Add new rule no-implicit-injections (#1714)

Co-authored-by: Bryan Mishkin <698306+bmish@users.noreply.github.com>
Fixes #1178

README.md

@@ -102,6 +102,7 @@ module.exports = {
 | [new-module-imports](docs/rules/new-module-imports.md)                             | enforce using "New Module Imports" from Ember RFC #176    | ✅  |    |    |
 | [no-array-prototype-extensions](docs/rules/no-array-prototype-extensions.md)       | disallow usage of Ember's `Array` prototype extensions    |    | 🔧 |    |
 | [no-function-prototype-extensions](docs/rules/no-function-prototype-extensions.md) | disallow usage of Ember's `function` prototype extensions | ✅  |    |    |
+| [no-implicit-injections](docs/rules/no-implicit-injections.md)                     | enforce usage of implicit service injections              |    | 🔧 |    |
 | [no-mixins](docs/rules/no-mixins.md)                                               | disallow the usage of mixins                              | ✅  |    |    |
 | [no-new-mixins](docs/rules/no-new-mixins.md)                                       | disallow the creation of new mixins                       | ✅  |    |    |
 | [no-observers](docs/rules/no-observers.md)                                         | disallow usage of observers                               | ✅  |    |    |

docs/rules/no-implicit-injections.md

@@ -0,0 +1,116 @@
+# ember/no-implicit-injections
+
+🔧 This rule is automatically fixable by the [`--fix` CLI option](https://eslint.org/docs/latest/user-guide/command-line-interface#--fix).
+
+<!-- end auto-generated rule header -->
+
+Ember 3.26 introduced a deprecation for relying on implicit service injections or allowing addons to implicitly inject services into all classes of certain types. Support for this is dropped in Ember 4.0.
+
+In many applications, `this.store` from Ember Data is often used without injecting the `store` service in Controllers or Routes. Other addons may also have included implicit service injections via initializers and the `application.inject` API.
+
+To resolve this deprecation, a service should be explicitly declared and injected using the [service injection decorator](https://api.emberjs.com/ember/3.28/functions/@ember%2Fservice/inject).
+
+## Rule Details
+
+This rule checks for a configured list of previously auto injected services and warns if they are used in classes without explicit injected service properties.
+
+## Examples
+
+Examples of **incorrect** code for this rule:
+
+```js
+// routes/index.js
+import Route from '@ember/routing/route';
+
+export default class IndexRoute extends Route {
+  model() {
+    return this.store.findAll('rental');
+  }
+}
+
+```
+
+```js
+// controllers/index.js
+import Controller from '@ember/controller';
+import { action } from '@ember/object';
+
+export default class IndexController extends Controller {
+  @action
+  loadUsers() {
+    return this.store.findAll('user');
+  }
+}
+```
+
+Examples of **correct** code for this rule:
+
+```js
+// routes/index.js
+import Route from '@ember/routing/route';
+import { inject as service } from '@ember/service';
+
+export default class IndexRoute extends Route {
+  @service('store') store;
+
+  model() {
+    return this.store.findAll('rental');
+  }
+}
+```
+
+```js
+// controller/index.js
+import Route from '@ember/routing/route';
+import { action } from '@ember/object';
+import { inject as service } from '@ember/service';
+
+export default class IndexController extends Controller {
+  @service('store') store;
+
+  @action
+  loadUsers() {
+    return this.store.findAll('user');
+  }
+}
+```
+
+## Migration
+
+The autofixer for this rule will update classes and add injections for the configured services.
+
+## Configuration
+
+This lint rule will search for instances of `store` used in routes or controllers by default. If you have other services that you would like to check for uses of, the configuration can be overridden.
+
+- object -- containing the following properties:
+  - array -- `denyList` -- Array of configuration objects configuring the lint rule to check for use of implicit injected services
+    - string -- `service` -- The (kebab-case) service name that should be checked for implicit injections and error if found
+    - array -- `propertyName` -- The property name where the service would be injected in classes. This defaults to the camel case version of the `service` config above.
+    - array -- `moduleNames` -- Array of string listing the types of classes (`Controller`, `Route`, `Component`, etc) to check for implicit injections. If an array is declared, only those class types will be checked for implicit injection. (Defaults to checking all Ember Module class files/types)
+
+Example config:
+
+```js
+module.exports = {
+  rules: {
+    'ember/no-implicit-injections': ['error', {
+      denyList: [
+        // Ember Responsive Used to Auto Inject the media service in Components/Controllers
+        { service: 'media', moduleNames: ['Component', 'Controller'] },
+        // Ember CLI Flash Used to Auto Inject the flashMessages service in all modules
+        { service: 'flash-messages' },
+        // Check for uses of the store in Routes or Controllers
+        { service: 'store', moduleNames: ['Route', 'Controller'] },
+        // Check for the feature service injected as "featureChecker"
+        { service: 'feature', propertyName: 'featureChecker' },
+      ]
+    }]
+  }
+}
+```
+
+## References
+
+- [Deprecation](https://deprecations.emberjs.com/v3.x/#toc_implicit-injections)
+- [Ember Data Store Service](https://api.emberjs.com/ember-data/release/classes/Store)

