noUnusedTemplateLiteral (JavaScript)

Language JavaScript (and super languages)

Summary

• Rule available since: v1.0.0
• Diagnostic Category: lint/style/noUnusedTemplateLiteral
• This rule isn’t recommended, so you need to enable it.
• This rule has a safe fix.
• The default severity of this rule is warning.

How to configure

biome.json

{
  "linter": {
    "rules": {
      "style": {
        "noUnusedTemplateLiteral": "error"
      }
    }
  }
}

Description

Disallow template literals if interpolation and special-character handling are not needed

Examples

Invalid

const foo = `bar`

code-block.js:1:13 lint/style/noUnusedTemplateLiteral  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ⚠ Do not use template literals if interpolation and special-character handling are not needed.
  
  > 1 │ const foo = `bar`
      │             ^^^^^
    2 │ 
  
  ℹ Safe fix: Replace with string literal
  
    1   │ - const·foo·=·`bar`
      1 │ + const·foo·=·"bar"
    2 2 │   
  

const foo = `bar `

code-block.js:1:13 lint/style/noUnusedTemplateLiteral  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ⚠ Do not use template literals if interpolation and special-character handling are not needed.
  
  > 1 │ const foo = `bar `
      │             ^^^^^^
    2 │ 
  
  ℹ Safe fix: Replace with string literal
  
    1   │ - const·foo·=·`bar·`
      1 │ + const·foo·=·"bar·"
    2 2 │   
  

Valid

const foo = `bar
has newline`;

const foo = `"bar"`

const foo = `'bar'`

Related links

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