noEmptySource

GraphQL

Note

This rule has been implemented but not released yet. It will be available in the next release.

Caution

This rule is part of the nursery group. This means that it is experimental and the behavior can change at any time.

Summary

• Diagnostic Category: lint/nursery/noEmptySource
• This rule doesn’t have a fix.
• The default severity of this rule is information.

How to configure

biome.json

{
  "linter": {
    "rules": {
      "nursery": {
        "noEmptySource": "error"
      }
    }
  }
}

Description

Disallow empty sources.

A source containing only the following is considered empty:

• Whitespace (spaces, tabs or newlines)
• Comments

Examples

Invalid

code-block.graphql:2:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
  > 2 │ 
      │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

code-block.graphql:1:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Expected a definition but instead found ‘Only comments’.
  
  > 1 │ Only comments
      │ ^^^^^^^^^^^^^
    2 │ 
  
  ℹ Expected a definition here.
  
  > 1 │ Only comments
      │ ^^^^^^^^^^^^^
    2 │ 
  

Valid

query Member {}

fragment StrippedMember on Member {}

Options

allowComments

Whether the comments should be marked as meaningful. When this option has been set to true, a file with only comments is considered valid.

Default false

biome.json

{
  "linter": {
    "rules": {
      "nursery": {
        "noEmptySource": {
          "options": {
            "allowComments": true
          }
        }
      }
    }
  }
}

Invalid

code-block.graphql:2:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
  > 2 │ 
      │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

Valid

code-block.graphql:1:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Expected a definition but instead found ‘Only comments’.
  
  > 1 │ Only comments
      │ ^^^^^^^^^^^^^
    2 │ 
  
  ℹ Expected a definition here.
  
  > 1 │ Only comments
      │ ^^^^^^^^^^^^^
    2 │ 
  

Related links

• Disable a rule
• Configure the code fix
• Rule options
• Source Code
• Test Cases

JSON (and super languages)

Note

This rule has been implemented but not released yet. It will be available in the next release.

Caution

This rule is part of the nursery group. This means that it is experimental and the behavior can change at any time.

Summary

• Diagnostic Category: lint/nursery/noEmptySource
• This rule doesn’t have a fix.
• The default severity of this rule is information.

How to configure

biome.json

{
  "linter": {
    "rules": {
      "nursery": {
        "noEmptySource": "error"
      }
    }
  }
}

Description

Disallow empty sources.

A source containing only the following is considered empty:

• Whitespace (spaces, tabs or newlines)
• Comments

Examples

Invalid

code-block.json:2:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Expected an array, an object, or a literal but instead found the end of the file.
  
  > 2 │ 
      │ 
  
  ℹ Expected an array, an object, or a literal here.
  
  > 2 │ 
      │ 
  

// Only comments

code-block.jsonc:2:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Expected an array, an object, or a literal but instead found the end of the file.
  
    1 │ // Only comments
  > 2 │ 
      │ 
  
  ℹ Expected an array, an object, or a literal here.
  
    1 │ // Only comments
  > 2 │ 
      │ 
  

Valid

{ }

Options

allowComments

Whether the comments should be marked as meaningful. When this option has been set to true, a file with only comments is considered valid.

Default false

biome.json

{
  "linter": {
    "rules": {
      "nursery": {
        "noEmptySource": {
          "options": {
            "allowComments": true
          }
        }
      }
    }
  }
}

Invalid

code-block.jsonc:2:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Expected an array, an object, or a literal but instead found the end of the file.
  
  > 2 │ 
      │ 
  
  ℹ Expected an array, an object, or a literal here.
  
  > 2 │ 
      │ 
  

Valid

// Only comments

code-block.jsonc:2:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Expected an array, an object, or a literal but instead found the end of the file.
  
    1 │ // Only comments
  > 2 │ 
      │ 
  
  ℹ Expected an array, an object, or a literal here.
  
    1 │ // Only comments
  > 2 │ 
      │ 
  

Related links

• Disable a rule
• Configure the code fix
• Rule options
• Source Code
• Test Cases

CSS

Note

This rule has been implemented but not released yet. It will be available in the next release.

Caution

This rule is part of the nursery group. This means that it is experimental and the behavior can change at any time.

Summary

• Diagnostic Category: lint/nursery/noEmptySource
• This rule doesn’t have a fix.
• The default severity of this rule is information.
• Sources:
  • Same as stylelint/no-empty-source

How to configure

biome.json

{
  "linter": {
    "rules": {
      "nursery": {
        "noEmptySource": "error"
      }
    }
  }
}

Description

Disallow empty sources.

A source containing only the following is considered empty:

• Whitespace (spaces, tabs or newlines)
• Comments

Examples

Invalid

code-block.css:2:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
  > 2 │ 
      │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

/* Only comments */

code-block.css:2:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
    1 │ /* Only comments */
  > 2 │ 
      │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

Valid

a { }

Options

allowComments

Whether the comments should be marked as meaningful. When this option has been set to true, a file with only comments is considered valid.

Default false

biome.json

{
  "linter": {
    "rules": {
      "nursery": {
        "noEmptySource": {
          "options": {
            "allowComments": true
          }
        }
      }
    }
  }
}

Invalid

code-block.css:2:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
  > 2 │ 
      │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

Valid

/* Only comments */

Related links

• Disable a rule
• Configure the code fix
• Rule options
• Source Code
• Test Cases

JavaScript (and super languages)

Note

This rule has been implemented but not released yet. It will be available in the next release.

Caution

This rule is part of the nursery group. This means that it is experimental and the behavior can change at any time.

Summary

• Diagnostic Category: lint/nursery/noEmptySource
• This rule doesn’t have a fix.
• The default severity of this rule is information.
• Sources:
  • Same as unicorn/no-empty-file

How to configure

biome.json

{
  "linter": {
    "rules": {
      "nursery": {
        "noEmptySource": "error"
      }
    }
  }
}

Description

Disallow empty sources.

A source containing only the following is considered empty:

• Whitespace (spaces, tabs or newlines)
• Comments
• Directives
• Empty statements
• Empty block statements
• Hashbang

Examples

Invalid

code-block.js:2:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
  > 2 │ 
      │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

// Only comments

code-block.js:2:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
    1 │ // Only comments
  > 2 │ 
      │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

/* Only comments */

code-block.js:2:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
    1 │ /* Only comments */
  > 2 │ 
      │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

'use strict';

code-block.js:1:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
  > 1 │ ‘use strict’;
      │ ^^^^^^^^^^^^^
    2 │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

;

code-block.js:1:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
  > 1 │ ;
      │ ^
    2 │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

{
}

code-block.js:1:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
  > 1 │ {
      │ ^
  > 2 │ }
      │ ^
    3 │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

#!/usr/bin/env node

code-block.js:1:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
  > 1 │ #!/usr/bin/env node
      │ ^^^^^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

Valid

const x = 0;

'use strict';
const x = 0;

;;
const x = 0;

{
  const x = 0;
}

Options

allowComments

Whether the comments should be marked as meaningful. When this option has been set to true, a file with only comments is considered valid.

Default false

biome.json

{
  "linter": {
    "rules": {
      "nursery": {
        "noEmptySource": {
          "options": {
            "allowComments": true
          }
        }
      }
    }
  }
}

Invalid

code-block.js:2:1 lint/nursery/noEmptySource ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ An empty source is not allowed.
  
  > 2 │ 
      │ 
  
  ℹ Empty sources can clutter the codebase and increase cognitive load; deleting empty sources can help reduce it.
  

Valid

/* Only comments */

Related links

• Disable a rule
• Configure the code fix
• Rule options
• Source Code
• Test Cases