feat: support ESLint 7.x

.github/workflows/CI.yml

@@ -41,17 +41,21 @@ jobs:
             matrix.os }})
         strategy:
             matrix:
-                eslint: [6]
+                eslint: [7]
                 node: [12.22.0, 12, 14.17.0, 14, 16, 18]
                 os: [ubuntu-latest]
                 include:
                     # On other platforms
                     - os: windows-latest
-                      eslint: 6
+                      eslint: 7
                       node: 18
                     - os: macos-latest
-                      eslint: 6
+                      eslint: 7
                       node: 18
+                    # On old ESLint versions
+                    - eslint: 6
+                      node: 18
+                      os: ubuntu-latest
                     # On the minimum supported ESLint/Node.js version
                     - eslint: 6.6.0
                       node: 12.22.0
@@ -72,8 +76,8 @@ jobs:
             - name: 📥 Install dependencies
               run: npm install
 
-            # - name: 📥 Install ESLint v${{ matrix.eslint }}
-            #   run: npm install --save-dev eslint@${{ matrix.eslint }}
+            - name: 📥 Install ESLint v${{ matrix.eslint }}
+              run: npm install --save-dev eslint@${{ matrix.eslint }}
 
             - name: ▶️ Run test script
               run: npm run test

README.md

@@ -17,7 +17,7 @@ npm install --save-dev eslint @eslint-community/eslint-plugin-mysticatea
 ### Requirements
 
 -   Node.js `^12.22.0 || ^14.17.0 || >=16.0.0` or newer versions.
--   ESLint `^6.6.0` or newer versions.
+-   ESLint `^6.6.0 || ^7.0.0` or newer versions.
 
 ## 📖 Usage
 

lib/configs/_base.js

@@ -27,6 +27,7 @@ module.exports = {
         "consistent-return": "error",
         curly: "error",
         "default-case": "error",
+        "default-case-last": "error",
         "default-param-last": "error",
         "dot-notation": "error",
         eqeqeq: ["error", "always", { null: "ignore" }],
@@ -92,6 +93,7 @@ module.exports = {
         "no-lone-blocks": "error",
         "no-lonely-if": "error",
         "no-loop-func": "error",
+        "no-loss-of-precision": "error",
         "no-misleading-character-class": "error",
         "no-mixed-operators": [
             "error",
@@ -106,12 +108,14 @@ module.exports = {
         "no-new-object": "error",
         "no-new-require": "error",
         "no-new-wrappers": "error",
+        "no-nonoctal-decimal-escape": "error",
         "no-obj-calls": "error",
         "no-octal": "error",
         "no-octal-escape": "error",
         "no-param-reassign": ["error", { props: false }],
         "no-process-env": "error",
         "no-process-exit": "error",
+        "no-promise-executor-return": "error",
         "no-prototype-builtins": "error",
         "no-redeclare": ["error", { builtinGlobals: true }],
         "no-regex-spaces": "error",
@@ -142,8 +146,10 @@ module.exports = {
         "no-unmodified-loop-condition": "error",
         "no-unneeded-ternary": "error",
         "no-unreachable": "error",
+        "no-unreachable-loop": "error",
         "no-unsafe-finally": "error",
         "no-unsafe-negation": ["error", { enforceForOrderingRelations: true }],
+        "no-unsafe-optional-chaining": "error",
         "no-unused-expressions": "error",
         "no-unused-labels": "error",
         "no-unused-vars": [
@@ -157,6 +163,7 @@ module.exports = {
             },
         ],
         "no-use-before-define": ["error", "nofunc"],
+        "no-useless-backreference": "error",
         "no-useless-call": "error",
         "no-useless-catch": "error",
         "no-useless-concat": "error",
@@ -299,6 +306,7 @@ module.exports = {
         "guard-for-in": "off",
         "handle-callback-err": "off",
         "id-blacklist": "off",
+        "id-denylist": "off",
         "id-length": "off",
         "id-match": "off",
         "line-comment-position": "off",
@@ -332,6 +340,7 @@ module.exports = {
         "no-path-concat": "off",
         "no-plusplus": "off",
         "no-proto": "off",
+        "no-restricted-exports": "off",
         "no-restricted-globals": "off",
         "no-restricted-imports": "off",
         "no-restricted-modules": "off",
@@ -409,9 +418,7 @@ module.exports = {
                 semi: false,
                 tabWidth: 4,
             },
-            {
-                usePrettierrc: false,
-            },
+            { usePrettierrc: false },
         ],
 
         // my own

lib/configs/_override-special.js

@@ -18,7 +18,6 @@ module.exports = {
             extends: [require.resolve("./+node.js")],
             rules: {
                 "no-console": "off",
-                "no-process-env": "off",
             },
         },
         {
@@ -33,7 +32,6 @@ module.exports = {
             ],
             rules: {
                 "no-console": "off",
-                "no-process-env": "off",
             },
         },
     ],

package.json

@@ -53,8 +53,9 @@
         "vue-eslint-parser": "^8.3.0"
     },
     "devDependencies": {
+        "@eslint/eslintrc": "^0.4.3",
         "@eslint-community/eslint-plugin-mysticatea": "file:.",
-        "eslint": "~6.8.0",
+        "eslint": "~7.32.0",
         "fs-extra": "^8.1.0",
         "globals": "^13.17.0",
         "mocha": "^9.2.2",
@@ -65,7 +66,7 @@
         "typescript": "^4.8.4"
     },
     "peerDependencies": {
-        "eslint": ">=6.6.0"
+        "eslint": "^6.6.0 || ^7.0.0"
     },
     "engines": {
         "node": "^12.22.0 || ^14.17.0 || >=16.0.0"

tests/lib/configs/_rules.js

@@ -7,7 +7,7 @@
 const { Linter } = require("eslint")
 const {
     ConfigArrayFactory,
-} = require("eslint/lib/cli-engine/config-array-factory")
+} = require("@eslint/eslintrc/lib/config-array-factory")
 const Validator = require("eslint/lib/shared/config-validator")
 const { rules: removedRules } = require("eslint/conf/replacements.json")
 const {