chore: upgrade all dev dependencies (#376)

Upgrade available minor and patch versions of all dependencies, and
ESLint v9.
As part of ESLint major upgrade the ESLint config was migrated to flat
config, the plugins and rules used were cleaned up, and minor lint
issues were fixed.

.vscode/settings.json

@@ -1,3 +1,4 @@
 {
-  "typescript.enablePromptUseWorkspaceTsdk": true
+  "typescript.enablePromptUseWorkspaceTsdk": true,
+  "eslint.experimental.useFlatConfig": true
 }

eslint.config.js

@@ -0,0 +1,89 @@
+import tsEslint from 'typescript-eslint'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+import stylistic from '@stylistic/eslint-plugin'
+import js from '@eslint/js'
+
+import { FlatCompat } from '@eslint/eslintrc'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+  recommendedConfig: js.configs.recommended,
+})
+
+const recommendedConfig = [
+  {
+    files: ['**/*.ts', '**/*.tsx'],
+    ...tsEslint.configs.base,
+    languageOptions: {
+      ...tsEslint.configs.base.languageOptions,
+      parserOptions: {
+        EXPERIMENTAL_useProjectService: true,
+        sourceType: 'module',
+      },
+    },
+  },
+  // extract recommended config from typescript-eslint and enable it only for TS files
+  ...[
+    ...tsEslint.configs.recommended,
+    ...tsEslint.configs.recommendedTypeChecked,
+    ...tsEslint.configs.stylistic,
+    ...tsEslint.configs.stylisticTypeChecked,
+  ]
+    .map(({ rules, files }) =>
+      rules ? { rules, files: files ?? ['**/*.ts', '**/*.tsx'] } : undefined,
+    )
+    .filter(Boolean),
+]
+
+export default [
+  { ignores: ['**/__generated__/**', 'node_modules/**', 'lib/**', 'dist/**'] },
+  {
+    linterOptions: {
+      reportUnusedDisableDirectives: true,
+    },
+  },
+  ...recommendedConfig,
+  stylistic.configs['recommended-flat'],
+  js.configs.recommended,
+  ...compat
+    .config({
+      extends: ['prettier'],
+    })
+    .map(config => ({
+      ...config,
+    })),
+  {
+    files: ['**/*.ts', '**/*.tsx', '**/*.js', '**/*.jsx'],
+    rules: {
+      /**
+       * SECTION START: Disabled rules colliding with Prettier
+       */
+      '@stylistic/no-tabs': 'off',
+      '@stylistic/indent': 'off',
+      '@stylistic/semi': 'off',
+      '@stylistic/brace-style': 'off',
+      '@stylistic/member-delimiter-style': 'off',
+      '@stylistic/quotes': 'off',
+      '@stylistic/indent-binary-ops': 'off',
+      '@stylistic/operator-linebreak': 'off',
+      '@stylistic/arrow-parens': 'off',
+      '@stylistic/quote-props': 'off',
+      '@stylistic/no-mixed-spaces-and-tabs': 'off',
+      /**
+       * SECTION END
+       */
+      'no-console': 'off',
+      'no-restricted-syntax': 'off',
+      'arrow-parens': 'off',
+      'no-underscore-dangle': 'off',
+      camelcase: 'off',
+      semi: 'off',
+      'implicit-arrow-linebreak': 'off',
+      'no-undef': 'off',
+    },
+  },
+]