diff --git a/.eslintrc.yml b/.eslintrc.yml
deleted file mode 100644
index ff9f6e0..0000000
--- a/.eslintrc.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-extends: cheminfo-typescript
-parserOptions:
-  sourceType: module
diff --git a/eslint.config.mjs b/eslint.config.mjs
new file mode 100644
index 0000000..b905e35
--- /dev/null
+++ b/eslint.config.mjs
@@ -0,0 +1,14 @@
+import cheminfo from 'eslint-config-cheminfo-typescript';
+import globals from 'globals';
+
+export default [
+  ...cheminfo,
+  {
+    languageOptions: {
+      globals: {
+        ...globals.node,
+      },
+    },
+    rules: {}
+  }
+]
\ No newline at end of file
diff --git a/package.json b/package.json
index fdd09e8..31f554a 100644
--- a/package.json
+++ b/package.json
@@ -36,18 +36,18 @@
   },
   "homepage": "https://github.com/mljs/tree-similarity#readme",
   "devDependencies": {
-    "@babel/plugin-transform-modules-commonjs": "^7.23.3",
-    "@babel/preset-typescript": "^7.23.3",
-    "@vitest/coverage-v8": "^1.2.2",
-    "eslint": "^8.56.0",
-    "eslint-config-cheminfo-typescript": "^12.2.0",
-    "prettier": "^3.2.5",
-    "rimraf": "^5.0.5",
-    "typescript": "^5.3.3",
-    "vitest": "^1.2.2"
+    "@babel/plugin-transform-modules-commonjs": "^7.25.7",
+    "@babel/preset-typescript": "^7.25.7",
+    "@vitest/coverage-v8": "^2.1.3",
+    "eslint": "^9.12.0",
+    "eslint-config-cheminfo-typescript": "^16.0.0",
+    "prettier": "^3.3.3",
+    "rimraf": "^6.0.1",
+    "typescript": "^5.6.3",
+    "vitest": "^2.1.3"
   },
   "dependencies": {
     "binary-search": "^1.3.6",
-    "cheminfo-types": "^1.7.2"
+    "cheminfo-types": "^1.8.0"
   }
 }
diff --git a/src/compressTree.ts b/src/compressTree.ts
index 115a7ba..41937e5 100644
--- a/src/compressTree.ts
+++ b/src/compressTree.ts
@@ -2,6 +2,9 @@ import { Tree } from './createTree';
 
 /**
  * Destructive compression in which we reduce the number of decimals
+ * @param tree
+ * @param options
+ * @param options.fixed
  */
 export function compressTree(
   tree: Tree,
diff --git a/src/createTree.ts b/src/createTree.ts
index 8a5fe2c..da10865 100644
--- a/src/createTree.ts
+++ b/src/createTree.ts
@@ -37,6 +37,8 @@ export interface CreateTreeOptions {
 
 /**
  * Function that creates the tree
+ * @param dataXY
+ * @param options
  */
 
 export function createTree(
@@ -48,7 +50,7 @@ export function createTree(
     minWindow = 0.16,
     threshold = 0.01,
     from = x[0],
-    to = x[x.length - 1],
+    to = x.at(-1) as number,
   } = options;
 
   return mainCreateTree(x, y, from, to, minWindow, threshold);
@@ -72,7 +74,7 @@ function mainCreateTree(x, y, from, to, minWindow, threshold) {
     if (x[i] >= to) {
       break;
     }
-    sum += y[i];
+    sum += y[i] as number;
     center += x[i] * y[i];
   }
 
diff --git a/src/treeSimilarity.ts b/src/treeSimilarity.ts
index 547ed2c..c898193 100644
--- a/src/treeSimilarity.ts
+++ b/src/treeSimilarity.ts
@@ -8,7 +8,10 @@ export interface TreeSimilarityOptions {
 
 /**
  * Similarity between two nodes
- * @return similarity measure between tree nodes
+ * @param treeA
+ * @param treeB
+ * @param options
+ * @returns similarity measure between tree nodes
  */
 export function treeSimilarity(
   treeA: Tree | null,
diff --git a/tsconfig.json b/tsconfig.json
index 7eed2d9..2c9cf1b 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -7,8 +7,8 @@
     "outDir": "lib",
     "sourceMap": true,
     "strict": true,
-    "target": "es2020",
-    "noImplicitAny": false,
+    "target": "es2022",
+    "noImplicitAny": false
   },
   "include": ["./src/**/*"]
-}
\ No newline at end of file
+}