Arabicfmt Mcp

io.github.cc1a2bPublished by GitHub account cc1a2bv0.1.1Updated Oct 24, 2026

Arabic formatting: 22 Arab currencies (Saudi riyal U+20C1), Hijri dates, تفقيط, RTL/bidi fixes.

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Server details

Identifier: io.github.cc1a2b/arabicfmt-mcp
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 16, 2026

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Overview

AI-generated overview

A local MCP server exposing the arabicfmt library so an assistant can format Arab currencies, Hijri dates, Arabic number words, tafqit and RTL text.

What you can do: Format money in the 22 Arab League currencies, including symbols, precision, ranges and typed parts for new Unicode signs, plus tafqit spelling for cheques and invoices. Convert numbers to Arabic words, ordinals, fractions, durations, file sizes and relative times, and parse Arabic-digit strings back to numbers. Produce Hijri dates with deterministic Umm al-Qura tables. Clean up Arabic text: plurals, collation, slugs, search normalization and RTL/bidi isolation. Validate IBANs and Saudi national IDs.
When to use it: Useful when an assistant drafts Arabic invoices, cheques, contracts, price lists or localized interfaces and needs correct currency symbols, decimal precision, Hijri dates or spelled-out amounts. Also handy for fixing mixed-direction text and Arabic search or slug handling.
Requirements: Runs as a local process over stdio, installed from the npm package arabicfmt-mcp; Node.js 18 or later is required. No authentication, environment variables or headers are declared.

Before you install

Formatting and validation are read-only computations, but amounts, dates and identifiers passed to the tools are processed by the local server. Verify generated tafqit wording and currency precision before using it on real cheques or legal documents.

Installation

In SourceWeft

Open Arabicfmt Mcp in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

arabicfmt

Arabic-first formatting for JavaScript & TypeScript

Currency symbols · Hijri/Islamic calendar · number-to-words · تفقيط · 6 plural forms · RTL/bidi —
correct for all 22 Arab League countries, with zero dependencies and full TypeScript types.

أرقامٌ وعملاتٌ وتواريخُ هجريةٌ ولغةٌ عربيةٌ سليمة — في سطرٍ واحد.

[npm version] [downloads] [jsDelivr hits] [gzipped size] [zero dependencies] [types included]

[arabicfmt — interactive Arabic formatting playground]

npm · Live demo · GitHub

arabicfmt is the only JavaScript library that handles the entire Arabic formatting stack in one zero-dependency package — currency symbols, number precision, Hijri/Islamic calendar dates, RTL bidirectional text, Arabic number-to-words and تفقيط — with full TypeScript types. Works in Node, the browser, Deno, Bun and React Native.

New in 0.1.5: every currency sign from the Unicode 17.0/18.0 transition — SAR U+20C1, MVR U+20C2, AED U+20C3, OMR U+20C4 — plus the tooling to actually render them: typed parts, a generated @font-face, price ranges and a date-aware transition registry.

What other libraries get wrong

Problem	Other libraries	arabicfmt
Saudi riyal U+20C1	Emits ﷼ (U+FDFC) — the Iranian rial	Correct U+20C1 with a safe text fallback
The Unicode 18.0 signs (MVR/AED/OMR)	Unencoded, or still the old abbreviation	All four signs, plus `transitionStatus()` and a generated `@font-face`
Styling a new sign	Regex the symbol back out of a formatted string	`formatCurrencyToParts()` — the sign is its own typed part
Iraqi dinar (IQD) decimals	0 (CLDR practical)	3 decimals — ISO 4217 legal standard
Hijri date output	Varies between Node, Chrome, Safari, Hermes	Frozen Umm al-Qura tables — identical on every engine
Arabic plurals	1–2 forms; Arabic legally needs 6	Full CLDR 6-form system (zero/one/two/few/many/other)
Number to Arabic words	No zero-dep solution	`arabicToWords(1234)` → "ألف ومئتان وأربعة وثلاثون"
Spell money for cheques (تفقيط)	Build it yourself, get the grammar wrong	`spellCurrency(1234.5, {currency:"SAR"})` → "ألف ومئتان وأربعة وثلاثون ريالاً وخمسون هللةً"
Ordinals (ترتيبية)	Missing or gender-blind	`arabicOrdinal(25)` → "الخامس والعشرون", gender-aware
Spoken durations	`Intl.DurationFormat` barely supported	`formatDuration(7_500_000)` → "ساعتان وخمس دقائق" with full agreement
RTL broken sentences	Phone numbers flip mid-sentence	Unicode isolates wrap LTR runs automatically
Eastern Arabic digit parsing	`parseInt("١٢٣")` → NaN	`parseNumber("١٬٢٣٤٫٥٦")` → 1234.56
Arabic URL slugs	Strip to empty or mojibake	`slugify("مدينة جدة")` → "mdynh-jdh"
IBAN / Saudi ID checks	Regex that accepts bad numbers	Real ISO 7064 mod-97 + Luhn checksums