lib/rules/no-implicit-injections.js

@@ -0,0 +1,242 @@
+'use strict';
+
+const assert = require('assert');
+const emberUtils = require('../utils/ember');
+const { getImportIdentifier } = require('../utils/import');
+const Stack = require('../utils/stack');
+const types = require('../utils/types');
+const camelCase = require('lodash.camelcase');
+
+const defaultServiceConfig = { service: 'store', moduleNames: ['Route', 'Controller'] };
+const MODULE_TYPES = [
+  'Component',
+  'GlimmerComponent',
+  'Controller',
+  'Mixin',
+  'Route',
+  'Service',
+  'ArrayProxy',
+  'ObjectProxy',
+  'EmberObject',
+  'Helper',
+];
+
+// ----- -------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+function fixService(fixer, currentClass, serviceInjectImportName, failedConfig) {
+  const serviceInjectPath = failedConfig.service;
+
+  return currentClass.node.type === 'CallExpression'
+    ? fixer.insertTextBefore(
+        currentClass.node.arguments[0].properties[0],
+        `${failedConfig.propertyName}: ${serviceInjectImportName}('${serviceInjectPath}'),\n`
+      )
+    : fixer.insertTextBefore(
+        currentClass.node.body.body[0],
+        `@${serviceInjectImportName}('${serviceInjectPath}') ${failedConfig.propertyName};\n`
+      );
+}
+
+function normalizeConfiguration(denyList) {
+  return denyList.map((config) => ({
+    service: config.service,
+    propertyName: config.propertyName ?? camelCase(config.service),
+    moduleNames: config.moduleNames ?? MODULE_TYPES,
+  }));
+}
+
+/** @type {import('eslint').Rule.RuleModule} */
+module.exports = {
+  meta: {
+    type: 'suggestion',
+    docs: {
+      description: 'enforce usage of implicit service injections',
+      category: 'Deprecations',
+      recommended: false,
+      url: 'https://github.com/ember-cli/eslint-plugin-ember/tree/master/docs/rules/no-implicit-injections.md',
+    },
+    fixable: 'code',
+    schema: [
+      {
+        type: 'object',
+        required: ['denyList'],
+        properties: {
+          denyList: {
+            minItems: 1,
+            type: 'array',
+            items: {
+              type: 'object',
+              default: [defaultServiceConfig],
+              required: ['service'],
+              properties: {
+                service: {
+                  type: 'string',
+                  minLength: 1,
+                },
+                propertyName: {
+                  type: 'string',
+                  minLength: 1,
+                },
+                moduleNames: {
+                  type: 'array',
+                  items: {
+                    enum: MODULE_TYPES,
+                  },
+                },
+              },
+              additionalProperties: false,
+            },
+          },
+        },
+        additionalProperties: false,
+      },
+    ],
+    messages: {
+      main: 'Do not rely on implicit service injections for the "{{serviceName}}" service. Implicit service injections were deprecated in Ember 3.26 and will not work in 4.0.',
+    },
+  },
+
+  create(context) {
+    const options = context.options[0] || {
+      denyList: [defaultServiceConfig],
+    };
+    const denyList = options.denyList || [defaultServiceConfig];
+
+    for (const config of denyList) {
+      assert(
+        emberUtils.convertServiceNameToKebabCase(config.service) === config.service,
+        'Service name should be passed in kebab-case (all lower case)'
+      );
+
+      assert(
+        !config.service.includes('/') || config.propertyName,
+        'Nested services must declare a property name'
+      );
+    }
+
+    // State being tracked for this file.
+    let serviceInjectImportName = undefined;
+    const normalizedConfiguration = normalizeConfiguration(denyList);
+
+    // State being tracked for the current class we're inside.
+    const classStack = new Stack();
+
+    // Array of posible types that could declare existing properties on native or legacy modules
+    const propertyDefintionTypes = new Set([
+      'Property',
+      'ClassProperty',
+      'PropertyDefinition',
+      'MethodDefinition',
+    ]);
+
+    function onModuleFound(node) {
+      // Get the name of services for the current module type
+      let configToCheckFor = normalizedConfiguration.filter((serviceConfig) => {
+        return (
