chore(config): update own eslint config, prepare for typescript

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 .turbo
+dist

package.json

@@ -14,7 +14,7 @@
     "turbo": "latest"
   },
   "engines": {
-    "node": ">=16.0.0"
+    "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
   },
   "packageManager": "[email protected]"
 }

packages/backend/eslint.config.js

@@ -0,0 +1,30 @@
+import eslint from '@eslint/js';
+import eslintPlugin from 'eslint-plugin-eslint-plugin';
+import nodePlugin from 'eslint-plugin-n';
+import prettierPluginRecommended from "eslint-plugin-prettier/recommended";
+import globals from "globals";
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+  eslint.configs.recommended,
+  tseslint.configs.recommended,
+  nodePlugin.configs["flat/recommended"],
+  eslintPlugin.configs['flat/recommended'],
+  {
+    languageOptions: {
+      globals: {
+        ...globals.nodeBuiltin,
+        ...globals.es2023
+      }
+    }
+  },
+  {
+    files: ['tests/**/*.js'],
+    languageOptions: {
+      globals: {
+        ...globals.mocha
+      }
+    }
+  },
+  prettierPluginRecommended
+);

packages/backend/package.json

@@ -14,10 +14,13 @@
     "kuzzle"
   ],
   "author": "The Kuzzle Team",
+  "type": "module",
   "main": "lib/index.js",
   "scripts": {
-    "lint": "eslint lib",
-    "test": "mocha tests --recursive"
+    "lint": "eslint",
+    "test": "mocha tests --recursive",
+    "clean": "rimraf dist",
+    "build": "npm run clean && tsc --build"
   },
   "peerDependencies": {
     "eslint": "^9.10.0",
@@ -33,13 +36,15 @@
     "@eslint/js": "^9.16.0",
     "eslint-plugin-jest": "^28.9.0",
     "eslint-plugin-prettier": "^5.2.1",
+    "globals": "^15.13.0",
     "prettier": "^3.4.2",
     "typescript-eslint": "^8.17.0"
   },
   "devDependencies": {
     "eslint-plugin-eslint-plugin": "^6.3.2",
     "eslint-plugin-n": "^17.14.0",
     "mocha": "^11.0.1",
+    "rimraf": "^6.0.1",
     "typescript": "~5.7.0"
   },
   "license": "Apache-2.0",
@@ -49,6 +54,6 @@
     "package.json"
   ],
   "engines": {
-    "node": ">=16.0.0"
+    "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
   }
 }

packages/backend/tsconfig.json

@@ -0,0 +1,28 @@
+{
+  "$schema": "https://json.schemastore.org/tsconfig",
+  "compilerOptions": {
+    "lib": ["es2023"],
+    "module": "node16",
+    "target": "es2022",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "moduleResolution": "node16",
+    "allowUnusedLabels": false,
+    "allowUnreachableCode": false,
+    "exactOptionalPropertyTypes": true,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitOverride": true,
+    "noImplicitReturns": true,
+    "noPropertyAccessFromIndexSignature": true,
+    "noUncheckedIndexedAccess": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "isolatedModules": true,
+    "checkJs": true,
+    "outDir": "./dist",
+    "sourceMap": true,
+    "baseUrl": "./lib"
+  },
+  "include": ["./lib"]
+}