noUselessStringRaw

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Diagnostic Category: lint/nursery/noUselessStringRaw

JavaScript (and super languages)

Since: v1.9.4

Description

Disallow unnecessary String.raw function in template string literals without any escape sequence.

String.raw is useless when contains a raw string without any escape-like sequence.

Examples

Invalid

String.raw`a`;

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

  ⚠ String.raw is useless when the raw string doesn’t contain any escape sequence.
  
  > 1 │ String.rawa;
      │ ^^^^^^^^^^^^^
    2 │ 
  
  ℹ Remove the String.raw call beacause it’s useless here, String.raw can deal with string which contains escape sequence like \n, \t, \r, \\, \”, \’.

String.raw`a ${v}`;

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

  ⚠ String.raw is useless when the raw string doesn’t contain any escape sequence.
  
  > 1 │ String.rawa $&#123;v&#125;;
      │ ^^^^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ Remove the String.raw call beacause it’s useless here, String.raw can deal with string which contains escape sequence like \n, \t, \r, \\, \”, \‘.

Valid

String.raw`\n ${a}`;

String.raw`\n`;

How to configure

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