Install

Requirements: Node.js ≥ 18 · TypeScript ≥ 4.7 (optional) · zero runtime dependencies.

Browser / CDN — no build step

Every release is mirrored on the jsDelivr and unpkg CDNs automatically. Import the browser-ready ESM bundle straight from a URL — no install, no bundler:

html

<script type="module">  import { formatCurrency, formatHijri } from "https://cdn.jsdelivr.net/npm/arabicfmt/+esm";
  console.log(formatCurrency(1234.5, { currency: "SAR", numerals: "arab" })); // ١٬٢٣٤٫٥٠ ر.س  console.log(formatHijri(new Date(), { numerals: "arab" }));                 // ٢٧ ذو الحجة ١٤٤٧ هـ</script>

<script type="module">  import { formatCurrency, formatHijri } from "https://cdn.jsdelivr.net/npm/arabicfmt/+esm";
  console.log(formatCurrency(1234.5, { currency: "SAR", numerals: "arab" })); // ١٬٢٣٤٫٥٠ ر.س  console.log(formatHijri(new Date(), { numerals: "arab" }));                 // ٢٧ ذو الحجة ١٤٤٧ هـ</script>

Subpaths work too — e.g. https://cdn.jsdelivr.net/npm/arabicfmt/dist/currency/index.js for just the currency module. Pin a version for production, e.g. [email protected].

