61 lines
1.8 KiB
Plaintext
61 lines
1.8 KiB
Plaintext
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---
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description: 'Disallow `require` statements except in import statements.'
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---
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> 🛑 This file is source code, not the primary documentation location! 🛑
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>
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> See **https://typescript-eslint.io/rules/no-var-requires** for documentation.
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In other words, the use of forms such as `var foo = require("foo")` are banned. Instead use ES6 style imports or `import foo = require("foo")` imports.
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## Examples
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<!--tabs-->
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### ❌ Incorrect
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```ts
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var foo = require('foo');
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const foo = require('foo');
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let foo = require('foo');
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```
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### ✅ Correct
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```ts
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import foo = require('foo');
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require('foo');
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import foo from 'foo';
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```
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## Options
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### `allow`
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A array of strings. These strings will be compiled into regular expressions with the `u` flag and be used to test against the imported path. A common use case is to allow importing `package.json`. This is because `package.json` commonly lives outside of the TS root directory, so statically importing it would lead to root directory conflicts, especially with `resolveJsonModule` enabled. You can also use it to allow importing any JSON if your environment doesn't support JSON modules, or use it for other cases where `import` statements cannot work.
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With `{allow: ['/package\\.json$']}`:
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<!--tabs-->
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### ❌ Incorrect
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```ts
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const foo = require('../data.json');
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```
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### ✅ Correct
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```ts
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const foo = require('../package.json');
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```
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## When Not To Use It
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If your project frequently uses older CommonJS `require`s, then this rule might not be applicable to you.
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If only a subset of your project uses `require`s then you might consider using [ESLint disable comments](https://eslint.org/docs/latest/use/configure/rules#using-configuration-comments-1) for those specific situations instead of completely disabling this rule.
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## Related To
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- [`no-require-imports`](./no-require-imports.md)
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