use scality guidelines as linting rules

ISSUE: CLDSRVCLT-2

Author: SylvainSenechal

.eslintrc.js

@@ -0,0 +1,38 @@
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+import tseslint from 'typescript-eslint';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default tseslint.config(
+    {
+        ignores: [
+            '**/build/**',
+            '**/dist/**',
+            '**/node_modules/**',
+            '*.js',
+            '**/coverage/**',
+        ],
+    },
+    ...compat.extends('@scality/scality'),
+    ...tseslint.configs.recommended,
+    {
+        rules: {
+            '@typescript-eslint/no-explicit-any': 'warn',
+            '@typescript-eslint/no-unused-vars': ['error', { 
+                argsIgnorePattern: '^_',
+                varsIgnorePattern: '^_',
+                caughtErrorsIgnorePattern: '^_'
+            }],
+            '@typescript-eslint/ban-ts-comment': 'off',
+        }
+    }
+);

eslint.config.mjs

@@ -6,7 +6,7 @@
   },
   "description": "Smithy-generated TypeScript client for Cloudserver's internal APIs",
   "main": "dist/index.js",
-  "types": "dist/index.d.ts", 
+  "types": "dist/index.d.ts",
   "files": [
     "dist",
     "build/smithy/source/typescript-codegen"
@@ -27,22 +27,25 @@
     "test:raft": "jest tests/testRaftApis.test.ts",
     "test:mongo-backend": "yarn test:indexes && yarn test:error-handling && yarn test:multiple-backend",
     "test:metadata-backend": "yarn test:api && yarn test:lifecycle && yarn test:metadata && yarn test:raft",
-    "lint": "eslint . --ext .ts,.tsx",
+    "lint": "eslint src tests",
     "typecheck": "tsc --noEmit"
   },
   "devDependencies": {
-    "typescript": "^5.7.3",
+    "@eslint/compat": "^2.0.0",
+    "@scality/eslint-config-scality": "scality/Guidelines#8.3.0",
     "@types/jest": "^30.0.0",
+    "@typescript-eslint/eslint-plugin": "^6.21.0",
+    "@typescript-eslint/parser": "^6.21.0",
+    "eslint": "^9.37.0",
     "jest": "^30.2.0",
     "ts-jest": "^29.4.4",
-    "eslint": "^8.57.0",
-    "@typescript-eslint/eslint-plugin": "^6.21.0",
-    "@typescript-eslint/parser": "^6.21.0"
+    "typescript": "^5.7.3",
+    "typescript-eslint": "^8.49.0"
   },
   "dependencies": {
-    "fast-xml-parser": "^4.3.2",
     "@aws-sdk/client-s3": "^3.896.0",
-    "JSONStream": "^1.3.5"
+    "JSONStream": "^1.3.5",
+    "fast-xml-parser": "^4.3.2"
   },
   "author": "Scality",
   "license": "Apache-2.0",