Quick start

import {  formatCurrency,      // correct symbol + precision for every Arab currency  formatCurrencyRange, // "1,000.00 – 5,000.00 ر.س"  formatCurrencyToParts, // typed parts — font-scope just the new Unicode sign  transitionStatus,    // "none" | "announced" | "encoded" for any date  signFontFaceCSS,     // the scoped @font-face the new signs need  formatCompact,       // 1,200,000 → "1.2M" / "١٫٢ مليون"  arabicToWords,       // 1234 → "ألف ومئتان وأربعة وثلاثون"  spellCurrency,       // تفقيط: 1234.5 SAR → "...ريالاً وخمسون هللةً"  arabicOrdinal,       // 25 → "الخامس والعشرون"  formatDuration,      // 7_500_000ms → "ساعتان وخمس دقائق"  formatFileSize,      // 1536 → "1.5 كيلوبايت"  formatRelativeTime,  // "منذ ٣ أيام"  formatList,          // ["أحمد","علي"] → "أحمد وعلي"  parseCurrency,       // "١٬٢٣٤٫٥٠ ر.س" → 1234.5  arabicPlural,        // full 6-form Arabic plural selection  sortArabic,          // Arabic-locale collation  slugify,             // "مدينة جدة" → "mdynh-jdh" (URL slugs)  isValidIBAN,         // ISO 7064 mod-97 IBAN checksum  isValidSaudiId,      // Saudi national ID / Iqama check digit  isolateForeign,      // fix broken RTL sentences  normalizeForSearch,  // search-key normalization  detectLocale,        // auto-detect from browser / Node environment} from "arabicfmt";
import { formatHijri, toHijri } from "arabicfmt/umalqura"; // deterministic Hijri calendar
// CurrencyformatCurrency(1.2,   { currency: "KWD" });                      // "1.200 د.ك"formatCurrency(1234,  { locale: "ar-SA", numerals: "arab" });    // "١٬٢٣٤٫٠٠ ر.س"formatCurrency(-500,  { currency: "SAR", accounting: true });    // "(500.00 ر.س)"formatCurrencyRange(1000, 5000, { currency: "SAR" });            // "1,000.00 – 5,000.00 ر.س"formatCompact(1_500_000, { locale: "ar", numerals: "arab" });    // "١٫٥ مليون"
// The Unicode currency-sign transition, as datatransitionStatus("AED");                          // "encoded" (Unicode 18.0)transitionStatus("AED", new Date("2026-01-01"));  // "announced"transitionStatus("KWD");                          // "none" — Kuwait has no signsignFontFaceCSS({ src: "/fonts/signs.woff2" });   // @font-face … unicode-range: U+20C1…U+20C4
// Number to Arabic wordsarabicToWords(1234);                     // "ألف ومئتان وأربعة وثلاثون"arabicToWords(1_000_000);               // "مليون"arabicToWords(5, { gender: "female" }); // "خمس"
// Spell money for invoices & cheques (التفقيط)spellCurrency(1234.5, { currency: "SAR" });// "ألف ومئتان وأربعة وثلاثون ريالاً وخمسون هللةً"spellCurrency(100, { currency: "SAR", suffix: true }); // "مئة ريال فقط لا غير"
// Ordinals — gender-awarearabicOrdinal(1);                        // "الأول"arabicOrdinal(25);                       // "الخامس والعشرون"arabicOrdinal(1, { gender: "female" });  // "الأولى"
// Duration & file sizeformatDuration(7_500_000);               // "ساعتان وخمس دقائق"formatFileSize(1536);                    // "1.5 كيلوبايت"
// ListsformatList(["أحمد", "محمد", "علي"]);                    // "أحمد ومحمد وعلي"formatList(["تفاح", "موز"], { type: "disjunction" });   // "تفاح أو موز"
// Hijri dates (deterministic — same output on Node, Chrome, Safari, Hermes)formatHijri(new Date("2025-09-23"));                            // "1 ربيع الآخر 1447 هـ"formatHijri(new Date("2025-09-23"), { numerals: "arab" });     // "١ ربيع الآخر ١٤٤٧ هـ"toHijri(new Date("2025-09-23"));                               // { year: 1447, month: 4, day: 1 }
// Relative timeformatRelativeTime(new Date(Date.now() - 3 * 86400_000));      // "منذ 3 أيام"
// Parse formatted strings back to numbersparseCurrency("١٬٢٣٤٫٥٠ ر.س");   // 1234.5parseCurrency("(500.00 SAR)");    // -500
// RTLisolateForeign("اتصل على +1 (555) 234-5678 الآن"); // phone stays intact in RTL
// Locale auto-detectiondetectLocale(); // "ar-SA" in a Saudi browser, "ar-EG" in Node with LANG=ar_EG

