# import/no-import-module-exports

> Disallow `import` declarations in a file that exports with `module.exports` or `exports.*`

In Node.js a file is either an ES module or a CommonJS module. A file with an `import` declaration is an ES module, where `module` and `exports` don't exist, so `module.exports = ...` throws a `ReferenceError`. Bundlers and transpilers that accept the mix don't agree on what a file like that exports.

The rule reports the import declarations. Any property of `module` counts, so `module.hot` in a file with imports is reported too.

A package's entry point is exempt. That's the file that `main` in the closest `package.json` points to, or its `index.js`.

{/* Generated by src/codegen/lint-rule-docs.ts. Do not edit this section. */}

## Configure

Off by default. To turn it on:

```toml bunfig.toml
[lint.rules]
"import/no-import-module-exports" = "error" # or "warn"
```

Every option, set to its default:

```toml bunfig.toml
[lint.rules]
"import/no-import-module-exports" = ["error", {
  exceptions = [],
}]
```

{/* End of the generated section. */}

## Examples

Reported:

{/* bad */}
```js
import { parse } from "./parse";

module.exports = { run: text => parse(text) };
```

{/* bad */}
```js
import { parse } from "./parse";

exports.run = text => parse(text);
```

{/* bad */}
```js
import { render } from "./render";

if (module.hot) {
  module.hot.accept(render);
}
```

Not reported:

{/* good */}
```js
import { parse } from "./parse";

export const run = text => parse(text);
```

{/* good */}
```js
const { parse } = require("./parse");

module.exports = { run: text => parse(text) };
```

The entry point:

{/* file "package.json" */}
```json package.json
{ "name": "runner", "main": "lib/runner.js" }
```

{/* good {"filename": "lib/runner.js"} */}
```js lib/runner.js
import { parse } from "./parse";

module.exports = { run: text => parse(text) };
```

## Options

| Option | Default | What it does |
| --- | --- | --- |
| `exceptions` | `[]` | Globs for files to skip. They're matched against the full path, so start them with `**/`. |

```toml bunfig.toml
[lint.rules]
"import/no-import-module-exports" = ["error", {
  exceptions = ["**/*.config.js"],
}]
```