Add support for eslint v8

.github/workflows/test.yml

@@ -8,13 +8,30 @@ env:
   CI: true
 
 jobs:
+  lint:
+    name: 'Lint'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup Node.js 14
+        uses: actions/setup-node@v2
+        with:
+          node-version: 14
+      - name: Install
+        run: yarn install
+      - name: Lint
+        run: yarn lint
+      - name: Lint docs
+        run: yarn lint:docs
   test:
-    name: 'Test on Node.js ${{ matrix.node }} OS: ${{matrix.os}}'
+    name: 'Test for ESLint ${{ matrix.eslint }} on Node.js ${{ matrix.node }} OS: ${{matrix.os}}'
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [ubuntu-latest]
         node: [12, 14, 16]
+        eslint: [7, ^8.0.0-0]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -24,10 +41,9 @@ jobs:
           node-version: ${{ matrix.node }}
       - name: Install
         run: yarn install
-      - name: Lint
-        run: yarn lint
-      - name: Lint docs
-        run: yarn lint:docs
+      - name: Install ESLint ${{ matrix.eslint }}
+        run: yarn add -D eslint@${{ matrix.eslint }}
+        if: matrix.eslint != 7
       - name: Test
         run: yarn test
       - name: Integration Test

package.json

@@ -28,7 +28,7 @@
     "svelte-eslint-parser": "^0.4.1"
   },
   "peerDependencies": {
-    "eslint": "^7.0.0",
+    "eslint": "^7.0.0 || ^8.0.0-0",
     "svelte": "^3.37.0"
   },
   "peerDependenciesMeta": {