feat!: drop eslint v8 support

bmish · bmish · commit 5a2682e6e0d8 · 2025-06-19T14:19:14.000-04:00
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
@@ -38,17 +38,6 @@ jobs:
       - run: npm install
       - run: npm run lint
 
-  eslint8:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version: "lts/*"
-      - run: npm install
-      - run: npm install --save-dev eslint@8
-      - run: npm test
-
   test-remote:
     name: eslint-remote-tester
     runs-on: ubuntu-latest
diff --git a/package.json b/package.json
@@ -86,7 +86,7 @@
     "typescript": "^5.7.2"
   },
   "peerDependencies": {
-    "eslint": ">=8.23.0"
+    "eslint": ">=9.0.0"
   },
   "engines": {
     "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
diff --git a/tests/lib/eslint-rule-tester.js b/tests/lib/eslint-rule-tester.js
diff --git a/tests/lib/rules/consistent-output.js b/tests/lib/rules/consistent-output.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/consistent-output');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 const ERROR = { messageId: 'missingOutput', type: 'ObjectExpression' };
 
diff --git a/tests/lib/rules/fixer-return.js b/tests/lib/rules/fixer-return.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/fixer-return');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/meta-property-ordering.js b/tests/lib/rules/meta-property-ordering.js
@@ -9,7 +9,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/meta-property-ordering');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/no-deprecated-context-methods.js b/tests/lib/rules/no-deprecated-context-methods.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-deprecated-context-methods');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/no-deprecated-report-api.js b/tests/lib/rules/no-deprecated-report-api.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-deprecated-report-api');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/no-identical-tests.js b/tests/lib/rules/no-identical-tests.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-identical-tests');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 const ERROR_OBJECT_TEST = { messageId: 'identical', type: 'ObjectExpression' };
 const ERROR_STRING_TEST = { messageId: 'identical', type: 'Literal' };
diff --git a/tests/lib/rules/no-meta-replaced-by.js b/tests/lib/rules/no-meta-replaced-by.js
@@ -9,7 +9,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-meta-replaced-by');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/no-meta-schema-default.js b/tests/lib/rules/no-meta-schema-default.js
@@ -5,7 +5,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-meta-schema-default');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/no-missing-message-ids.js b/tests/lib/rules/no-missing-message-ids.js
@@ -5,7 +5,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-missing-message-ids');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/no-missing-placeholders.js b/tests/lib/rules/no-missing-placeholders.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-missing-placeholders');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 /**
  * Create an error for the given key
diff --git a/tests/lib/rules/no-only-tests.js b/tests/lib/rules/no-only-tests.js
@@ -5,7 +5,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-only-tests');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/no-property-in-node.js b/tests/lib/rules/no-property-in-node.js
@@ -1,6 +1,6 @@
 'use strict';
 
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 const path = require('path');
 const rule = require('../../../lib/rules/no-property-in-node');
 
diff --git a/tests/lib/rules/no-unused-message-ids.js b/tests/lib/rules/no-unused-message-ids.js
@@ -5,7 +5,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-unused-message-ids');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/no-unused-placeholders.js b/tests/lib/rules/no-unused-placeholders.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-unused-placeholders');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 /**
  * Create an error for the given key
diff --git a/tests/lib/rules/no-useless-token-range.js b/tests/lib/rules/no-useless-token-range.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/no-useless-token-range');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 /**
  * Wraps a code sample as an eslint rule
diff --git a/tests/lib/rules/prefer-message-ids.js b/tests/lib/rules/prefer-message-ids.js
@@ -5,7 +5,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/prefer-message-ids');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/prefer-object-rule.js b/tests/lib/rules/prefer-object-rule.js
@@ -9,7 +9,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/prefer-object-rule');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/prefer-output-null.js b/tests/lib/rules/prefer-output-null.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/prefer-output-null');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 const ERROR = { messageId: 'useOutputNull', type: 'Property' };
 
diff --git a/tests/lib/rules/prefer-placeholders.js b/tests/lib/rules/prefer-placeholders.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/prefer-placeholders');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/prefer-replace-text.js b/tests/lib/rules/prefer-replace-text.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/prefer-replace-text');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/report-message-format.js b/tests/lib/rules/report-message-format.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/report-message-format');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/require-meta-default-options.js b/tests/lib/rules/require-meta-default-options.js
@@ -1,7 +1,7 @@
 'use strict';
 
 const rule = require('../../../lib/rules/require-meta-default-options');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 const ruleTester = new RuleTester({
   languageOptions: { sourceType: 'commonjs' },
diff --git a/tests/lib/rules/require-meta-docs-description.js b/tests/lib/rules/require-meta-docs-description.js
@@ -5,7 +5,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/require-meta-docs-description');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/require-meta-docs-recommended.js b/tests/lib/rules/require-meta-docs-recommended.js
@@ -1,7 +1,7 @@
 'use strict';
 
 const rule = require('../../../lib/rules/require-meta-docs-recommended');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 const ruleTester = new RuleTester({
   languageOptions: { sourceType: 'commonjs' },
diff --git a/tests/lib/rules/require-meta-docs-url.js b/tests/lib/rules/require-meta-docs-url.js
@@ -10,7 +10,7 @@
 // Requirements
 // -----------------------------------------------------------------------------
 
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 const rule = require('../../../lib/rules/require-meta-docs-url');
 
 // -----------------------------------------------------------------------------
diff --git a/tests/lib/rules/require-meta-fixable.js b/tests/lib/rules/require-meta-fixable.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/require-meta-fixable');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/require-meta-has-suggestions.js b/tests/lib/rules/require-meta-has-suggestions.js
@@ -5,7 +5,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/require-meta-has-suggestions');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/require-meta-schema-description.js b/tests/lib/rules/require-meta-schema-description.js
@@ -5,7 +5,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/require-meta-schema-description');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/require-meta-schema.js b/tests/lib/rules/require-meta-schema.js
@@ -5,7 +5,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/require-meta-schema');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/require-meta-type.js b/tests/lib/rules/require-meta-type.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/require-meta-type');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/test-case-property-ordering.js b/tests/lib/rules/test-case-property-ordering.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/test-case-property-ordering');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 // ------------------------------------------------------------------------------
 // Tests
diff --git a/tests/lib/rules/test-case-shorthand-strings.js b/tests/lib/rules/test-case-shorthand-strings.js
@@ -10,7 +10,7 @@
 // ------------------------------------------------------------------------------
 
 const rule = require('../../../lib/rules/test-case-shorthand-strings');
-const RuleTester = require('../eslint-rule-tester').RuleTester;
+const RuleTester = require('eslint').RuleTester;
 
 /**
  * Returns the code for some valid test cases
