Fix CI lint failures and remove rule from recommended configs

- Remove `require('ts-api-utils')` and `require('typescript')` (not declared deps); inline TS_ALIAS_FLAG constant and displayPartsToString logic
- Remove `recommendedGts: true` and `requiresTypeChecking` from meta (breaking change, per review; fixes meta-property-ordering lint error)
- Fix `eqeqeq`: use `!== undefined` instead of `!= null`
- Fix `no-param-reassign`: use `current` variable instead of reassigning `symbol` param
- Add `output: null` to invalid test cases (consistent-output lint rule)
- Regenerate config files and docs (rule no longer in recommended configs)

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

Author: wagenet

README.md

@@ -291,7 +291,7 @@ rules in templates can be disabled with eslint directives with mustache or html
 | [no-empty-glimmer-component-classes](docs/rules/no-empty-glimmer-component-classes.md)     | disallow empty backing classes for Glimmer components                                                          | ✅                                                               |    |    |
 | [no-tracked-properties-from-args](docs/rules/no-tracked-properties-from-args.md)           | disallow creating @tracked properties from this.args                                                           | ✅                                                               |    |    |
 | [template-indent](docs/rules/template-indent.md)                                           | enforce consistent indentation for gts/gjs templates                                                           |                                                                 | 🔧 |    |
-| [template-no-deprecated](docs/rules/template-no-deprecated.md)                             | disallow using deprecated Glimmer components, helpers, and modifiers in templates                              | ![gts logo](/docs/svgs/gts.svg)                                 |    |    |
+| [template-no-deprecated](docs/rules/template-no-deprecated.md)                             | disallow using deprecated Glimmer components, helpers, and modifiers in templates                              |                                                                 |    |    |
 | [template-no-let-reference](docs/rules/template-no-let-reference.md)                       | disallow referencing let variables in \<template\>                                                             | ![gjs logo](/docs/svgs/gjs.svg) ![gts logo](/docs/svgs/gts.svg) |    |    |
 
 ### jQuery

docs/rules/template-no-deprecated.md

@@ -1,7 +1,5 @@
 # ember/template-no-deprecated
 
-💼 This rule is enabled in the ![gts logo](/docs/svgs/gts.svg) `recommended-gts` [config](https://github.com/ember-cli/eslint-plugin-ember#-configurations).
-
 <!-- end auto-generated rule header -->
 
 Disallows using Glimmer components, helpers, or modifiers that are marked `@deprecated` in their JSDoc.
@@ -14,12 +12,12 @@ The rule resolves template references through ESLint's scope analysis: a `<Compo
 
 **Covered syntax:**
 
-| Template syntax | Example |
-|---|---|
-| Component element | `<DeprecatedComponent />` |
-| Helper / value mustache | `{{deprecatedHelper}}` |
-| Block component | `{{#DeprecatedBlock}}…{{/DeprecatedBlock}}` |
-| Modifier | `<div {{deprecatedModifier}}>` |
+| Template syntax         | Example                                     |
+| ----------------------- | ------------------------------------------- |
+| Component element       | `<DeprecatedComponent />`                   |
+| Helper / value mustache | `{{deprecatedHelper}}`                      |
+| Block component         | `{{#DeprecatedBlock}}…{{/DeprecatedBlock}}` |
+| Modifier                | `<div {{deprecatedModifier}}>`              |
 
 **Not covered (see future work):** `<MyComp @deprecatedArg={{x}}>` — argument names are not scope-registered by the parser.
 

lib/recommended-rules-gjs.js

@@ -5,5 +5,5 @@
  * definitions, execute "npm run update"
  */
 module.exports = {
-  "ember/template-no-let-reference": "error"
+  'ember/template-no-let-reference': 'error',
 };

lib/recommended-rules-gts.js

@@ -5,6 +5,5 @@
  * definitions, execute "npm run update"
  */
 module.exports = {
-  "ember/template-no-deprecated": "error",
-  "ember/template-no-let-reference": "error"
+  'ember/template-no-let-reference': 'error',
 };

lib/rules/template-no-deprecated.js

@@ -1,7 +1,7 @@
 'use strict';
 
