ember-cli · Copilot · Feb 17, 2026 · Feb 17, 2026 · Feb 17, 2026
diff --git a/README.md b/README.md
@@ -176,10 +176,11 @@ rules in templates can be disabled with eslint directives with mustache or html
 
 ### Best Practices
 
-| Name                                                       | Description                        | 💼 | 🔧 | 💡 |
-| :--------------------------------------------------------- | :--------------------------------- | :- | :- | :- |
-| [template-no-debugger](docs/rules/template-no-debugger.md) | disallow {{debugger}} in templates |    |    |    |
-| [template-no-log](docs/rules/template-no-log.md)           | disallow {{log}} in templates      |    |    |    |
+| Name                                                                             | Description                                                  | 💼 | 🔧 | 💡 |
+| :------------------------------------------------------------------------------- | :----------------------------------------------------------- | :- | :- | :- |
+| [template-no-accesskey-attribute](docs/rules/template-no-accesskey-attribute.md) | disallow `accesskey` attribute on HTML elements in templates |    | 🔧 |    |
+| [template-no-debugger](docs/rules/template-no-debugger.md)                       | disallow {{debugger}} in templates                           |    |    |    |
+| [template-no-log](docs/rules/template-no-log.md)                                 | disallow {{log}} in templates                                |    |    |    |
 
