diff --git a/package.json b/package.json
index 2cef9a53..fe64178b 100644
--- a/package.json
+++ b/package.json
@@ -47,19 +47,19 @@
     "ml-xsadd": "^3.0.1"
   },
   "devDependencies": {
-    "@types/node": "^25.5.2",
-    "@vitest/coverage-v8": "^4.1.3",
+    "@types/node": "^25.9.3",
+    "@vitest/coverage-v8": "^4.1.9",
     "@zakodium/tsconfig": "^1.0.5",
     "cheminfo-build": "^1.3.2",
     "eslint": "^9.39.2",
-    "eslint-config-cheminfo-typescript": "^21.2.0",
+    "eslint-config-cheminfo-typescript": "^22.1.0",
     "jest-matcher-deep-close-to": "^3.0.2",
-    "ml-spectra-fitting": "^5.0.1",
-    "prettier": "^3.8.1",
+    "ml-spectra-fitting": "^6.1.0",
+    "prettier": "^3.8.4",
     "rimraf": "^6.1.3",
-    "spectrum-generator": "^8.1.1",
-    "typescript": "^5.9.3",
-    "vitest": "^4.1.3"
+    "spectrum-generator": "^8.2.1",
+    "typescript": "^6.0.3",
+    "vitest": "^4.1.9"
   },
   "repository": {
     "type": "git",
diff --git a/src/x/xMassCenterVectorSimilarity.ts b/src/x/xMassCenterVectorSimilarity.ts
index aa7cd954..12fafa41 100644
--- a/src/x/xMassCenterVectorSimilarity.ts
+++ b/src/x/xMassCenterVectorSimilarity.ts
@@ -52,14 +52,14 @@ export function xMassCenterVectorSimilarity(
       const value2 = array2[index];
       similarity += similarityFct(value1, value2) * maxSimilarity;
       if (recenter) {
-        shiftSubTree(array1, depth, level, slot, value2 - value1);
+        shiftSubtree(array1, depth, level, slot, value2 - value1);
       }
     }
   }
   return similarity;
 }
 
-function shiftSubTree(
+function shiftSubtree(
   array: NumberArray,
   depth: number,
   level: number,
diff --git a/src/x/xWhittakerSmoother.ts b/src/x/xWhittakerSmoother.ts
index 7adfd9d3..48f144d3 100644
--- a/src/x/xWhittakerSmoother.ts
+++ b/src/x/xWhittakerSmoother.ts
@@ -159,9 +159,8 @@ function getWeightsAndControlPoints(
   y: NumberArray,
   options: WeightsAndControlPoints = {},
 ): { weights: NumberArray; controlPoints?: NumberArray } {
-  const { length } = y;
   const { controlPoints } = options;
-  const { weights = Float64Array.from({ length }).fill(1) } = options;
+  const { weights = Float64Array.from({ length: y.length }).fill(1) } = options;
 
   if (controlPoints && controlPoints.length !== y.length) {
     throw new RangeError('controlPoints should match the length with X');
diff --git a/tsconfig.build.json b/tsconfig.build.json
index 42975081..952feb38 100644
--- a/tsconfig.build.json
+++ b/tsconfig.build.json
@@ -1,5 +1,8 @@
 {
   "extends": "./tsconfig.json",
   "include": ["src"],
-  "exclude": ["**/__tests__", "**/*.test.*"]
+  "exclude": ["**/__tests__", "**/*.test.*"],
+  "compilerOptions": {
+    "rootDir": "./src"
+  }
 }