Rule proposal: sort export

[gajus]

I'd like to be able to sort exports in a file when file only contains exports, e.g.

// @flow

export type ScraperSourceType = {
  country: string,
  nid: string,
  name: string,
  url: string
};

export type ScraperFeaturesType = {
  hasTimeAttributes: Array<Object>,
  hasTimeUrls: boolean
};

export type ScraperType = {
  source: ScraperSourceType,
  features: ScraperFeaturesType,
  scrapeVenues: Function,
  scrapeMovies: Function,
  scrapeShowtimes: Function
};

This file only contains exports. I'd like the latter to become into:

// @flow

export type ScraperFeaturesType = {
  hasTimeAttributes: Array<Object>,
  hasTimeUrls: boolean
};

export type ScraperSourceType = {
  country: string,
  nid: string,
  name: string,
  url: string
};

export type ScraperType = {
  source: ScraperSourceType,
  features: ScraperFeaturesType,
  scrapeVenues: Function,
  scrapeMovies: Function,
  scrapeShowtimes: Function
};

[gajus]

To make this fixable, I can see how this causes a number of complications, e.g. what to do with potential commits surrounding an export statement.

However, reporting alone would be nice.

[carlost]

piling onto this ... it would be useful for me if we could force the default export to follow any named exports. currently we have be manually enforce that convention ... which means it isn't followed very well.

[saltman424]

Agreed.

In our case, we want to do this particularly for alphabetizing exports in index files, which for us often look like this:

export * from './file1'
export * from './file2'
export * from './file3'
export * from './file4'

[saltman424]

For those with the same use case as me, I found this: https://www.npmjs.com/package/eslint-plugin-sort-exports

[nirtamir2]

Agreed.

In our case, we want to do this particularly for alphabetizing exports in index files, which for us often look like this:

export * from './file1'
export * from './file2'
export * from './file3'
export * from './file4'

@saltman424 I created an ESLint plugin especially for that.
It targets export * cases and also auto-fix them.
See https://github.com/nirtamir2/eslint-plugin-sort-export-all
We can merge it to be part of the eslint-plugin-import if it's acceptable by this repository maintainers.