Added assertions utility for error handling and validation

index.js

@@ -12,6 +12,7 @@ const outputUtils = require('./src/helper/outputUtils.js');
 const logger = require('./src/helper/logger.js');
 const validation = require('./src/helper/validationUtils.js');
 const configUtils = require('./src/helper/configUtils.js');
+const assertions = require('./src/helper/assertionUtils.js')
 
 // Domain-specific modules
 const { MeasurementContainer } = require('./src/measurements/index.js');
@@ -34,6 +35,7 @@ module.exports = {
     configUtils,
     logger,
     validation,
+    assertions,
     MeasurementContainer,
     nrmse,
     state,

src/helper/assertionUtils.js

@@ -0,0 +1,29 @@
+/**
+ * @file assertionUtils.js
+ * 
+ * Utility functions for assertions and throwing errors in EVOLV.
+ * 
+ * @description This module provides functions to assert conditions and throw errors when those conditions are not met.
+ * @exports ValidationUtils
+ */
+
+class Assertions {
+    /**
+    * Assert that no NaN values are present in an array.
+    * @param {Array} arr - The array to check for NaN values.
+    * @param {string} label - Array label to indicate where the error occurs.
+    */
+    assertNoNaN(arr, label = "array") {
+        if (Array.isArray(arr)) {
+            for (const el of arr) {
+                assertNoNaN(el, label);
+            }
+        } else {
+            if (Number.isNaN(arr)) {
+                throw new Error(`NaN detected in ${label}!`);
+            }
+        }
+    }
+}
+
+module.exports = Assertions;