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# no-template-curly-in-string

[Added in v0.1.14](https://github.com/web-infra-dev/rslint/releases/tag/v0.1.14)
## Configuration


```ts title=rslint.config.ts
import { defineConfig, js } from '@rslint/core';

export default defineConfig([
  js.configs.recommended,
  {
    rules: {
      'no-template-curly-in-string': 'error',
    },
  },
]);
```

## Rule Details

Disallows template literal placeholder syntax (`${expression}`) inside regular strings. This is almost always a mistake where the developer intended to use a template literal (backtick-delimited string) but accidentally used single or double quotes instead, so the placeholder is treated as a literal string rather than being interpolated.

Examples of **incorrect** code for this rule:

```javascript
var greeting = 'Hello, ${name}!';

var query = 'SELECT * FROM ${table}';

var msg = 'The value is ${a + b}';
```

Examples of **correct** code for this rule:

```javascript
var greeting = `Hello, ${name}!`;

var query = `SELECT * FROM ${table}`;

var literal = 'This is a dollar sign: ${}'; // intentional
```

## Original Documentation

- [ESLint: no-template-curly-in-string](https://eslint.org/docs/latest/rules/no-template-curly-in-string)
- [Source code](https://github.com/eslint/eslint/blob/v10.8.1/lib/rules/no-template-curly-in-string.js)