-const tsutils = require('ts-api-utils');
-const ts = require('typescript');
+// ts.SymbolFlags.Alias = 2097152 (1 << 21) — stable across all TypeScript versions
+const TS_ALIAS_FLAG = 2_097_152;
 
 /** @type {import('eslint').Rule.RuleModule} */
 module.exports = {
@@ -11,10 +11,8 @@ module.exports = {
       description:
         'disallow using deprecated Glimmer components, helpers, and modifiers in templates',
       category: 'Ember Octane',
-      recommendedGts: true,
       url: 'https://github.com/ember-cli/eslint-plugin-ember/tree/master/docs/rules/template-no-deprecated.md',
     },
-    requiresTypeChecking: true,
     schema: [],
     messages: {
       deprecated: '`{{name}}` is deprecated.',
@@ -44,27 +42,30 @@ module.exports = {
         return undefined;
       }
       const displayParts = tag.text;
-      return displayParts ? ts.displayPartsToString(displayParts) : '';
+      return displayParts ? displayParts.map((p) => p.text).join('') : '';
     }
 
     function searchForDeprecationInAliasesChain(symbol, checkAliasedSymbol) {
-      if (!symbol || !tsutils.isSymbolFlagSet(symbol, ts.SymbolFlags.Alias)) {
+      // eslint-disable-next-line no-bitwise
+      if (!symbol || !(symbol.flags & TS_ALIAS_FLAG)) {
         return checkAliasedSymbol ? getJsDocDeprecation(symbol) : undefined;
       }
       const targetSymbol = checker.getAliasedSymbol(symbol);
-      while (tsutils.isSymbolFlagSet(symbol, ts.SymbolFlags.Alias)) {
-        const reason = getJsDocDeprecation(symbol);
-        if (reason != null) {
+      let current = symbol;
+      // eslint-disable-next-line no-bitwise
+      while (current.flags & TS_ALIAS_FLAG) {
+        const reason = getJsDocDeprecation(current);
+        if (reason !== undefined) {
           return reason;
         }
         const immediateAliasedSymbol =
-          symbol.getDeclarations() && checker.getImmediateAliasedSymbol(symbol);
+          current.getDeclarations() && checker.getImmediateAliasedSymbol(current);
         if (!immediateAliasedSymbol) {
           break;
         }
-        symbol = immediateAliasedSymbol;
-        if (checkAliasedSymbol && symbol === targetSymbol) {
-          return getJsDocDeprecation(symbol);
+        current = immediateAliasedSymbol;
+        if (checkAliasedSymbol && current === targetSymbol) {
+          return getJsDocDeprecation(current);
         }
       }
       return undefined;
@@ -92,7 +93,7 @@ module.exports = {
       }
 
       const reason = searchForDeprecationInAliasesChain(symbol, true);
-      if (reason == null) {
+      if (reason === undefined) {
         return;
       }
 

tests/lib/rules/template-no-deprecated.js

@@ -85,6 +85,7 @@ ruleTesterTyped.run('template-no-deprecated (with TS project)', rule, {
         import DeprecatedComponent from './deprecated-component';
         <template><DeprecatedComponent /></template>
       `,
+      output: null,
       errors: [{ messageId: 'deprecatedWithReason', type: 'GlimmerElementNodePart' }],
     },
     // Deprecated helper in mustache position
@@ -94,6 +95,7 @@ ruleTesterTyped.run('template-no-deprecated (with TS project)', rule, {
         import { deprecatedHelper } from './deprecated-helper';
         <template>{{deprecatedHelper}}</template>
       `,
+      output: null,
       errors: [{ messageId: 'deprecated', type: 'VarHead' }],
     },
     // Deprecated component in block position
@@ -103,6 +105,7 @@ ruleTesterTyped.run('template-no-deprecated (with TS project)', rule, {
         import DeprecatedComponent from './deprecated-component';
         <template>{{#DeprecatedComponent}}{{/DeprecatedComponent}}</template>
       `,
+      output: null,
       errors: [{ messageId: 'deprecatedWithReason', type: 'VarHead' }],
     },
   ],