feat!: drop support for old eslint (#937)

Author: ota-meshi

.changeset/cool-rockets-allow.md

@@ -0,0 +1,5 @@
+---
+'eslint-plugin-svelte': major
+---
+
+feat!: drop support for old eslint

.github/workflows/NodeCI.yml

@@ -52,7 +52,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        eslint: [7, 8, 9]
+        eslint: [8, 9]
         node: [18.x, 20.x, 22.x, latest]
     steps:
       - name: Checkout
@@ -126,13 +126,8 @@ jobs:
         with:
           node-version: ${{ matrix.node }}
       - name: Install svelte@3
-        # Remove @sveltejs/kit because postinstall fails on old node.
         run: |
-          cd docs-svelte-kit
-          pnpm rm @sveltejs/kit
-          cd ..
-          pnpm install -D -w @typescript-eslint/parser@5 @typescript-eslint/eslint-plugin@5 eslint@8
-          cd packages/eslint-plugin-svelte
+          cd ./packages/eslint-plugin-svelte
           pnpm install -D svelte@3
           cd ../..
           rm -rf packages/eslint-plugin-svelte/node_modules

README.md

@@ -56,8 +56,8 @@ npm install --save-dev eslint eslint-plugin-svelte svelte
 
 > **Requirements**
 >
-> - ESLint v7.0.0 and above
-> - Node.js v14.17.x, v16.x and above
+> - ESLint v8.57.1, v9.0.0 and above
+> - Node.js v18.20.4, v20.18.0, v22.10.0 and above
 
 <!--DOCS_IGNORE_END-->
 

docs/user-guide.md

@@ -8,8 +8,8 @@ npm install --save-dev eslint eslint-plugin-svelte svelte
 
 ::: tip Requirements
 
-- ESLint v7.0.0 and above
-- Node.js v14.17.x, v16.x and above
+- ESLint v8.57.1, v9.0.0 and above
+- Node.js v18.20.4, v20.18.0, v22.10.0 and above
 
 :::
 

packages/eslint-plugin-svelte/package.json

@@ -47,7 +47,7 @@
     "version:ci": "env-cmd -e version-ci pnpm run update && changeset version"
   },
   "peerDependencies": {
-    "eslint": "^7.0.0 || ^8.0.0-0 || ^9.0.0-0",
+    "eslint": "^8.57.1 || ^9.0.0",
     "svelte": "^3.37.0 || ^4.0.0 || ^5.0.0"
   },
   "peerDependenciesMeta": {