Drop support for ESLint < 9.15

Author: fasttime

.github/workflows/nodejs.yml

@@ -1,6 +1,11 @@
 name: Node.js CI
 
-on: [push, pull_request]
+on:
+  push:
+    branches: ['**']
+    tags-ignore: ['**']
+  pull_request:
+    branches: ['**']
 
 jobs:
 
@@ -9,10 +14,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-node@v4
+    - uses: actions/checkout@v5
+    - uses: actions/setup-node@v5
       with:
-        node-version: '22'
+        node-version: '24'
     - run: |
         npm install
         gulp lint
@@ -25,11 +30,11 @@ jobs:
 
     strategy:
       matrix:
-        node-version: ['18', '20', '22']
+        node-version: ['18', '20', '22', '24']
 
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-node@v4
+    - uses: actions/checkout@v5
+    - uses: actions/setup-node@v5
       with:
         node-version: ${{ matrix.node-version }}
     - run: |

README.md

@@ -10,34 +10,29 @@ Install ESLint and `@origin-1/eslint-plugin`:
 npm i --save-dev eslint @origin-1/eslint-plugin
 ```
 
-### Note
-
-If you installed ESLint globally (using the `-g` flag) then you must also install plugins globally:
-
-```console
-npm i -g @origin-1/eslint-plugin
-```
-
 ## Usage
 
-Add `"@origin-1"` to the `"plugins"` section of your `.eslintrc` configuration file.
-Then configure the rules defined by this plugin under the `"rules"` section.
+Add `"@origin-1"` to the `plugins` section of a configuration object in your ESLint configuration
+file.
+Then configure the rules defined by this plugin under the `rules` section.
+
+```js
+import origin1 from "@origin-1/eslint-plugin";
 
-```json
+export default
 {
-    "plugins": [
-        "@origin-1"
-    ],
-    "rules": {
-        "@origin-1/bracket-layout": "error",
-        "@origin-1/indent": "error",
-        "@origin-1/nice-space-before-function-paren": "error",
-        "@origin-1/no-extra-new": "error",
-        "@origin-1/no-spaces-in-call-expression": "error",
-        "@origin-1/no-spaces-in-tagged-template": "error",
-        "@origin-1/property-colon-spacing": "error"
+    plugins: { "@origin-1": origin1 },
+    rules:
+    {
+        "@origin-1/bracket-layout":                     "error",
+        "@origin-1/indent":                             "error",
+        "@origin-1/nice-space-before-function-paren":   "error",
+        "@origin-1/no-extra-new":                       "error",
+        "@origin-1/no-spaces-in-call-expression":       "error",
+        "@origin-1/no-spaces-in-tagged-template":       "error",
+        "@origin-1/property-colon-spacing":             "error"
     }
-}
+};
 ```
 
 ## Rules

gulpfile.js

@@ -22,7 +22,7 @@ task
         [
             { finished },
             { createFlatConfig },
-            { default: eslintPluginAll },
+            { default: { configs: { all: eslintPluginAll } } },
             { default: globals },
             { default: gulpESLintNew },
         ] =
@@ -31,7 +31,7 @@ task
             [
                 import('node:stream/promises'),
                 import('@origin-1/eslint-config'),
-                import('eslint-plugin-eslint-plugin/configs/all'),
+                import('eslint-plugin-eslint-plugin'),
                 import('globals'),
                 import('gulp-eslint-new'),
             ],

lib/rules/indent.js

@@ -24,14 +24,21 @@ function isTemplateToken(token)
 
 const meta =
 {
-    type:       'layout',
+    type:           'layout',
     docs:
     {
         description:    'Enforce consistent indentation',
         url:            makeRuleDocsURL('indent'),
     },
-    fixable:    'whitespace',
-    schema:     [{ type: 'integer' }],
+    fixable:        'whitespace',
+    schema:
+    [
+        {
+            type:           'integer',
+            description:    'Expected indentation of the first line of code, in units of 4 spaces',
+        },
+    ],
+    defaultOptions: [0],
     messages:
     {
         indent:
@@ -267,7 +274,7 @@ function create(context)
         }
     }
 
-    const initialIndentUnits = context.options[0] ?? 0;
+    const [initialIndentUnits] = context.options;
     const sourceCode = context.getSourceCode();
     const sourceLines = sourceCode.getLines();
     const lineCount = sourceLines.length;

package.json

@@ -31,7 +31,7 @@
   },
   "devDependencies": {
     "@origin-1/eslint-config": "latest",
-    "@typescript-eslint/parser": "rc-v8",
+    "@typescript-eslint/parser": "latest",
     "c8js": "latest",
     "eslint-formatter-compact": "latest",
     "eslint-plugin-eslint-plugin": "latest",
@@ -40,9 +40,9 @@
     "mocha": "latest"
   },
   "peerDependencies": {
-    "eslint": "^8.44 || 9"
+    "eslint": "^9.15"
   },
   "engines": {
-    "node": ">=18"
+    "node": "^18.18 || ^20.9 || >=21.1"
   }
 }