Forbid imports from nested directories of flipper-common, flipper-plugin, flipper-ui-core

Summary:
Forbid imports from nested directories of flipper-common, flipper-plugin, flipper-ui-core

In the stack of D32926830 I occasionally imported from flipper-plugin/src/... which is not allowed. This should fix any auto-import related issues once and for all.

Reviewed By: timur-valiev

Differential Revision: D32987054

fbshipit-source-id: f19f6278219961ad283cacfec094a6c703ca93f8

desktop/.eslintrc.js

@@ -9,6 +9,9 @@
 
 const fbjs = require('eslint-config-fbjs');
 
+const rulesDirPlugin = require('eslint-plugin-rulesdir');
+rulesDirPlugin.RULES_DIR = 'eslint-rules';
+
 // enforces copy-right header and @format directive to be present in every file
 const pattern = /^\*\r?\n[\S\s]*Facebook[\S\s]* \* @format\r?\n/;
 
@@ -30,6 +33,39 @@ const builtInModules = [
 
 const prettierConfig = require('./.prettierrc.json');
 
+// We should forbid using "flipper" import. However, we have hundreds of plugins using it.
+// So we forbid it everywhere but in "plugins" directory.
+// To do that we need to keep "error" level of linting for most imports, but downlevel warning for "flipper" import to "warn".
+// It is not possible OOTB by eslint.
+// Instead, we create a clone of the "no-restricted-imports" rule and use it to split out restricted imports in two groups: warn and error.
+// https://github.com/eslint/eslint/issues/14061#issuecomment-772490154
+const restrictedImportsUniversalErrorConfig = {
+  paths: [
+    {
+      name: 'electron',
+      message:
+        "Direct imports from 'electron' are deprecated. Most functions can be found in getFlipperLib() from flipper-plugin package instead.",
+    },
+  ],
+  patterns: [
+    {
+      group: ['flipper-plugin/*'],
+      message:
+        "Imports from nested flipper-plugin directories are not allowed. Import from 'flipper-plugin' module directly. If it is missing an export, add it there with corresponding documentation (https://fbflipper.com/docs/extending/flipper-plugin/).",
+    },
+    {
+      group: ['flipper-common/*'],
+      message:
+        "Imports from nested flipper-common directories are not allowed. Import from 'flipper-common' module directly. If it is missing an export, add it there.",
+    },
+    {
+      group: ['flipper-ui-core/*'],
+      message:
+        "Imports from nested flipper-ui-core directories are not allowed. Import from 'flipper-ui-core' module directly. If it is missing an export, add it there.",
+    },
+  ],
+};
+
 module.exports = {
   parser: 'babel-eslint',
   root: true,
@@ -45,6 +81,7 @@ module.exports = {
     'flipper',
     'promise',
     'communist-spelling',
+    'rulesdir',
   ],
   rules: {
     // disable rules from eslint-config-fbjs
@@ -81,16 +118,17 @@ module.exports = {
       },
     ],
     'no-restricted-imports': [
-      1,
+      'error',
       {
-        name: 'flipper',
-        message:
-          "Direct imports from 'flipper' are deprecated. Import from 'flipper-plugin' instead, which can be tested and distributed stand-alone. See https://fbflipper.com/docs/extending/sandy-migration for more details.",
-      },
-      {
-        name: 'electron',
-        message:
-          "Direct imports from 'electron' are deprecated. Most functions can be found in getFlipperLib() from flipper-plugin package instead.",
+        ...restrictedImportsUniversalErrorConfig,
+        paths: [
+          ...restrictedImportsUniversalErrorConfig.paths,
+          {
+            name: 'flipper',
+            message:
+              "Direct imports from 'flipper' are deprecated. Import from 'flipper-plugin' instead, which can be tested and distributed stand-alone. See https://fbflipper.com/docs/extending/sandy-migration for more details.",
+          },
+        ],
       },
     ],
 