import {  formatCurrency,      // correct symbol + precision for every Arab currency  formatCurrencyRange, // "1,000.00 – 5,000.00 ر.س"  formatCurrencyToParts, // typed parts — font-scope just the new Unicode sign  transitionStatus,    // "none" | "announced" | "encoded" for any date  signFontFaceCSS,     // the scoped @font-face the new signs need  formatCompact,       // 1,200,000 → "1.2M" / "١٫٢ مليون"  arabicToWords,       // 1234 → "ألف ومئتان وأربعة وثلاثون"  spellCurrency,       // تفقيط: 1234.5 SAR → "...ريالاً وخمسون هللةً"  arabicOrdinal,       // 25 → "الخامس والعشرون"  formatDuration,      // 7_500_000ms → "ساعتان وخمس دقائق"  formatFileSize,      // 1536 → "1.5 كيلوبايت"  formatRelativeTime,  // "منذ ٣ أيام"  formatList,          // ["أحمد","علي"] → "أحمد وعلي"  parseCurrency,       // "١٬٢٣٤٫٥٠ ر.س" → 1234.5  arabicPlural,        // full 6-form Arabic plural selection  sortArabic,          // Arabic-locale collation  slugify,             // "مدينة جدة" → "mdynh-jdh" (URL slugs)  isValidIBAN,         // ISO 7064 mod-97 IBAN checksum  isValidSaudiId,      // Saudi national ID / Iqama check digit  isolateForeign,      // fix broken RTL sentences  normalizeForSearch,  // search-key normalization  detectLocale,        // auto-detect from browser / Node environment} from "arabicfmt";
import { formatHijri, toHijri } from "arabicfmt/umalqura"; // deterministic Hijri calendar
// CurrencyformatCurrency(1.2,   { currency: "KWD" });                      // "1.200 د.ك"formatCurrency(1234,  { locale: "ar-SA", numerals: "arab" });    // "١٬٢٣٤٫٠٠ ر.س"formatCurrency(-500,  { currency: "SAR", accounting: true });    // "(500.00 ر.س)"formatCurrencyRange(1000, 5000, { currency: "SAR" });            // "1,000.00 – 5,000.00 ر.س"formatCompact(1_500_000, { locale: "ar", numerals: "arab" });    // "١٫٥ مليون"
// The Unicode currency-sign transition, as datatransitionStatus("AED");                          // "encoded" (Unicode 18.0)transitionStatus("AED", new Date("2026-01-01"));  // "announced"transitionStatus("KWD");                          // "none" — Kuwait has no signsignFontFaceCSS({ src: "/fonts/signs.woff2" });   // @font-face … unicode-range: U+20C1…U+20C4
// Number to Arabic wordsarabicToWords(1234);                     // "ألف ومئتان وأربعة وثلاثون"arabicToWords(1_000_000);               // "مليون"arabicToWords(5, { gender: "female" }); // "خمس"
// Spell money for invoices & cheques (التفقيط)spellCurrency(1234.5, { currency: "SAR" });// "ألف ومئتان وأربعة وثلاثون ريالاً وخمسون هللةً"spellCurrency(100, { currency: "SAR", suffix: true }); // "مئة ريال فقط لا غير"
// Ordinals — gender-awarearabicOrdinal(1);                        // "الأول"arabicOrdinal(25);                       // "الخامس والعشرون"arabicOrdinal(1, { gender: "female" });  // "الأولى"
// Duration & file sizeformatDuration(7_500_000);               // "ساعتان وخمس دقائق"formatFileSize(1536);                    // "1.5 كيلوبايت"
// ListsformatList(["أحمد", "محمد", "علي"]);                    // "أحمد ومحمد وعلي"formatList(["تفاح", "موز"], { type: "disjunction" });   // "تفاح أو موز"
// Hijri dates (deterministic — same output on Node, Chrome, Safari, Hermes)formatHijri(new Date("2025-09-23"));                            // "1 ربيع الآخر 1447 هـ"formatHijri(new Date("2025-09-23"), { numerals: "arab" });     // "١ ربيع الآخر ١٤٤٧ هـ"toHijri(new Date("2025-09-23"));                               // { year: 1447, month: 4, day: 1 }
// Relative timeformatRelativeTime(new Date(Date.now() - 3 * 86400_000));      // "منذ 3 أيام"
// Parse formatted strings back to numbersparseCurrency("١٬٢٣٤٫٥٠ ر.س");   // 1234.5parseCurrency("(500.00 SAR)");    // -500
// RTLisolateForeign("اتصل على +1 (555) 234-5678 الآن"); // phone stays intact in RTL
// Locale auto-detectiondetectLocale(); // "ar-SA" in a Saudi browser, "ar-EG" in Node with LANG=ar_EG

Currency formatting

Symbol strategy: `symbolMode`

The Saudi riyal received its own Unicode symbol (U+20C1) in September 2025. Most libraries either emit the wrong ligature (U+FDFC, the Iranian rial) or fall back to SAR. arabicfmt gives you full control:

import { formatCurrency, resolveCurrencySymbol, getCurrencyInfo } from "arabicfmt/currency";
formatCurrency(1234.5, { currency: "SAR" });// → "1,234.50 ر.س"   (auto: safe text symbol, renders everywhere today)
formatCurrency(1234.5, { currency: "SAR", symbolMode: "new" });// → "1,234.50 ⃁"     (U+20C1 — use with a webfont; see webfont guide below)
formatCurrency(1234.5, { currency: "SAR", symbolMode: "code" });// → "1,234.50 SAR"   (ISO code — for accounting tables)

import { formatCurrency, resolveCurrencySymbol, getCurrencyInfo } from "arabicfmt/currency";
formatCurrency(1234.5, { currency: "SAR" });// → "1,234.50 ر.س"   (auto: safe text symbol, renders everywhere today)
formatCurrency(1234.5, { currency: "SAR", symbolMode: "new" });// → "1,234.50 ⃁"     (U+20C1 — use with a webfont; see webfont guide below)
formatCurrency(1234.5, { currency: "SAR", symbolMode: "code" });// → "1,234.50 SAR"   (ISO code — for accounting tables)

