8 files changed, 145 insertions, 13 deletions
diff --git a/src/core/utils/address.js b/src/core/utils/address.js
index c545d34b..b20feba3 100644
--- a/src/core/utils/address.js
+++ b/src/core/utils/address.js
@@ -1,28 +1,53 @@
+/**
+ * Gets the address data from local storage.
+ *
+ * @returns {object} - Returns the address data as an object, or an empty object if not found.
+ */
 const getAddress = () => {
-  if (typeof window !== 'undefined') {
+  if (typeof window !== 'undefined' && window.localStorage) {
     const address = localStorage.getItem('address')
     if (address) return JSON.parse(address)
   }
   return {}
 }
 
+/**
+ * Sets the address data to local storage.
+ *
+ * @param {object} address - The address data to be stored as an object.
+ * @returns {boolean} - Returns `true` if the address data is successfully stored, `false` otherwise.
+ */
 const setAddress = (address) => {
-  if (typeof window !== 'undefined') {
+  if (typeof window !== 'undefined' && window.localStorage) {
     localStorage.setItem('address', JSON.stringify(address))
+    return true
   }
-  return
+  return false
 }
 
+/**
+ * Gets the value of a specific key from the address data.
+ *
+ * @param {string} key - The key of the address data to be retrieved.
+ * @returns {*} - The value of the specified key, or false if the key does not exist.
+ */
 const getItemAddress = (key) => {
   let address = getAddress()
-  return address[key]
+  return address[key] || false
 }
 
+/**
+ * Updates the value of a specific key in the address data.
+ *
+ * @param {string} key - The key of the address data to be updated.
+ * @param {*} value - The new value to be set for the specified key.
+ * @returns {boolean} - Returns `true`
+ */
 const updateItemAddress = (key, value) => {
   let address = getAddress()
   address[key] = value
   setAddress(address)
-  return
+  return true
 }
 
 export { getItemAddress, updateItemAddress }
diff --git a/src/core/utils/auth.js b/src/core/utils/auth.js
index 13e0e79d..cddff2b8 100644
--- a/src/core/utils/auth.js
+++ b/src/core/utils/auth.js
@@ -1,18 +1,32 @@
 import { deleteCookie, getCookie, setCookie } from 'cookies-next'
 
+/**
+ * Retrieves authentication data from cookie and returns it as an object.
+ *
+ * @returns {Object|boolean} - Returns the authentication data as an object if available in cookie, otherwise `false`.
+ */
 const getAuth = () => {
   let auth = getCookie('auth')
-  if (auth) {
-    return JSON.parse(auth)
-  }
+  if (auth) return JSON.parse(auth)
   return false
 }
 
+/**
+ * Sets the authentication data in cookie with the given user data.
+ *
+ * @param {Object} user - The user data to be set as authentication data in cookie.
+ * @returns {boolean} - Returns `true`.
+ */
 const setAuth = (user) => {
   setCookie('auth', JSON.stringify(user))
   return true
 }
 
+/**
+ * Deletes the authentication data stored in cookie.
+ *
+ * @returns {boolean} - Returns `true`.
+ */
 const deleteAuth = () => {
   deleteCookie('auth')
   return true
diff --git a/src/core/utils/cart.js b/src/core/utils/cart.js
index fd42ee4e..2bdffb1c 100644
--- a/src/core/utils/cart.js
+++ b/src/core/utils/cart.js
@@ -1,23 +1,51 @@
+/**
+ * Retrieves cart data from localStorage, if available.
+ *
+ * @returns {Object} - The cart data as an object, or an empty object if not found.
+ */
 const getCart = () => {
-  if (typeof window !== 'undefined') {
+  if (typeof window !== 'undefined' && window.localStorage) {
     const cart = localStorage.getItem('cart')
     if (cart) return JSON.parse(cart)
   }
   return {}
 }
 
+/**
+ * Saves cart data to localStorage, if available.
+ *
+ * @param {Object} cart - The cart data to be saved.
+ * @returns {boolean} - Returns `true` if cart data is saved successfully, `false` otherwise.
+ */
 const setCart = (cart) => {
-  if (typeof window !== 'undefined') {
+  if (typeof window !== 'undefined' && window.localStorage) {
     localStorage.setItem('cart', JSON.stringify(cart))
+    return true
   }
-  return true
+  return false
 }
 
+/**
+ * Retrieves an item from the cart data based on the given product ID.
+ *
+ * @param {Object} options - The options object containing the productId.
+ * @param {string} options.productId - The ID of the product to be retrieved from the cart.
+ * @returns {Object} - Returns the item object from the cart data, or `undefined` if not found.
+ */
 const getItemCart = ({ productId }) => {
   let cart = getCart()
   return cart[productId]
 }
 
+/**
+ * Updates an item in the cart data with the given productId, quantity, and selected status.
+ *
+ * @param {Object} options - The options object containing the productId, quantity, and selected status.
+ * @param {string} options.productId - The ID of the product to be updated in the cart.
+ * @param {number} options.quantity - The new quantity of the product in the cart.
+ * @param {boolean} [options.selected=false] - The new selected status of the product in the cart. Default is `false`.
+ * @returns {boolean} - Returns `true`.
+ */
 const updateItemCart = ({ productId, quantity, selected = false }) => {
   let cart = getCart()
   quantity = parseInt(quantity)
@@ -26,6 +54,13 @@ const updateItemCart = ({ productId, quantity, selected = false }) => {
   return true
 }
 
