Update ESLint and related dependencies to v9 (#475)

Author: Fryuni

.eslintrc.json

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version: 20
 
       - name: Cache dependencies
         id: cache-dependencies
@@ -42,7 +42,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version: 20
 
       - name: Cache dependencies
         id: cache-dependencies
@@ -64,7 +64,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version: 20
 
       - name: Cache dependencies
         id: cache-dependencies
@@ -89,7 +89,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version: 20
 
       - name: Cache dependencies
         id: cache-dependencies

.github/workflows/branch-validations.yaml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version: 20
 
       - name: Cache dependencies
         id: cache-dependencies

.github/workflows/deploy-published-releases.yaml

@@ -0,0 +1,98 @@
+const eslintPlugin = require('eslint-plugin-eslint-plugin');
+const tseslint = require('@typescript-eslint/eslint-plugin');
+const tsParser = require('@typescript-eslint/parser');
+const jest = require('eslint-plugin-jest');
+const importPlugin = require('eslint-plugin-import');
+const eslintComments = require('eslint-plugin-eslint-comments');
+
+module.exports = [
+    eslintPlugin.configs['flat/recommended'],
+    {
+        files: ['src/**/*.ts'],
+        plugins: {
+            '@typescript-eslint': tseslint,
+            'jest': jest,
+            'import': importPlugin,
+            'eslint-comments': eslintComments,
+        },
+        languageOptions: {
+            parser: tsParser,
+            parserOptions: {
+                project: ['./tsconfig.json'],
+            },
+        },
+        rules: {
+            // TypeScript ESLint recommended rules
+            ...tseslint.configs.recommended.rules,
+
+            // TypeScript specific rules from @croct/typescript config
+            '@typescript-eslint/array-type': ['error', {
+                default: 'array-simple',
+            }],
+            '@typescript-eslint/prefer-as-const': 'error',
+            '@typescript-eslint/adjacent-overload-signatures': 'error',
+            '@typescript-eslint/strict-boolean-expressions': ['error', {
+                allowString: false,
+                allowNumber: false,
+                allowNullableObject: false,
+            }],
+            '@typescript-eslint/prefer-optional-chain': 'error',
+            '@typescript-eslint/no-shadow': ['error', {
+                ignoreTypeValueShadow: true,
+                ignoreFunctionTypeParameterNameValueShadow: true,
+            }],
+            '@typescript-eslint/no-empty-interface': 'off',
+            '@typescript-eslint/explicit-member-accessibility': ['error'],
+            '@typescript-eslint/explicit-module-boundary-types': 'off',
+            '@typescript-eslint/explicit-function-return-type': ['error'],
+            '@typescript-eslint/no-explicit-any': 'off',
+            '@typescript-eslint/no-use-before-define': 'off',
+            '@typescript-eslint/no-unused-expressions': 'error',
+            '@typescript-eslint/no-unused-vars': ['error', {
+                args: 'after-used',
+                ignoreRestSiblings: true,
+            }],
+            '@typescript-eslint/no-non-null-assertion': 'off',
+            '@typescript-eslint/no-namespace': 'off',
+
+            // Disable base rules in favor of TypeScript versions
+            'no-shadow': 'off',
+            'no-use-before-define': 'off',
+            'no-unused-expressions': 'off',
+            'no-unused-vars': 'off',
+            'no-undef': 'off',
+
+            // JavaScript rules from @croct/javascript config (subset relevant for this project)
+            'indent': ['error', 4, {SwitchCase: 1}],
+            'linebreak-style': ['error', 'unix'],
+            'quotes': ['error', 'single', {avoidEscape: true}],
+            'semi': ['error', 'always'],
+            'comma-dangle': ['error', 'always-multiline'],
+            'max-len': ['error', {code: 120}],
+            'no-multiple-empty-lines': ['error', {max: 1, maxEOF: 0, maxBOF: 0}],
+            'eol-last': ['error', 'always'],
+            'object-curly-spacing': ['error', 'never'],
+
+            // Import rules
+            'import/no-duplicates': 'error',
+            'import/first': 'error',
+            'import/newline-after-import': 'error',
+
+            // ESLint comments rules
+            'eslint-comments/disable-enable-pair': ['error', {allowWholeFile: true}],
+            'eslint-comments/no-unused-disable': 'error',
+        },
+    },
+    {
+        files: ['src/**/*.test.ts'],
+        plugins: {
+            'jest': jest,
+        },
+        rules: {
+            ...jest.configs.recommended.rules,
+            'jest/consistent-test-it': ['error', {fn: 'it'}],
+            'jest/prefer-lowercase-title': ['error', {ignore: ['describe']}],
+            '@typescript-eslint/explicit-function-return-type': 'off',
+        },
+    },
+];