eslint 9 (#2474)

* Bump eslint-plugin-github from 4.10.2 to 6.0.0

Bumps [eslint-plugin-github](https://github.com/github/eslint-plugin-github) from 4.10.2 to 6.0.0.
- [Release notes](https://github.com/github/eslint-plugin-github/releases)
- [Commits](github/eslint-plugin-github@v4.10.2...v6.0.0)

---
updated-dependencies:
- dependency-name: eslint-plugin-github
  dependency-version: 6.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* eslint 9 upgrade

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Aiqiao Yan <55104035+aiqiaoy@users.noreply.github.com>

Author: dependabot[bot]

.eslintignore

@@ -0,0 +1,62 @@
+import github from 'eslint-plugin-github'
+import jest from 'eslint-plugin-jest'
+
+const githubConfigs = github.getFlatConfigs()
+
+export default [
+  {
+    ignores: ['**/node_modules/**', '**/lib/**', '**/dist/**']
+  },
+  githubConfigs.recommended,
+  ...githubConfigs.typescript,
+  {
+    files: ['**/*.ts'],
+    languageOptions: {
+      parserOptions: {
+        project: './tsconfig.json'
+      }
+    },
+    rules: {
+      'eslint-comments/no-use': 'off',
+      'import/no-namespace': 'off',
+      'no-unused-vars': 'off',
+      '@typescript-eslint/no-unused-vars': 'error',
+      '@typescript-eslint/explicit-member-accessibility': [
+        'error',
+        {accessibility: 'no-public'}
+      ],
+      '@typescript-eslint/no-require-imports': 'error',
+      '@typescript-eslint/array-type': 'error',
+      '@typescript-eslint/await-thenable': 'error',
+      camelcase: 'off',
+      '@typescript-eslint/explicit-function-return-type': [
+        'error',
+        {allowExpressions: true}
+      ],
+      '@typescript-eslint/no-array-constructor': 'error',
+      '@typescript-eslint/no-explicit-any': 'error',
+      '@typescript-eslint/no-extraneous-class': 'error',
+      '@typescript-eslint/no-floating-promises': 'error',
+      '@typescript-eslint/no-for-in-array': 'error',
+      '@typescript-eslint/no-inferrable-types': 'error',
+      '@typescript-eslint/no-misused-new': 'error',
+      '@typescript-eslint/no-namespace': 'error',
+      '@typescript-eslint/no-non-null-assertion': 'warn',
+      '@typescript-eslint/no-unnecessary-qualifier': 'error',
+      '@typescript-eslint/no-unnecessary-type-assertion': 'error',
+      '@typescript-eslint/no-useless-constructor': 'error',
+      '@typescript-eslint/prefer-for-of': 'warn',
+      '@typescript-eslint/prefer-function-type': 'warn',
+      '@typescript-eslint/prefer-includes': 'error',
+      '@typescript-eslint/prefer-string-starts-ends-with': 'error',
+      '@typescript-eslint/promise-function-async': 'error',
+      '@typescript-eslint/require-array-sort-compare': 'error',
+      '@typescript-eslint/restrict-plus-operands': 'error',
+      '@typescript-eslint/unbound-method': 'error'
+    }
+  },
+  {
+    files: ['__test__/**/*.ts'],
+    ...jest.configs['flat/recommended']
+  }
+]