 ### Components
 

diff --git a/docs/rules/template-no-accesskey-attribute.md b/docs/rules/template-no-accesskey-attribute.md
@@ -0,0 +1,44 @@
+# ember/template-no-accesskey-attribute
+
+🔧 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 -->
+
+Disallows the use of `accesskey` attribute on elements.
+
+The `accesskey` attribute creates inconsistencies between keyboard shortcuts and keyboard commands used by screen readers and keyboard-only users, causing accessibility issues.
+
+## Examples
+
+Examples of **incorrect** code for this rule:
+
+```gjs
+<template>
+  <button accesskey="s">Save</button>
+</template>
+```
+
+```gjs
+<template>
+  <a href="#" accesskey="h">Home</a>
+</template>
+```
+
+Examples of **correct** code for this rule:
+
+```gjs
+<template>
+  <button>Save</button>
+</template>
+```
+
+```gjs
+<template>
+  <a href="#">Home</a>
+</template>
+```
+
+## References
+
+- [ember-template-lint no-accesskey-attribute](https://github.com/ember-template-lint/ember-template-lint/blob/master/docs/rule/no-accesskey-attribute.md)
+- [WebAIM: Keyboard Accessibility - Accesskey](https://webaim.org/techniques/keyboard/accesskey)
diff --git a/lib/recommended-rules-gjs.js b/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"
 };
diff --git a/lib/recommended-rules-gts.js b/lib/recommended-rules-gts.js
@@ -5,5 +5,5 @@
  * definitions, execute "npm run update"
  */
 module.exports = {
-  'ember/template-no-let-reference': 'error',
+  "ember/template-no-let-reference": "error"
 };
diff --git a/lib/recommended-rules.js b/lib/recommended-rules.js
@@ -75,4 +75,4 @@ module.exports = {
   "ember/routes-segments-snake-case": "error",
   "ember/use-brace-expansion": "error",
   "ember/use-ember-data-rfc-395-imports": "error"
-}
+};
diff --git a/lib/rules/template-no-accesskey-attribute.js b/lib/rules/template-no-accesskey-attribute.js
@@ -0,0 +1,54 @@
+/** @type {import('eslint').Rule.RuleModule} */
+module.exports = {
+  meta: {
+    type: 'problem',
+    docs: {
+      description: 'disallow `accesskey` attribute on HTML elements in templates',
+      category: 'Best Practices',
+      url: 'https://github.com/ember-cli/eslint-plugin-ember/tree/master/docs/rules/template-no-accesskey-attribute.md',
+    },
+    fixable: 'code',
+    schema: [],
+    messages: {
+      noAccesskey:
+        'No access key attribute allowed. Inconsistencies between keyboard shortcuts and keyboard comments used by screenreader and keyboard only users create a11y complications.',
+    },
+  },
+
+  create(context) {
+    const sourceCode = context.sourceCode;
+
+    return {
+      GlimmerElementNode(node) {
+        if (!node.attributes) {
+          return;
+        }
+
+        const accessKeyAttr = node.attributes.find(
+          (attr) =>
+            attr.type === 'GlimmerAttrNode' &&
+            attr.name &&
+            attr.name === 'accesskey'
+        );
+
+        if (accessKeyAttr) {
+          context.report({
+            node: accessKeyAttr,
+            messageId: 'noAccesskey',
+            fix(fixer) {
+              // Get the range of the attribute
+              const attrStart = accessKeyAttr.range[0];
+              const attrEnd = accessKeyAttr.range[1];
+
+              // Check if there's a space before the attribute that should be removed
+              const sourceText = sourceCode.getText();
+              const removeStart = attrStart > 0 && sourceText[attrStart - 1] === ' ' ? attrStart - 1 : attrStart;
+
+              return fixer.removeRange([removeStart, attrEnd]);
+            },
+          });
+        }
+      },
+    };
+  },
+};
diff --git a/package.json b/package.json
@@ -60,51 +60,51 @@
   },
   "dependencies": {
     "@ember-data/rfc395-data": "^0.0.4",
-    "css-tree": "^3.0.1",
-    "ember-eslint-parser": "^0.5.9",
+    "css-tree": "^3.1.0",
+    "ember-eslint-parser": "^0.5.13",
     "ember-rfc176-data": "^0.3.18",
     "eslint-utils": "^3.0.0",
     "estraverse": "^5.3.0",
     "lodash.camelcase": "^4.3.0",
     "lodash.kebabcase": "^4.1.1",
     "requireindex": "^1.2.0",
-    "snake-case": "^3.0.3"
+    "snake-case": "^3.0.4"
   },
   "devDependencies": {
-    "@babel/core": "^7.25.9",
-    "@babel/eslint-parser": "^7.22.15",
+    "@babel/core": "^7.29.0",
+    "@babel/eslint-parser": "^7.28.6",
     "@babel/plugin-proposal-class-properties": "^7.18.6",
-    "@babel/plugin-proposal-decorators": "^7.23.2",
-    "@eslint/compat": "^2.0.1",
-    "@eslint/eslintrc": "^3.0.1",
-    "@eslint/js": "^9.19.0",
-    "@types/eslint": "^8.44.6",
-    "@typescript-eslint/parser": "^8.11.0",
-    "@vitest/coverage-v8": "^2.1.3",
-    "eslint": "^8.55.0",
+    "@babel/plugin-proposal-decorators": "^7.29.0",
+    "@eslint/compat": "^2.0.2",
+    "@eslint/eslintrc": "^3.3.3",
+    "@eslint/js": "^9.39.2",
+    "@types/eslint": "^8.56.12",
+    "@typescript-eslint/parser": "^8.56.0",
+    "@vitest/coverage-v8": "^2.1.9",
+    "eslint": "^8.57.1",
     "eslint-config-prettier": "^10.1.8",
-    "eslint-doc-generator": "^2.1.2",
+    "eslint-doc-generator": "^2.4.0",
     "eslint-plugin-eslint-comments": "^3.2.0",
-    "eslint-plugin-eslint-plugin": "^5.1.1",
+    "eslint-plugin-eslint-plugin": "^5.5.1",
     "eslint-plugin-filenames": "^1.3.2",
-    "eslint-plugin-import": "^2.29.0",
+    "eslint-plugin-import": "^2.32.0",
     "eslint-plugin-markdown": "^5.1.0",
-    "eslint-plugin-n": "^17.11.1",
-    "eslint-plugin-unicorn": "^51.0.0",
+    "eslint-plugin-n": "^17.24.0",
+    "eslint-plugin-unicorn": "^51.0.1",
     "eslint-remote-tester": "^3.0.1",
-    "globals": "^16.4.0",
+    "globals": "^16.5.0",
     "jquery": "^3.7.1",
-    "jsdom": "^24.0.0",
+    "jsdom": "^24.1.3",
     "markdownlint-cli": "^0.42.0",
-    "npm-package-json-lint": "^7.0.0",
+    "npm-package-json-lint": "^7.1.0",
     "npm-run-all": "^4.1.5",
-    "prettier": "^3.0.3",
-    "release-plan": "^0.17.0",
-    "sort-package-json": "^2.6.0",
-    "typescript": "^5.2.2",
-    "typescript-eslint": "^8.7.0",
-    "vite": "^7.1.12",
-    "vitest": "^2.1.3"
+    "prettier": "^3.8.1",
+    "release-plan": "^0.17.4",
+    "sort-package-json": "^2.15.1",
+    "typescript": "^5.9.3",
+    "typescript-eslint": "^8.56.0",
+    "vite": "^7.3.1",
+    "vitest": "^2.1.9"
   },
   "peerDependencies": {
     "@typescript-eslint/parser": "*",