chore: update eslint to v9 and migrate to new config format

- Updated `eslint` to `v9.36.0`
- Replace `@typescript-eslint/parser` and `@typescript-eslint/eslint-plugin` with `typescript-eslint`
- Migrated to new flat config format using `eslint.config.mjs`
- Updated related dependencies to compatible versions

Author: risantos

.eslintignore

@@ -0,0 +1,80 @@
+import { defineConfig, globalIgnores } from 'eslint/config'
+import eslintPluginImport from 'eslint-plugin-import'
+import eslintPluginN from 'eslint-plugin-n'
+import eslintPluginPromise from 'eslint-plugin-promise'
+import globals from 'globals'
+import standard from 'eslint-config-standard'
+import tseslint from 'typescript-eslint'
+
+export default defineConfig([
+  {
+    languageOptions: {
+      parserOptions: {
+        ecmaFeatures: standard.parserOptions.ecmaFeatures,
+        ecmaVersion: 2022
+      },
+      globals: {
+        ...globals.es2021,
+        ...globals.node,
+        document: 'readonly',
+        navigator: 'readonly',
+        window: 'readonly'
+      }
+    },
+    name: 'zcli/standard',
+    plugins: {
+      import: eslintPluginImport,
+      n: eslintPluginN,
+      promise: eslintPluginPromise
+    },
+    rules: {
+      ...standard.rules,
+      'no-unused-expressions': ['error', {
+        allowShortCircuit: true,
+        allowTernary: true,
+        allowTaggedTemplates: true
+      }]
+    }
+  },
+  {
+    extends: [tseslint.configs.recommended],
+    files: ['**/*.ts', '**/*.test.ts'],
+    languageOptions: {
+      parser: tseslint.parser,
+      parserOptions: {
+        sourceType: 'module'
+      }
+    },
+    name: 'zcli/monorepo',
+    rules: {
+      '@typescript-eslint/no-unused-expressions': ['error', {
+        allowShortCircuit: true,
+        allowTernary: true,
+        allowTaggedTemplates: true
+      }],
+      '@typescript-eslint/camelcase': 'off',
+      '@typescript-eslint/explicit-function-return-type': 'off',
+      '@typescript-eslint/no-unused-vars': [2, { argsIgnorePattern: '^_', varsIgnorePattern: '^_.+', caughtErrorsIgnorePattern: '^_.+' }],
+      'eol-last': ['error', 'always'],
+      'space-before-blocks': ['error', 'always'],
+      camelcase: 'off',
+      indent: ['error', 2],
+      semi: 'off'
+    }
+  },
+  {
+    files: ['**/*.test.ts'],
+    languageOptions: {
+      globals: globals.mocha,
+      parser: tseslint.parser,
+      parserOptions: {
+        sourceType: 'module'
+      }
+    },
+    name: 'zcli/tests'
+  },
+  globalIgnores([
+    'node_modules',
+    'packages/**/node_modules'
+  ])
+])

.eslintrc

@@ -12,17 +12,15 @@
     "@oclif/test": "=2.1.0",
     "@types/chai": "^4",
     "@types/express": "^4.17.3",
+    "@types/glob": "^8.1.0",
     "@types/mocha": "^9.1.1",
     "@types/node": "^14.0.14",
-    "@types/glob": "^8.1.0",
-    "@typescript-eslint/eslint-plugin": "^5.30.0",
-    "@typescript-eslint/parser": "^5.30.0",
     "chai": "^4",
-    "eslint": "^8.18.0",
-    "eslint-config-standard": "^17.0.0",
-    "eslint-plugin-import": "2",
-    "eslint-plugin-node": "^11.1.0",
-    "eslint-plugin-promise": "^6.0.0",
+    "eslint": "^9.36.0",
+    "eslint-config-standard": "^17.1.0",
+    "eslint-plugin-import": "^2.32.0",
+    "eslint-plugin-n": "^17.23.1",
+    "eslint-plugin-promise": "^7.2.1",
     "form-data": "^4.0.0",
     "lerna": "^5.6.2",
     "lerna-changelog": "^2.2.0",
@@ -32,6 +30,7 @@
     "standard": "^17.0.0",
     "ts-node": "^10.9.1",
     "typescript": "~4.7.4",
+    "typescript-eslint": "^8.44.1",
     "yarn-audit-fix": "^10.1.1"
   },
   "engines": {
@@ -49,7 +48,7 @@
     "dev": "ts-node ./packages/zcli/bin/run",
     "git:check": "./scripts/git_check.sh",
     "link:bin": "bash ./scripts/link_dev.sh",
-    "lint": "eslint . --ext .ts --config .eslintrc",
+    "lint": "eslint",
     "test": "nyc --extension .ts mocha --config=.mocharc.json --forbid-only packages/**/src/**/*.test.ts",
     "test:functional": "mocha --config=.mocharc.json -r ts-node/register packages/**/tests/**/*.test.ts",
     "changelog": "lerna-changelog",