banglaToDigit()

Converts strings containing Bangla digits (০-৯) into Latin numbers or strings.

Signature

banglaToDigit<Force extends boolean = true>(bnDigit: string, forceNumber?: Force): BnDigitResult<Force>

Parameters

• bnDigit (string): A string containing Bangla digits (০-৯).
• forceNumber (boolean):
  • true (default): Returns a number. Non-digit characters are stripped.
  • false: Returns a string. Non-digit characters are preserved.

Return Value

• When forceNumber = true: number (or 0 / NaN if no valid digits exist).
• When forceNumber = false: string with converted digits.

Behavior Matrix

Input Condition	forceNumber = true (Default)	forceNumber = false
Contains only Bangla digits	Returns converted number (e.g. 123)	Returns converted string (e.g. "123")
Contains mixed characters	Returns number (digits extracted)	Returns string (digits converted, text kept)
Empty string ("")	Returns NaN	Returns empty string ("")
No digits in string	Returns 0 or NaN	Returns original string

Code Examples

import { banglaToDigit } from 'bn-calendar/utils';

// 1. Default Behavior (forceNumber = true)
console.log(banglaToDigit('১২৩'));        // 123 (number)
console.log(banglaToDigit('৪৫৬৭'));      // 4567 (number)
console.log(banglaToDigit('১২৩abc'));     // 123 (non-digits stripped)
console.log(banglaToDigit('abc'));        // 0 (no digits)
console.log(banglaToDigit(''));           // NaN

// 2. Preserving Text (forceNumber = false)
console.log(banglaToDigit('১২৩', false));        // "123"
console.log(banglaToDigit('১২৩abc', false));     // "123abc"
console.log(banglaToDigit('৪৫৬৭', false));       // "4567"
console.log(banglaToDigit('abc', false));        // "abc"
console.log(banglaToDigit('', false));           // ""

// 3. Real-world strings
console.log(banglaToDigit('আমার বয়স ২৫ বছর'));        // 25
console.log(banglaToDigit('ফোন: ০১৭১২৩৪৫৬৭৮', false)); // "ফোন: 01712345678"

Type Definitions

type BanglaDigit = '০' | '১' | '২' | '৩' | '৪' | '৫' | '৬' | '৭' | '৮' | '৯';

type BnDigitResult<Force extends boolean> = Force extends true ? number : string;