chore: validate timezone

README.md

@@ -18,8 +18,9 @@ This is a lightweight and timezone-aware date utility package built on top of th
 - Get the current time in any timezone. (e.g., Asia/Kolkata)
 - Calculate the time difference (in hours) between two timezones.
 - Supports for both JavaScript and TypeScript developer.
+- Mental Health Time Manager, allowing users to set their work preferences.
 
-There are many more features available in the package.
+There are many more features available in the package. [Jump to docs](#documentation).
 
 ## Download/install
 

docs/home.md

@@ -15,6 +15,7 @@ This is a lightweight and timezone-aware date utility package built on top of th
 - Get the current time in any timezone. (e.g., Asia/Kolkata)
 - Calculate the time difference (in hours) between two timezones.
 - Supports for both JavaScript and TypeScript developer.
+- Mental Health Time Manager, allowing users to set their work preferences.
 
 ## Why world-clockify?
 

src/function.ts

@@ -271,6 +271,11 @@ export const sheduleWorkAndBreaks = (preference: UserPreferences) => {
 
   const workSession = [];
   const breakTime = [];
+  if (!IANAZone.isValidZone(preferredTimeZone)) {
+    throw Error(
+      `Invalid timezone: "${preferredTimeZone}". Please provide a valid IANA timezone (e.g., 'America/New_York').`,
+    );
+  }
 
   let currentTime = DateTime.fromFormat(workStartTime, 'HH:mm', { zone: preferredTimeZone });
   const endOfWorkDay = DateTime.fromFormat(workEndTime, 'HH:mm', { zone: preferredTimeZone });