noUselessStringRaw

import { Tabs, TabItem } from '@astrojs/starlight/components';

<Tabs> <TabItem label="JavaScript (and super languages)" icon="seti:javascript"> ## Summary - Rule available since: `v1.9.4` - Diagnostic Category: [`lint/complexity/noUselessStringRaw`](/reference/diagnostics#diagnostic-category) - This rule is **recommended**, meaning it is enabled by default. - This rule doesn't have a fix. - The default severity of this rule is [**information**](/reference/diagnostics#information). ## How to configure ```json title="biome.json" { "linter": { "rules": { "complexity": { "noUselessStringRaw": "error" } } } }

## 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

```js
String.raw`a`;

<pre class="language-text"><code class="language-text">code-block.js:1:1 <a href="https://biomejs.dev/linter/rules/no-useless-string-raw">lint/complexity/noUselessStringRaw</a> ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ℹ String.raw is useless when the raw string doesn't contain any escape sequence. > 1 │ String.raw`a`; │ ^^^^^^^^^^^^^ 2 │ ℹ Remove the String.raw call because it's useless here, String.raw can deal with string which contains escape sequence like \n, \t, \r, \\, \", \'. </code></pre>

String.raw`a ${v}`;

<pre class="language-text"><code class="language-text">code-block.js:1:1 <a href="https://biomejs.dev/linter/rules/no-useless-string-raw">lint/complexity/noUselessStringRaw</a> ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ℹ String.raw is useless when the raw string doesn't contain any escape sequence. > 1 │ String.raw`a ${v}`; │ ^^^^^^^^^^^^^^^^^^ 2 │ ℹ Remove the String.raw call because it's useless here, String.raw can deal with string which contains escape sequence like \n, \t, \r, \\, \", \'. </code></pre>

Valid

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

String.raw`\n`;

</TabItem> </Tabs>

Valid

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