@@ -150,5 +188,26 @@ module.exports = {
         ],
       },
     },
+    {
+      files: ['plugins/**/*.ts', 'plugins/**/*.tsx'],
+      rules: {
+        'no-restricted-imports': [
+          'error',
+          restrictedImportsUniversalErrorConfig,
+        ],
+        'rulesdir/no-restricted-imports-clone': [
+          'warn',
+          {
+            paths: [
+              {
+                name: 'flipper',
+                message:
+                  "Direct imports from 'flipper' are deprecated. Import from 'flipper-plugin' instead, which can be tested and distributed stand-alone. See https://fbflipper.com/docs/extending/sandy-migration for more details.",
+              },
+            ],
+          },
+        ],
+      },
+    },
   ],
 };

desktop/eslint-rules/no-restricted-imports-clone.js

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+// https://github.com/eslint/eslint/issues/14061#issuecomment-772490154
+const eslint = require('eslint');
+module.exports = new eslint.Linter().getRules().get('no-restricted-imports');

desktop/flipper-server-core/src/devices/ios/__tests__/IOSBridge.node.tsx

@@ -14,6 +14,7 @@ jest.mock('promisify-child-process');
 import {makeIOSBridge} from '../IOSBridge';
 import * as promisifyChildProcess from 'promisify-child-process';
 import {setFlipperServerConfig} from '../../../FlipperServerConfig';
+// eslint-disable-next-line node/no-extraneous-import
 import {getRenderHostInstance} from 'flipper-ui-core';
 
 beforeEach(() => {

desktop/flipper-server-core/src/devices/ios/__tests__/iOSDevice.node.tsx

@@ -11,6 +11,7 @@ import {parseXcodeFromCoreSimPath} from '../iOSDeviceManager';
 import {getLogger} from 'flipper-common';
 import {IOSBridge} from '../IOSBridge';
 import {FlipperServerImpl} from '../../../FlipperServerImpl';
+// eslint-disable-next-line node/no-extraneous-import
 import {getRenderHostInstance} from 'flipper-ui-core';
 import {
   getFlipperServerConfig,

desktop/flipper-ui-core/src/.eslintrc.js

@@ -1,21 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- */
-
-module.exports = {
-  rules: {
-    'no-restricted-imports': [
-      'error',
-      {
-        // These paths lead to circular import issues in Flipper app and are forbidden
-        paths: ['flipper'],
-        patterns: ['flipper-ui-core/src/*'],
-      },
-    ],
-  },
-};

desktop/flipper-ui-core/src/RenderHost.tsx

@@ -9,6 +9,8 @@
 
 import type {NotificationEvents} from './dispatcher/notifications';
 import type {PluginNotification} from './reducers/notifications';
+// TODO: Fix me
+// eslint-disable-next-line no-restricted-imports
 import type {NotificationConstructorOptions} from 'electron';
 import {FlipperLib} from 'flipper-plugin';
 import {FlipperServer, FlipperServerConfig} from 'flipper-common';

desktop/package.json

@@ -149,6 +149,7 @@
     "eslint-plugin-promise": "^5.1.1",
     "eslint-plugin-react": "^7.27.1",
     "eslint-plugin-react-hooks": "^4.3.0",
+    "eslint-plugin-rulesdir": "^0.2.1",
     "expand-tilde": "^2.0.2",
     "express": "^4.15.2",
     "fb-watchman": "^2.0.1",

desktop/scripts/build-release.ts

@@ -35,6 +35,7 @@ import copyPackageWithDependencies from './copy-package-with-dependencies';
 import {staticDir, distDir} from './paths';
 import yargs from 'yargs';
 import {WinPackager} from 'app-builder-lib/out/winPackager';
+// eslint-disable-next-line no-restricted-imports
 import {Icon, getPublicIconUrl} from 'flipper-ui-core/src/utils/icons';
 
 // Used in some places to avoid release-to-release changes. Needs

desktop/scripts/jest-setup-after.ts

@@ -24,6 +24,7 @@ import {
 } from 'flipper-common';
 
 // Only import the type!
+// eslint-disable-next-line node/no-extraneous-import
 import type {RenderHost} from 'flipper-ui-core';
 
 const test = global.test;

desktop/yarn.lock

@@ -6203,6 +6203,11 @@ eslint-plugin-react@^7.27.1:
     semver "^6.3.0"
     string.prototype.matchall "^4.0.6"
 
+eslint-plugin-rulesdir@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-rulesdir/-/eslint-plugin-rulesdir-0.2.1.tgz#e246bb9657e68eb0a30680c60775f40aa829ec0b"
+  integrity sha512-t7rQvEyfE4JZJu6dPl4/uVr6Fr0fxopBhzVbtq3isfOHMKdlIe9xW/5CtIaWZI0E1U+wzAk0lEnZC8laCD5YLA==
+
 eslint-rule-composer@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/eslint-rule-composer/-/eslint-rule-composer-0.3.0.tgz#79320c927b0c5c0d3d3d2b76c8b4a488f25bbaf9"