+          serviceConfig.moduleNames === undefined ||
+          serviceConfig.moduleNames.some((moduleName) =>
+            emberUtils.isEmberCoreModule(context, node, moduleName)
+          )
+        );
+      });
+
+      const modulePropertyDeclarations =
+        node.type === 'CallExpression' ? node.arguments[0].properties : node.body.body;
+
+      // Get Services that don't have properties/service injections declared
+      configToCheckFor = modulePropertyDeclarations.reduce((accum, n) => {
+        if (propertyDefintionTypes.has(n.type)) {
+          return accum.filter((config) => !(config.propertyName === n.key.name));
+        }
+        return accum;
+      }, configToCheckFor);
+
+      classStack.push({
+        node,
+        isEmberModule: true,
+        configToCheckFor,
+      });
+    }
+
+    function onClassEnter(node) {
+      if (emberUtils.isAnyEmberCoreModule(context, node)) {
+        onModuleFound(node);
+      } else {
+        classStack.push({
+          node,
+          isEmberModule: false,
+        });
+      }
+    }
+
+    function onClassExit(node) {
+      // Leaving current (native) class.
+      if (classStack.size() > 0 && classStack.peek().node === node) {
+        classStack.pop();
+      }
+    }
+
+    return {
+      ImportDeclaration(node) {
+        if (node.source.value === '@ember/service') {
+          serviceInjectImportName =
+            serviceInjectImportName || getImportIdentifier(node, '@ember/service', 'inject');
+        }
+      },
+
+      ClassDeclaration: onClassEnter,
+      ClassExpression: onClassEnter,
+      CallExpression(node) {
+        if (emberUtils.isAnyEmberCoreModule(context, node)) {
+          onModuleFound(node);
+        }
+      },
+
+      'ClassDeclaration:exit': onClassExit,
+      'ClassExpression:exit': onClassExit,
+      'CallExpression:exit': onClassExit,
+
+      MemberExpression(node) {
+        const currentClass = classStack.peek();
+
+        if (!currentClass || !currentClass.isEmberModule) {
+          return;
+        }
+
+        if (types.isThisExpression(node.object) && types.isIdentifier(node.property)) {
+          const failedConfig = currentClass.configToCheckFor.find(
+            (s) => s.propertyName === node.property.name
+          );
+
+          if (failedConfig) {
+            context.report({
+              node,
+              messageId: 'main',
+              data: {
+                serviceName: failedConfig.service,
+              },
+              fix(fixer) {
+                const sourceCode = context.getSourceCode();
+
+                // service inject is already declared
+                if (serviceInjectImportName) {
+                  return fixService(fixer, currentClass, serviceInjectImportName, failedConfig);
+                }
+
+                return [
+                  fixer.insertTextBefore(
+                    sourceCode.ast,
+                    "import { inject as service } from '@ember/service';\n"
+                  ),
+                  fixService(fixer, currentClass, 'service', failedConfig),
+                ];
+              },
+            });
+          }
+        }
+      },
+    };
+  },
+};

lib/utils/ember.js

@@ -222,7 +222,7 @@ function isEmberCoreModule(context, node, moduleName) {
   if (types.isCallExpression(node)) {
     // "classic" class pattern
     return isClassicEmberCoreModule(node, moduleName, context.getFilename());
-  } else if (types.isClassDeclaration(node)) {
+  } else if (types.isClassDeclaration(node) || node.type === 'ClassExpression') {
     // native classes
     if (
       // class Foo extends Component
@@ -251,7 +251,7 @@ function isEmberCoreModule(context, node, moduleName) {
   } else {
     assert(
       false,
-      'Function should only be called on a `CallExpression` (classic class) or `ClassDeclaration` (native class)'
+      'Function should only be called on a `CallExpression` (classic class) or `ClassDeclaration`/`ClassExpression` (native class)'
     );
   }
   return false;

package.json

@@ -71,6 +71,7 @@
     "ember-template-imports": "^3.1.1",
     "eslint-utils": "^3.0.0",
     "estraverse": "^5.2.0",
+    "lodash.camelcase": "^4.1.1",
     "lodash.kebabcase": "^4.1.1",
     "magic-string": "^0.27.0",
     "requireindex": "^1.2.0",