eslint v9 - context.getScope is not a function - API change

[dylang]

Have you read the Troubleshooting section?

Yes

Plugin version

v6.3.0

ESLint version

v9..9.0

Node.js version

20.16.0

package manager and version

yarn v1

Operating system

macOS

Bug description

Example error:

TypeError: context.getScope is not a function
Occurred while linting ./examples/example-web-frontend/src/hello-world.test.tsx:39
Rule: "testing-library/await-async-utils"

Steps to reproduce

run eslint in terminal or ide using eslint v9.9.0 and latest plugin.

Error output/screenshots

Rule: "testing-library/await-async-utils"
    at getInnermostFunctionScope (/project/node_modules/eslint-plugin-testing-library/dist/node-utils/index.js:205:71)
    at getInnermostReturningFunction (/project/node_modules/eslint-plugin-testing-library/dist/node-utils/index.js:331:27)
    at detectAsyncUtilWrapper (/project/node_modules/eslint-plugin-testing-library/dist/rules/await-async-utils.js:32:82)
    at CallExpression Identifier (/project/node_modules/eslint-plugin-testing-library/dist/rules/await-async-utils.js:86:21)
    at enhancedRuleInstructions.<computed> (/project/node_modules/eslint-plugin-testing-library/dist/create-testing-library-rule/detect-testing-library-utils.js:528:105)
    at ruleErrorHandler (/project/node_modules/eslint/lib/linter/linter.js:1124:48)
    at /Users/dgreene/medallia/magic-fun/node_modules/eslint/lib/linter/safe-emitter.js:45:58

ESLint configuration

Not the whole config, just the part regarding test files.
The project is using typescript-eslint@v8.0.1.

import globals from 'globals';
import testingLibrary from 'eslint-plugin-testing-library';
import { config } from 'typescript-eslint';
import jest from 'eslint-plugin-jest';
import jestDom from 'eslint-plugin-jest-dom';

export const testConfig = config({
  name: 'eslint-config-test-files',

  files: [
    '**/*.test.?(disabled.)?(m)[jt]s?(x)',
    '**/*.spec.?(m)[jt]s?(x)',
    '**/demo/**/*.[jt]s?(x)',
    '**/demo-sandbox/**/*.[jt]s?(x)',
    '**/__mocks__/**/*.[jt]s?(x)',
    '**/test/**/*.[jt]s?(x)',
    '**/fixtures/**/*.[jt]s?(x)'
  ],

  languageOptions: {
    globals: { ...globals.jest, jsdom: true }
  },

  plugins: {
    jest,
    'jest-dom': jestDom,
    'testing-library': testingLibrary
  },

  rules: {
    ...jest.configs['flat/recommended'].rules,
    ...jestDom.configs['flat/recommended'].rules,
    ...testingLibrary.configs['flat/react'].rules
  }
});

Rule(s) affected

Seems like all of them.

Anything else?

It seems that getScope was moved from context to sourceCode

https://eslint.org/docs/latest/use/troubleshooting/v9-rule-api-changes

https://eslint.org/blog/2023/09/preparing-custom-rules-eslint-v9/#context.getscope()

Do you want to submit a pull request to fix this bug?

No

[Belco90]

Thanks for reporting. In the current version of this plugin, we are only adding compatibility with flat config, but not officially with ESLint v9. I'm afraid you'll have to use the ESLint compatibility util until we release the next major of the plugin, where ESLint v9 will be properly supported.

[lemueldizon]

This below fixed the issue for me, it's a slight change compared to previous version fix pointed out in #899.

{
   ...
    files: ['**/*.test.{ts,tsx}'],
    plugins: {
      'testing-library': fixupPluginRules({
        rules: testingLibrary.rules
      })
    },
    rules: {
      ...testingLibrary.configs['flat/react'].rules,
      'testing-library/no-container': 'off',
      'testing-library/no-node-access': 'off'
    }
   ...
  }

[G-Rath]

I'll look at fixing this shortly, within the current minor

[G-Rath]

I have opened #925 which should resolve this without requiring a new major

[ixartz]

Would be great to update the peerDependencies to support ESLint v9. ESLint v8 has been deprecated: "ESLint v8.x reached end-of-life on 2024-10-05 and is no longer maintained." quoted on the official website.

Thanks

[Belco90]

Sorry for not reacting to this. I'll try to get #925 merged this week.