# NepaliPatroJS ๐ณ๐ต๐
A JavaScript/TypeScript library for Nepali date conversion and calendar utilities.
[](https://www.npmjs.com/package/nepalipatrojs)
[](https://opensource.org/licenses/MIT)
## โจ Features
- ๐ Convert dates between Bikram Sambat (BS) and Gregorian calendar (AD)
- ๐ Get current date in Nepali calendar
- ๐จ Format Nepali dates with various format options
- ๐๏ธ Support for both English and Nepali (Devanagari) language output
- ๐ Get days in a month for any year in the BS calendar
- ๐ TypeScript support with full type definitions
## ๐ฆ Installation
```bash
npm install nepalipatrojs
```
Or with yarn:
```bash
yarn add nepalipatrojs
```
## ๐ Usage
### Import (Node, Bundlers, or TypeScript)
```typescript
// ES6 import
import NepaliPatro from 'nepalipatrojs';
// CommonJS require
const NepaliPatro = require('nepalipatrojs').default;
```
---
## ๐ผ๏ธ Nepali Datepicker UI Component
The library provides a ready-to-use Nepali datepicker UI for web apps.
### Usage (Browser/UMD)
1. Include the CSS and JS in your HTML:
```html
```
2. Add an input element:
```html
```
3. Initialize the datepicker:
```js
// For UMD build, NepaliDatePicker is available globally
const input = document.getElementById('dateInput');
const dp = new NepaliDatePicker(input, {
format: 'YYYY/MM/DD', // or 'MMMM D, YYYY', etc.
theme: 'dark', // 'light' (default) or 'dark'
language: 'en', // 'en' (default) or 'np'
});
```
### Usage (ESM/TypeScript)
```typescript
import { NepaliDatePicker } from 'nepalipatrojs';
const input = document.getElementById('dateInput');
const dp = new NepaliDatePicker(input, {
format: 'YYYY/MM/DD',
theme: 'dark',
language: 'np',
});
```
#### Options
| Option | Type | Default | Description |
|----------|---------------------|-------------------|---------------------------------------------|
| format | string | 'MMMM D, YYYY' | Date format string |
| theme | 'light' \| 'dark' | 'light' | Calendar theme |
| language | 'en' \| 'np' | 'en' | Language for month/digits |
#### Theming
The datepicker supports both light and dark themes. You can customize the CSS for `.nepali-datepicker-light` and `.nepali-datepicker-dark` classes.
---
### Convert AD to BS
```typescript
// Using Date object
const adDate = new Date(2022, 0, 1); // January 1, 2022
const bsDate = NepaliPatro.convertADToBS(adDate);
console.log(bsDate);
// Output: { year: 2078, month: 9, day: 17 }
// Using array [year, month, day]
const bsDate2 = NepaliPatro.convertADToBS([2022, 1, 1]); // January 1, 2022
console.log(bsDate2);
// Output: { year: 2078, month: 9, day: 17 }
```
### Convert BS to AD
```typescript
// Using object
const bsDate = { year: 2078, month: 9, day: 17 };
const adDate = NepaliPatro.convertBSToAD(bsDate);
console.log(adDate);
// Output: Date object representing January 1, 2022
// Using array [year, month, day]
const adDate2 = NepaliPatro.convertBSToAD([2078, 9, 17]);
console.log(adDate2);
// Output: Date object representing January 1, 2022
```
### Get Current BS Date
```typescript
const today = NepaliPatro.getCurrentBSDate();
//or use
const today = NepaliPatro.now()
console.log(today);
// Output: { year: 2081, month: 1, day: 28 } (if today is May 10, 2025)
```
### Format BS Date
```typescript
const bsDate = { year: 2078, month: 1, day: 15 };
// Default format (YYYY-MM-DD)
const formatted = NepaliPatro.formatBS(bsDate);
console.log(formatted); // Output: 2078-01-15
// Custom format
const customFormatted = NepaliPatro.formatBS(bsDate, 'DD/MM/YYYY');
console.log(customFormatted); // Output: 15/01/2078
// With month name
const withMonthName = NepaliPatro.formatBS(bsDate, 'MMMM D, YYYY');
console.log(withMonthName); // Output: Baisakh 15, 2078
// In Nepali language
const inNepali = NepaliPatro.formatBS(bsDate, 'MMMM D, YYYY', { language: 'ne' });
console.log(inNepali); // Output: เคฌเฅเคถเคพเค 15, 2078
```
### Get Days in Month
```typescript
// Get total days in Jestha 2078 BS
const daysInMonth = NepaliPatro.getDaysInMonth(2078, 2);
console.log(daysInMonth); // Output: 32
```
### Convert to Nepali Digits
```typescript
// Convert numbers to Nepali digits
const nepaliNumber = NepaliPatro.toNepaliDigits(2078);
console.log(nepaliNumber); // Output: เฅจเฅฆเฅญเฅฎ
```
## ๐ API Reference
### `convertADToBS(date: Date | number[]): NepaliDate`
Converts a Gregorian date (AD) to Bikram Sambat date (BS).
### `convertBSToAD(bsDate: NepaliDate | number[]): Date`
Converts a Bikram Sambat date (BS) to Gregorian date (AD).
### `getCurrentBSDate(): NepaliDate`
Returns the current date in BS calendar.
### `formatBS(date: NepaliDate, format?: string, options?: NepaliPatroOptions): string`
Formats a BS date according to the given format string.
### `getDaysInMonth(year: number, month: number): number`
Returns the number of days in a given month and year in BS calendar.
### `toNepaliDigits(num: number | string): string`
Converts English digits to Nepali digits.
## ๐งฉ Types
```typescript
interface NepaliDate {
year: number;
month: number;
day: number;
}
interface NepaliPatroOptions {
language?: 'en' | 'ne';
format?: string;
returnType?: 'string' | 'object';
}
```
## ๐ค Format Tokens
| Token | Description | Example |
|-------|-------------|---------|
| YYYY | 4-digit year | 2078 |
| YY | 2-digit year | 78 |
| MM | 2-digit month | 01 |
| M | 1-digit month | 1 |
| MMMM | Month name | Baisakh |
| DD | 2-digit day | 02 |
| D | 1-digit day | 2 |
## ๐ Browser & Bundler Compatibility
This library works in all modern browsers, Node.js, and with bundlers like Rollup, Webpack, Vite, etc.
## ๐ค Contributing
Contributions are welcome! Feel free to open issues or submit pull requests.
## ๐ License