feat: add isArray function

packages/spacecat-shared-utils/src/functions.js

@@ -14,6 +14,16 @@
 const REGEX_ISO_DATE = /\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}.\d{3}Z/;
 const REGEX_TIME_OFFSET_DATE = /\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}.\d{3}(Z|[+-]\d{2}:\d{2})/;
 
+/**
+ * Determines if the given parameter is an array.
+ *
+ * @param {*} value - The value to check.
+ * @returns {boolean} True if the parameter is an array, false otherwise.
+ */
+function isArray(value) {
+  return Array.isArray(value);
+}
+
 /**
  * Determines case-insensitively if the given value is a boolean or a string
  * representation of a boolean.
@@ -53,7 +63,7 @@ function isNumber(value) {
  * @returns {boolean} True if the parameter is an object, false otherwise.
  */
 function isObject(value) {
-  return !Array.isArray(value) && value !== null && typeof value === 'object';
+  return !isArray(value) && value !== null && typeof value === 'object';
 }
 
 /**
@@ -150,14 +160,15 @@ function toBoolean(value) {
  * @param {Array} b - The second array to compare.
  * @returns {boolean} True if the arrays are equal, false otherwise.
  */
-const arrayEquals = (a, b) => Array.isArray(a)
-  && Array.isArray(b)
+const arrayEquals = (a, b) => isArray(a)
+  && isArray(b)
   && a.length === b.length
   && a.every((val, index) => val === b[index]);
 
 export {
   arrayEquals,
   hasText,
+  isArray,
   isBoolean,
   isInteger,
   isValidDate,

packages/spacecat-shared-utils/src/index.js

@@ -13,6 +13,7 @@
 export {
   arrayEquals,
   hasText,
+  isArray,
   isBoolean,
   isInteger,
   isValidDate,

packages/spacecat-shared-utils/test/functions.test.js

@@ -18,6 +18,7 @@ import { expect } from 'chai';
 import {
   hasText,
   isBoolean,
+  isArray,
   isInteger,
   isValidDate,
   isIsoDate,
@@ -81,6 +82,24 @@ describe('Shared functions', () => {
       expect(hasText('a12dsamklda')).to.be.true;
     });
 
+    it('is array', () => {
+      const invalidArrays = [
+        true,
+        {},
+        { asd: 'dsa' },
+        '',
+        'dasd',
+        NaN,
+        Infinity,
+        -Infinity,
+        123,
+      ];
+
+      invalidArrays.forEach((value) => expect(isArray(value)).to.be.false);
+      expect(isArray([])).to.be.true;
+      expect(isArray(['abc'])).to.be.true;
+    });
+
     it('is boolean', () => {
       const invalidBooleans = [
         null,

packages/spacecat-shared-utils/test/index.test.js

@@ -19,6 +19,7 @@ describe('Index Exports', () => {
   const expectedExports = [
     'arrayEquals',
     'hasText',
+    'isArray',
     'isBoolean',
     'isInteger',
     'isValidDate',