chore: update ESLint to v9

.github/workflows/ci.yml

@@ -6,17 +6,29 @@ on:
       - main
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   ci:
-    name: Lint and Test on Node ${{ matrix.node-version }}
+    name: Lint and Test on Node ${{ matrix.node-version }} (ESLint ${{ matrix.eslint-version }})
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         node-version:
-          - 14
-          - 16
-          - 18
+          - 22
           - 20
+          - 18
+        eslint-version:
+          - 9
+          - 8
+        include:
+          - node-version: 16
+            eslint-version: 8
+          - node-version: 14
+            eslint-version: 8
 
     steps:
       - uses: actions/checkout@v4
@@ -32,6 +44,10 @@ jobs:
       - name: Install
         run: pnpm install
 
+      - name: Install ESLint ${{ matrix.node-version }}
+        if: ${{ matrix.eslint-version != 9 }}
+        run: pnpm install -D eslint@${{ matrix.eslint-version }} eslint-plugin-svelte@2 svelte@3
+
       - name: Test
         run: pnpm mocha
 

.nvmrc

@@ -1 +1 @@
-16
+20

.remarkrc.mjs

@@ -0,0 +1,5 @@
+import preset from '@1stg/remark-preset';
+
+export default {
+  plugins: [preset],
+};

eslint.config.js

@@ -13,6 +13,7 @@ module.exports = [
   eslintPluginMdx.flat,
   eslintPluginMdx.flatCodeBlocks,
   eslintPluginPrettierRecommended,
+  { files: ['**/*.mjs'], languageOptions: { sourceType: 'module' } },
   {
     rules: {
       'eslint-plugin/report-message-format': ['error', '^[^a-z].*\\.$'],

package.json

@@ -67,45 +67,43 @@
     "synckit": "^0.9.1"
   },
   "devDependencies": {
-    "@1stg/remark-preset": "^2.0.0",
+    "@1stg/remark-preset": "^3.0.0",
     "@changesets/changelog-github": "^0.5.0",
     "@changesets/cli": "^2.27.1",
     "@commitlint/config-conventional": "^18.4.3",
     "@eslint-community/eslint-plugin-eslint-comments": "^4.4.1",
-    "@eslint/js": "^8.56.0",
+    "@eslint/js": "^9.21.0",
     "@graphql-eslint/eslint-plugin": "^3.20.1",
     "@html-eslint/parser": "^0.24.1",
     "@prettier/plugin-pug": "^3.0.0",
-    "@types/eslint": "^8.56.0",
     "@types/prettier-linter-helpers": "^1.0.4",
     "commitlint": "^18.4.3",
-    "eslint": "^8.56.0",
-    "eslint-config-prettier": "^9.1.0",
+    "eslint": "^9.21.0",
+    "eslint-config-prettier": "^10.1.1",
     "eslint-formatter-friendly": "^7.0.0",
-    "eslint-mdx": "^2.3.0",
+    "eslint-mdx": "^3.1.5",
     "eslint-plugin-eslint-plugin": "^5.2.1",
-    "eslint-plugin-mdx": "^2.3.0",
+    "eslint-plugin-mdx": "^3.2.0",
     "eslint-plugin-n": "^16.5.0",
     "eslint-plugin-prettier": "link:.",
     "eslint-plugin-pug": "^1.2.5",
-    "eslint-plugin-svelte": "^2.35.1",
-    "eslint-plugin-svelte3": "^4.0.0",
+    "eslint-plugin-svelte": "^3.0.2",
     "graphql": "^16.8.1",
     "lint-staged": "^15.2.0",
     "mocha": "^10.2.0",
-    "prettier": "^3.1.1",
+    "prettier": "^3.5.3",
     "prettier-plugin-pkg": "^0.18.0",
     "prettier-plugin-svelte": "^3.1.2",
     "simple-git-hooks": "^2.9.0",
-    "svelte": "^4.2.8",
+    "svelte": "^5.20.5",
     "vue-eslint-parser": "^9.3.2"
   },
   "pnpm": {
     "patchedDependencies": {
-      "@types/eslint@8.56.0": "patches/@types__eslint@8.56.0.patch"
+      "unified-engine@11.2.2": "patches/unified-engine@11.2.2.patch"
     },
     "overrides": {
-      "prettier": "^3.1.1"
+      "prettier": "^3.5.3"
     }
   }
 }

patches/unified-engine@11.2.2.patch

@@ -0,0 +1,52 @@
+diff --git a/lib/configuration.js b/lib/configuration.js
+index 77f3969c1c583c5869f636076c15892d7f2da18f..48b3df03392ab1aafb5e714f39c015e2633ee0e2 100644
+--- a/lib/configuration.js
++++ b/lib/configuration.js
+@@ -78,7 +78,7 @@
+  *   Shared settings for parsers and compilers (optional).
+  */
+
+-import assert from 'node:assert/strict'
++import assert from 'node:assert'
+ import path from 'node:path'
+ import {fileURLToPath, pathToFileURL} from 'node:url'
+ import extend from 'extend'
+diff --git a/lib/file-pipeline/stringify.js b/lib/file-pipeline/stringify.js
+index d5e4e0d6d59ba76d72dc394b42e6e890a5d5e48e..01f0cf74a806ba17047b5e7f1587671cce38bbe5 100644
+--- a/lib/file-pipeline/stringify.js
++++ b/lib/file-pipeline/stringify.js
+@@ -3,7 +3,7 @@
+  * @import {Context} from './index.js'
+  */
+
+-import assert from 'node:assert/strict'
++import assert from 'node:assert'
+ import createDebug from 'debug'
+ import {inspectColor, inspectNoColor} from 'unist-util-inspect'
+ import {statistics} from 'vfile-statistics'
+diff --git a/lib/file-pipeline/transform.js b/lib/file-pipeline/transform.js
+index a80702c25b5c6f6ffff52829a7bf98fe5f87cb3d..d6489b46bc5a113a14cfa4ab12c9a7aca1a777ea 100644
+--- a/lib/file-pipeline/transform.js
++++ b/lib/file-pipeline/transform.js
+@@ -4,7 +4,7 @@
+  * @import {Context} from './index.js'
+  */
+
+-import assert from 'node:assert/strict'
++import assert from 'node:assert'
+ import createDebug from 'debug'
+ import {statistics} from 'vfile-statistics'
+
+diff --git a/lib/find-up.js b/lib/find-up.js
+index 81623700c8b53572ca7b0dd3e6d7c239b027d50c..9ff6176124f26f028c20d9142184e16cd8a5357d 100644
+--- a/lib/find-up.js
++++ b/lib/find-up.js
+@@ -48,7 +48,7 @@
+  *   Turn a found file into a value.
+  */
+
+-import assert from 'node:assert/strict'
++import assert from 'node:assert'
+ import fs from 'node:fs'
+ import path from 'node:path'
+ import {fileURLToPath} from 'node:url'