`symbolMode`	SAR	AED	OMR	Use when
`auto` (default)	`ر.س`	`⃃` U+20C3	`⃄` U+20C4	Default. AED/OMR use the dedicated sign; SAR stays on safe text
`new`	`⃁` U+20C1	`⃃` U+20C3	`⃄` U+20C4	Force the dedicated sign (needs font support)
`text`	`ر.س`	`د.إ`	`ر.ع.`	Always the safe text symbol — renders everywhere
`code`	`SAR`	`AED`	`OMR`	ISO code

Unicode 18.0 (16 September 2026): the AED (U+20C3), OMR (U+20C4) and MVR (U+20C2) signs are now live, and auto prefers them. Need maximum compatibility today? Use symbolMode: "text". The Saudi riyal keeps its safe text default by design. See the transition section for the full table.

Correct decimal precision — all 22 Arab League countries

Generated from CLDR 48.2.0 at build time and verified on every build:

formatCurrency(1.2, { currency: "KWD" });  // "1.200 د.ك"  ← 3 decimalsformatCurrency(1.2, { currency: "BHD" });  // "1.200 د.ب"  ← 3 decimalsformatCurrency(1.2, { currency: "IQD" });  // "1.200 ع.د"  ← 3 decimals (ISO 4217, not CLDR's 0)formatCurrency(500, { currency: "KMF" });  // "500 ف.ج.ق"  ← 0 decimalsformatCurrency(500, { currency: "SAR" });  // "500.00 ر.س" ← 2 decimals

formatCurrency(1.2, { currency: "KWD" });  // "1.200 د.ك"  ← 3 decimalsformatCurrency(1.2, { currency: "BHD" });  // "1.200 د.ب"  ← 3 decimalsformatCurrency(1.2, { currency: "IQD" });  // "1.200 ع.د"  ← 3 decimals (ISO 4217, not CLDR's 0)formatCurrency(500, { currency: "KMF" });  // "500 ف.ج.ق"  ← 0 decimalsformatCurrency(500, { currency: "SAR" });  // "500.00 ر.س" ← 2 decimals

All currency options

// Resolve from locale region — no need to know the currency codeformatCurrency(99.9,  { locale: "ar-BH" });                  // "99.900 د.ب"formatCurrency(1234,  { locale: "ar-AE", numerals: "arab", symbolMode: "text" }); // "١٬٢٣٤٫٠٠ د.إ"  (auto → U+20C3 sign)
// Accounting notation (negatives in parentheses)formatCurrency(-1234.5, { currency: "SAR", accounting: true }); // "(1,234.50 ر.س)"
// Hide/overrideformatCurrency(100, { currency: "SAR", showSymbol: false, fractionDigits: 0 }); // "100"
// Currency metadatagetCurrencyInfo("SAR");// {//   code: "SAR", digits: 2,//   symbols: { auto: "ر.س", text: "ر.س", code: "SAR", new: "⃁" },//   unicode: { codepoint: "U+20C1", unicodeVersion: "17.0", live: true, autoDefault: false },//   displayName: "ريال سعودي"// }

// Resolve from locale region — no need to know the currency codeformatCurrency(99.9,  { locale: "ar-BH" });                  // "99.900 د.ب"formatCurrency(1234,  { locale: "ar-AE", numerals: "arab", symbolMode: "text" }); // "١٬٢٣٤٫٠٠ د.إ"  (auto → U+20C3 sign)
// Accounting notation (negatives in parentheses)formatCurrency(-1234.5, { currency: "SAR", accounting: true }); // "(1,234.50 ر.س)"
// Hide/overrideformatCurrency(100, { currency: "SAR", showSymbol: false, fractionDigits: 0 }); // "100"
// Currency metadatagetCurrencyInfo("SAR");// {//   code: "SAR", digits: 2,//   symbols: { auto: "ر.س", text: "ر.س", code: "SAR", new: "⃁" },//   unicode: { codepoint: "U+20C1", unicodeVersion: "17.0", live: true, autoDefault: false },//   displayName: "ريال سعودي"// }

