[import/order] Potential regression in sibling and parent behavior

[erunion]

We have a bit of a complex import/order config and are seeing some new weird behavior with ordering on the sibling and parent groups on eslint-plugin-import@2.27.4:

'import/order': [
  'error',
  {
    alphabetize: {
      order: 'asc',
      caseInsensitive: true,
    },
    groups: ['type', 'builtin', 'external', 'internal', 'parent', 'sibling', 'index', 'object'],
    'newlines-between': 'always',
    pathGroups: [
      { pattern: '@Hub', group: 'external', position: 'after' },
      { pattern: '@Hub/**', group: 'external', position: 'after' },
      { pattern: '@Dash/**', group: 'external', position: 'after' },
      { pattern: '@core/**', group: 'external', position: 'after' },
      { pattern: '@routes/**', group: 'external', position: 'after' },
      { pattern: '@ui', group: 'external', position: 'after' },
      { pattern: '@ui/**', group: 'external', position: 'after' },
    ],
    pathGroupsExcludedImportTypes: ['@Hub', '@Dash', '@core', '@routes', '@ui'],
    warnOnUnassignedImports: true,
  },
],

Here's what our code looks like on eslint-plugin-import@2.26.0:

import React from 'react';

import Flex from '@ui/Flex';
import Menu, { MenuItem, MenuDivider } from '@ui/Menu';

import { isPolymorphic } from '../../utils';

import classes from './style.module.scss';
import './style.scss';

And it wants it to be now:

import React from 'react';

import Flex from '@ui/Flex';
import Menu, { MenuItem, MenuDivider } from '@ui/Menu';

import classes from './style.module.scss';
import './style.scss';

import { isPolymorphic } from '../../utils';

However if I swap the the order of parent and sibling in the config to this then the behavior we were seeing on v2.26.0 remains:

groups: ['type', 'builtin', 'external', 'internal', 'sibling', 'parent', 'index', 'object']

[ljharb]

I can confirm that this test case passes on v2.26.0 and fails on v2.27.4. It appears to have been broken by #2506. cc @Pearce-Ropion

[Pearce-Ropion]

I can have a look. My assumption is that my "patch" is causing ordering overlaps.

[ljharb]

Thanks! That sounds likely.

[cailloumajor]

I have the same problem: if I update to v2.27.4, I get import/order errors. If I call eslint with --fix, it reorder imports from below:

import { ref, watch } from "vue"

import DashboardMetric from "app/test/cypress/wrappers/DashboardMetricStub.vue"
import LineDashboardWrapper from "app/test/cypress/wrappers/LineDashboardWrapper.vue"
import QPage from "app/test/cypress/wrappers/QPageStub.vue"
import TimelineDisplay from "app/test/cypress/wrappers/TimelineDisplayStub.vue"
import fluxQueryComposable from "composables/flux-query"
import machineDataComposable from "composables/machine-data"
import { makeServer } from "src/dev-api-server"
import { LinkStatus, shiftDurationMillis, staticConfigApi } from "src/global"
import { lineDashboardConfigSchema } from "src/schemas"
import { useCampaignDataStore } from "stores/campaign-data"
import { useCommonLineInterfaceConfigStore } from "stores/common-line-interface-config"
import { useMachineDataLinkStatusStore } from "stores/machine-data-link"

import type { MachineData } from "../LineDashboard.vue"
import type { Server } from "miragejs"
import type { Ref } from "vue"

to below:

import { ref, watch } from "vue"

import DashboardMetric from "app/test/cypress/wrappers/DashboardMetricStub.vue"
import LineDashboardWrapper from "app/test/cypress/wrappers/LineDashboardWrapper.vue"
import QPage from "app/test/cypress/wrappers/QPageStub.vue"
import TimelineDisplay from "app/test/cypress/wrappers/TimelineDisplayStub.vue"
import fluxQueryComposable from "composables/flux-query"
import machineDataComposable from "composables/machine-data"
import { makeServer } from "src/dev-api-server"

import type { MachineData } from "../LineDashboard.vue"

import { LinkStatus, shiftDurationMillis, staticConfigApi } from "src/global"

import type { Server } from "miragejs"

import { lineDashboardConfigSchema } from "src/schemas"

import type { Ref } from "vue"

import { useCampaignDataStore } from "stores/campaign-data"
import { useCommonLineInterfaceConfigStore } from "stores/common-line-interface-config"
import { useMachineDataLinkStatusStore } from "stores/machine-data-link"

I tracked down the commit which introduced this behaviour with git bisect. It pointed me at 7a37f90 (introduced in #2506, as @ljharb stated).

Below is my configuration for import plugin:

const tsConfig = require("./tsconfig.json")
const internalPathPatterns = Object.keys(tsConfig.compilerOptions.paths)
  .filter((pat) => pat.endsWith("/*"))
  .map((pat) => pat.slice(0, -2))
  .join(",")
const internalPathGlob = `{${internalPathPatterns}}/**`

// ...snip

    "import/order": [
      "error",
      {
        "newlines-between": "always",
        alphabetize: { order: "asc" },
        groups: [
          "builtin",
          "external",
          "internal",
          "parent",
          "sibling",
          "index",
          "object",
          "type",
        ],
        pathGroups: [
          {
            pattern: internalPathGlob,
            group: "internal",
          },
        ],
        pathGroupsExcludedImportTypes: ["builtin", "type"],
      },
    ],

// ...snip

[Pearce-Ropion]

I just put up #2674 that should address this