Require sorting imports by length

eslint-rule-sort-imports-by-length.js

export default function(context) {
  const fileSource = context.eslint.sourceCode.text
  return {
    ImportDeclaration(node) {
      const idx = node.parent.body.indexOf(node)
      const line = node.loc.start.line
      
      if (idx > 0) {
        const prevNode = node.parent.body[idx - 1]
        if (line - prevNode.loc.end.line < 2) {
          if (prevNode.loc.end.column < node.loc.end.column) {
            context.report(node, 'Imports should be sorted by length, with the longest first')
          }
        }
      }
    }
  };
};

test.js

// ok:
import chalk from 'chalk'

import { foo } from './bar'
import {
  baz as quux
} from './utils'

// error:
import {
  baz as quux
} from './utils'
import { foo } from './bar'