    8 │ 	}
    9 │ 	function inner_b() {
  
  i This outer use strict directive already enables strict mode.
  
  > 1 │ "use strict";
      │ ^^^^^^^^^^^^^
    2 │ "use strict";
    3 │ 
  
  i Safe fix: Remove the redundant use strict directive.
  
     5  5 │   	"use strict";
     6  6 │   	function inner_a() {
     7    │ - → → "use·strict";·//·redundant·directive
     8    │ - → }
        7 │ + → → → }
     9  8 │   	function inner_b() {
    10  9 │   		function inner_inner() {
  

```

```
invalid.cjs:11:4 lint/suspicious/noRedundantUseStrict  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! Redundant use strict directive.
  
     9 │ 	function inner_b() {
    10 │ 		function inner_inner() {
  > 11 │ 			"use strict"; // additional redundant directive
       │ 			^^^^^^^^^^^^^
    12 │ 		}
    13 │ 	}
  
  i This outer use strict directive already enables strict mode.
  
  > 1 │ "use strict";
      │ ^^^^^^^^^^^^^
    2 │ "use strict";
    3 │ 
  
  i Safe fix: Remove the redundant use strict directive.
  
     9  9 │   	function inner_b() {
    10 10 │   		function inner_inner() {
    11    │ - → → → "use·strict";·//·additional·redundant·directive
    12    │ - → → }
       11 │ + → → → → → }
    13 12 │   	}
    14 13 │   }
  

```