+/**
+ * Deletes an item from the cart data with the given productId.
+ *
+ * @param {Object} options - The options object containing the productId.
+ * @param {string} options.productId - The ID of the product to be deleted from the cart.
+ * @returns {boolean} - Returns `true`.
+ */
 const deleteItemCart = ({ productId }) => {
   let cart = getCart()
   delete cart[productId]
diff --git a/src/core/utils/currencyFormat.js b/src/core/utils/currencyFormat.js
index 12b68111..d0eba4c4 100644
--- a/src/core/utils/currencyFormat.js
+++ b/src/core/utils/currencyFormat.js
@@ -1,3 +1,9 @@
+/**
+ * Formats a numeric value as a currency string in Indonesian Rupiah (IDR) format.
+ *
+ * @param {number} value - The numeric value to be formatted as currency.
+ * @returns {string} - The currency string in IDR format.
+ */
 const currencyFormat = (value) => {
   const currency = new Intl.NumberFormat('id-ID', {
     style: 'currency',
diff --git a/src/core/utils/getFileBase64.js b/src/core/utils/getFileBase64.js
index 4fa7316b..ed6ae000 100644
--- a/src/core/utils/getFileBase64.js
+++ b/src/core/utils/getFileBase64.js
@@ -1,5 +1,13 @@
-const getFileBase64 = (file) =>
-  new Promise((resolve, reject) => {
+/**
+ * Converts a File object to base64 string using FileReader.
+ *
+ * @param {File} file - The File object to be converted.
+ * @returns {Promise<string>} - A Promise that resolves with the base64 string
+ * representing the contents of the File, or rejects with an error if there's
+ * any issue with the file reading process.
+ */
+const getFileBase64 = (file) => {
+  return new Promise((resolve, reject) => {
     let reader = new FileReader()
     reader.readAsBinaryString(file)
     reader.onload = () => {
@@ -8,5 +16,6 @@ const getFileBase64 = (file) =>
     }
     reader.onerror = (error) => reject(error)
   })
+}
 
 export default getFileBase64
diff --git a/src/core/utils/greeting.js b/src/core/utils/greeting.js
index aaaade7a..d349033e 100644
--- a/src/core/utils/greeting.js
+++ b/src/core/utils/greeting.js
@@ -1,3 +1,13 @@
+/**
+ * Generates a greeting based on the current time of day.
+ * The greeting is determined by the hour of the day:
+ * - "Selamat Pagi" for hours before 11:00
+ * - "Selamat Siang" for hours between 11:00 and 15:00
+ * - "Selamat Sore" for hours between 15:00 and 18:00
+ * - "Selamat Malam" for hours after 18:00
+ *
+ * @returns {string} - The generated greeting message.
+ */
 const greeting = () => {
   let hours = new Date().getHours()
   if (hours < 11) return 'Selamat Pagi'
diff --git a/src/core/utils/slug.js b/src/core/utils/slug.js
index 7010008a..d5eecd3e 100644
--- a/src/core/utils/slug.js
+++ b/src/core/utils/slug.js
@@ -1,5 +1,14 @@
 import toTitleCase from './toTitleCase'
 
+/**
+ * Creates a slug from input parameters by converting the name and appending it with an ID.
+ * The slug is generated by removing special characters, converting to lowercase, and joining with hyphens.
+ *
+ * @param {string} prefix - The prefix to be added to the generated slug.
+ * @param {string} name - The name used to generate the slug.
+ * @param {number} id - The ID to be appended to the slug.
+ * @returns {string} - The generated slug with the prefix, name, and ID.
+ */
 const createSlug = (prefix, name, id) => {
   let slug =
     name
@@ -13,11 +22,26 @@ const createSlug = (prefix, name, id) => {
   return prefix + filterSlugFromEmptyChar.join('-')
 }
 
+/**
+ * Extracts the ID from a slug.
+ * The ID is retrieved from the last segment of the slug, separated by hyphens.
+ *
+ * @param {string} slug - The slug from which to extract the ID.
+ * @returns {string} - The extracted ID from the slug.
+ */
 const getIdFromSlug = (slug) => {
   let id = slug.split('-')
   return id[id.length - 1]
 }
 
+/**
+ * Extracts the name from a slug.
+ * The name is retrieved from all segments of the slug, except for the last one, separated by hyphens.
+ * The retrieved name is then converted to title case.
+ *
+ * @param {string} slug - The slug from which to extract the name.
+ * @returns {string} - The extracted name from the slug in title case.
+ */
 const getNameFromSlug = (slug) => {
   let name = slug.split('-')
   name.pop()
diff --git a/src/core/utils/toTitleCase.js b/src/core/utils/toTitleCase.js
index 4335824d..dab1dc33 100644
--- a/src/core/utils/toTitleCase.js
+++ b/src/core/utils/toTitleCase.js
@@ -1,3 +1,12 @@
+/**
+ * Converts a string to title case.
+ * Title case capitalizes the first character of each word in the string,
+ * and sets the remaining characters to lowercase.
+ *
+ * @param {string} str - The input string to be converted to title case.
+ * @returns {string} - The string in title case.
+ */
+
 const toTitleCase = (str) => {
   return str.replace(/\w\S*/g, function (txt) {
     return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase()