---
source: crates/biome_formatter_test/src/snapshot_builder.rs
info: css/atrule/charset.css
---

# Input

```css
@charset "UTF-8";
@charset "iso-8859-15";
@charset 'iso-8859-15'; /* Invalid, wrong quoting style used */
@charset  "UTF-8"; /* Invalid, more than one space */
@charset "UTF-8"; /* Invalid, there is a character (a space) before the at-rule */
@charset UTF-8; /* Invalid, without ' or ", the charset is not a CSS <string> */

```


# Prettier differences

```diff
--- Prettier
+++ Biome
@@ -1,6 +1,6 @@
 @charset "UTF-8";
 @charset "iso-8859-15";
-@charset 'iso-8859-15'; /* Invalid, wrong quoting style used */
+@charset "iso-8859-15"; /* Invalid, wrong quoting style used */
 @charset "UTF-8"; /* Invalid, more than one space */
 @charset "UTF-8"; /* Invalid, there is a character (a space) before the at-rule */
 @charset UTF-8; /* Invalid, without ' or ", the charset is not a CSS <string> */
```

# Output

```css
@charset "UTF-8";
@charset "iso-8859-15";
@charset "iso-8859-15"; /* Invalid, wrong quoting style used */
@charset "UTF-8"; /* Invalid, more than one space */
@charset "UTF-8"; /* Invalid, there is a character (a space) before the at-rule */
@charset UTF-8; /* Invalid, without ' or ", the charset is not a CSS <string> */
```

# Errors
```
charset.css:6:10 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Expected a string but instead found 'UTF-8'.
  
    4 │ @charset  "UTF-8"; /* Invalid, more than one space */
    5 │ @charset "UTF-8"; /* Invalid, there is a character (a space) before the at-rule */
  > 6 │ @charset UTF-8; /* Invalid, without ' or ", the charset is not a CSS <string> */
      │          ^^^^^
    7 │ 
  
  i Expected a string here.
  
    4 │ @charset  "UTF-8"; /* Invalid, more than one space */
    5 │ @charset "UTF-8"; /* Invalid, there is a character (a space) before the at-rule */
  > 6 │ @charset UTF-8; /* Invalid, without ' or ", the charset is not a CSS <string> */
      │          ^^^^^
    7 │ 
  

```

# Lines exceeding max width of 80 characters
```
    5: @charset "UTF-8"; /* Invalid, there is a character (a space) before the at-rule */
```