feat: ✨ Support ESLint 8 (#696)

.all-contributorsrc

@@ -301,6 +301,15 @@
       "contributions": [
         "maintenance"
       ]
+    },
+    {
+      "login": "idahogurl",
+      "name": "Rebecca Vest",
+      "avatar_url": "https://avatars.githubusercontent.com/u/10620169?v=4",
+      "profile": "https://campcode.dev/",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "repoType": "github",

.eslintrc.js

@@ -1,16 +1,17 @@
 const config = {
-  extends: ["kentcdodds", "kentcdodds/jest"],
+  extends: ['kentcdodds', 'kentcdodds/jest'],
   rules: {
-    "valid-jsdoc": "off",
-    "max-len": "off",
-    "space-before-function-paren": [
-      "error",
+    'valid-jsdoc': 'off',
+    'max-len': 'off',
+    'space-before-function-paren': [
+      'error',
       {
-        anonymous: "never",
-        named: "never",
-        asyncArrow: "always"
+        anonymous: 'never',
+        named: 'never',
+        asyncArrow: 'always'
       }
-    ]
+    ],
+    'import/no-import-module-exports': 'off'
   }
 };
 

.github/workflows/ci.yml

@@ -1,6 +1,6 @@
 name: CI
 
-on: [push]
+on: [push, pull_request]
 
 jobs:
   ci:

.prettierrc.js

@@ -0,0 +1,4 @@
+module.exports = {
+  arrowParens: 'avoid',
+  singleQuote: true
+}

README.md

@@ -72,7 +72,7 @@ const options = {
   },
 };
 
-const formatted = format(options);
+const formatted = await format(options);
 
 // notice no semicolon in the formatted text
 formatted; // const { foo } = bar
@@ -304,6 +304,7 @@ Thanks goes to these people ([emoji key][emojis]):
   </tr>
   <tr>
     <td align="center"><a href="https://github.com/cy6erskunk"><img src="https://avatars3.githubusercontent.com/u/754849?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Igor</b></sub></a><br /><a href="#maintenance-cy6erskunk" title="Maintenance">🚧</a></td>
+    <td align="center"><a href="https://campcode.dev/"><img src="https://avatars.githubusercontent.com/u/10620169?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rebecca Vest</b></sub></a><br /><a href="https://github.com/prettier/prettier-eslint/commits?author=idahogurl" title="Code">💻</a></td>
   </tr>
 </table>
 

package.json

@@ -18,18 +18,18 @@
   ],
   "license": "MIT",
   "dependencies": {
-    "@typescript-eslint/parser": "^3.0.0",
+    "@typescript-eslint/parser": "^5.10.0",
     "common-tags": "^1.4.0",
     "dlv": "^1.1.0",
-    "eslint": "^7.9.0",
+    "eslint": "^8.7.0",
     "indent-string": "^4.0.0",
     "lodash.merge": "^4.6.0",
     "loglevel-colored-level-prefix": "^1.0.0",
-    "prettier": "^2.0.0",
+    "prettier": "^2.5.1",
     "pretty-format": "^23.0.1",
     "require-relative": "^0.8.7",
-    "typescript": "^3.9.3",
-    "vue-eslint-parser": "~7.1.0"
+    "typescript": "^4.5.4",
+    "vue-eslint-parser": "^8.0.1"
   },
   "devDependencies": {
     "@babel/cli": "^7.4.4",
@@ -40,7 +40,7 @@
     "all-contributors-cli": "^6.7.0",
     "babel-jest": "^25.0.0",
     "chalk": "^2.1.0",
-    "eslint-config-kentcdodds": "~16.0.1",
+    "eslint-config-kentcdodds": "^20.0.1",
     "husky": "^2.4.1",
     "jest": "^25.0.0",
     "jest-cli": "^25.0.0",

src/__mocks__/eslint.js

@@ -2,35 +2,35 @@
 // search around the file system for stuff
 
 const eslint = jest.requireActual('eslint');
-const { CLIEngine } = eslint;
+const { ESLint } = eslint;
 
-const mockGetConfigForFileSpy = jest.fn(mockGetConfigForFile);
-mockGetConfigForFileSpy.overrides = {};
-const mockExecuteOnTextSpy = jest.fn(mockExecuteOnText);
+const mockCalculateConfigForFileSpy = jest.fn(mockCalculateConfigForFile);
+mockCalculateConfigForFileSpy.overrides = {};
+const mockLintTextSpy = jest.fn(mockLintText);
 
 module.exports = Object.assign(eslint, {
-  CLIEngine: jest.fn(MockCLIEngine),
+  ESLint: jest.fn(MockESLint),
   mock: {
-    getConfigForFile: mockGetConfigForFileSpy,
-    executeOnText: mockExecuteOnTextSpy
+    calculateConfigForFile: mockCalculateConfigForFileSpy,
+    lintText: mockLintTextSpy
   }
 });
 
-function MockCLIEngine(...args) {
+function MockESLint(...args) {
   global.__PRETTIER_ESLINT_TEST_STATE__.eslintPath = __filename;
-  const cliEngine = new CLIEngine(...args);
-  cliEngine.getConfigForFile = mockGetConfigForFileSpy;
-  cliEngine._originalExecuteOnText = cliEngine.executeOnText;
-  cliEngine.executeOnText = mockExecuteOnTextSpy;
-  return cliEngine;
+  const eslintInstance = new ESLint(...args);
+  eslintInstance.calculateConfigForFile = mockCalculateConfigForFileSpy;
+  eslintInstance._originalLintText = eslintInstance.lintText;
+  eslintInstance.lintText = mockLintTextSpy;
+  return eslintInstance;
 }
 
-MockCLIEngine.prototype = Object.create(CLIEngine.prototype);
+MockESLint.prototype = Object.create(ESLint.prototype);
 
 // eslint-disable-next-line complexity
-function mockGetConfigForFile(filePath) {
-  if (mockGetConfigForFileSpy.throwError) {
-    throw mockGetConfigForFileSpy.throwError;
+function mockCalculateConfigForFile(filePath) {
+  if (mockCalculateConfigForFileSpy.throwError) {
+    throw mockCalculateConfigForFileSpy.throwError;
   }
   if (!filePath) {
     return {
@@ -71,10 +71,10 @@ function mockGetConfigForFile(filePath) {
   }
 }
 
-function mockExecuteOnText(...args) {
-  /* eslint babel/no-invalid-this:0 */
-  if (mockExecuteOnTextSpy.throwError) {
-    throw mockExecuteOnTextSpy.throwError;
+function mockLintText(...args) {
+  /* eslint no-invalid-this:0 */
+  if (mockLintTextSpy.throwError) {
+    throw mockLintTextSpy.throwError;
   }
-  return this._originalExecuteOnText(...args);
+  return this._originalLintText(...args);
 }