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118 lines
2.3 KiB
Markdown
118 lines
2.3 KiB
Markdown
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# import/group-exports
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Reports when named exports are not grouped together in a single `export` declaration or when multiple assignments to CommonJS `module.exports` or `exports` object are present in a single file.
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**Rationale:** An `export` declaration or `module.exports` assignment can appear anywhere in the code. By requiring a single export declaration all your exports will remain at one place, making it easier to see what exports a module provides.
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## Rule Details
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This rule warns whenever a single file contains multiple named export declarations or multiple assignments to `module.exports` (or `exports`).
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### Valid
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```js
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// A single named export declaration -> ok
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export const valid = true
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```
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```js
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const first = true
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const second = true
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// A single named export declaration -> ok
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export {
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first,
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second,
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}
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```
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```js
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// Aggregating exports -> ok
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export { default as module1 } from 'module-1'
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export { default as module2 } from 'module-2'
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```
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```js
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// A single exports assignment -> ok
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module.exports = {
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first: true,
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second: true
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}
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```
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```js
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const first = true
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const second = true
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// A single exports assignment -> ok
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module.exports = {
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first,
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second,
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}
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```
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```js
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function test() {}
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test.property = true
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test.another = true
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// A single exports assignment -> ok
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module.exports = test
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```
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```flow js
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const first = true;
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type firstType = boolean
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// A single named export declaration (type exports handled separately) -> ok
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export {first}
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export type {firstType}
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```
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### Invalid
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```js
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// Multiple named export statements -> not ok!
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export const first = true
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export const second = true
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```
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```js
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// Aggregating exports from the same module -> not ok!
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export { module1 } from 'module-1'
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export { module2 } from 'module-1'
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```
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```js
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// Multiple exports assignments -> not ok!
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exports.first = true
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exports.second = true
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```
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```js
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// Multiple exports assignments -> not ok!
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module.exports = {}
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module.exports.first = true
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```
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```js
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// Multiple exports assignments -> not ok!
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module.exports = () => {}
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module.exports.first = true
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module.exports.second = true
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```
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```flow js
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type firstType = boolean
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type secondType = any
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// Multiple named type export statements -> not ok!
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export type {firstType}
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export type {secondType}
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```
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## When Not To Use It
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If you do not mind having your exports spread across the file, you can safely turn this rule off.
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