Price ranges

import { formatCurrencyRange } from "arabicfmt/currency";
formatCurrencyRange(1000, 5000, { currency: "SAR" })// "1,000.00 – 5,000.00 ر.س"     ← one symbol, the way ranges are actually set
formatCurrencyRange(1000, 5000, { currency: "SAR", symbolEach: true })// "1,000.00 ر.س – 5,000.00 ر.س"
formatCurrencyRange(1.2, 2, { currency: "KWD" })// "1.200 – 2.000 د.ك"           ← both ends share the currency's precision
formatCurrencyRange(1000, 5000, { currency: "SAR", numerals: "arab" })// "١٬٠٠٠٫٠٠ – ٥٬٠٠٠٫٠٠ ر.س"
formatCurrencyRange(50, 50, { currency: "AED" })   // "50.00 ⃃"  — collapsesformatCurrencyRange(500, 100, { currency: "SAR" }) // throws: reversed range

import { formatCurrencyRange } from "arabicfmt/currency";
formatCurrencyRange(1000, 5000, { currency: "SAR" })// "1,000.00 – 5,000.00 ر.س"     ← one symbol, the way ranges are actually set
formatCurrencyRange(1000, 5000, { currency: "SAR", symbolEach: true })// "1,000.00 ر.س – 5,000.00 ر.س"
formatCurrencyRange(1.2, 2, { currency: "KWD" })// "1.200 – 2.000 د.ك"           ← both ends share the currency's precision
formatCurrencyRange(1000, 5000, { currency: "SAR", numerals: "arab" })// "١٬٠٠٠٫٠٠ – ٥٬٠٠٠٫٠٠ ر.س"
formatCurrencyRange(50, 50, { currency: "AED" })   // "50.00 ⃃"  — collapsesformatCurrencyRange(500, 100, { currency: "SAR" }) // throws: reversed range

Pass rangeSeparator for anything other than the default spaced en dash ({ rangeSeparator: " إلى " }), and isolate: true to wrap the whole range when it sits inside a mixed-direction sentence.

Rendering the new signs

A brand-new sign needs two things a string cannot give you: a webfont scoped to its codepoint, and a way to wrap only the symbol in the element that uses that font. Both are one call each.

1. The parts API — the currency counterpart to Intl.NumberFormat.prototype.formatToParts:

import { formatCurrencyToParts } from "arabicfmt/currency";
formatCurrencyToParts(1234.5, { currency: "SAR", symbolMode: "new" });// [ { type: "integer",  value: "1" },//   { type: "group",    value: "," },//   { type: "integer",  value: "234" },//   { type: "decimal",  value: "." },//   { type: "fraction", value: "50" },//   { type: "literal",  value: " " },//   { type: "currency", value: "⃁", symbolMode: "new",//     codepoint: "U+20C1", needsFont: true } ]

import { formatCurrencyToParts } from "arabicfmt/currency";
formatCurrencyToParts(1234.5, { currency: "SAR", symbolMode: "new" });// [ { type: "integer",  value: "1" },//   { type: "group",    value: "," },//   { type: "integer",  value: "234" },//   { type: "decimal",  value: "." },//   { type: "fraction", value: "50" },//   { type: "literal",  value: " " },//   { type: "currency", value: "⃁", symbolMode: "new",//     codepoint: "U+20C1", needsFont: true } ]

needsFont is true exactly when the part holds a dedicated Unicode sign, so a component never has to pattern-match a finished string (which is how bidi bugs start):

tsx

<span dir="rtl">  {formatCurrencyToParts(total, { currency: "SAR", symbolMode: "new" }).map(    (part, i) =>      part.needsFont        ? <span key={i} className="riyal-sign">{part.value}</span>        : <span key={i}>{part.value}</span>,  )}</span>

<span dir="rtl">  {formatCurrencyToParts(total, { currency: "SAR", symbolMode: "new" }).map(    (part, i) =>      part.needsFont        ? <span key={i} className="riyal-sign">{part.value}</span>        : <span key={i}>{part.value}</span>,  )}</span>

Part types mirror Intl (integer, group, decimal, fraction, minusSign, plusSign, literal) plus four arabicfmt adds: currency, parenthesis (accounting), isolate (bidi controls) and rangeSeparator.

2. The @font-face rule — generated, with the unicode-range that makes it free on pages that never print a sign:

import { signFontFaceCSS } from "arabicfmt/currency";
signFontFaceCSS({ src: "/fonts/currency-signs.woff2" });// @font-face {//   font-family: "Arabicfmt Signs";//   src: url("/fonts/currency-signs.woff2") format("woff2");//   font-display: swap;//   unicode-range: U+20C1, U+20C2, U+20C3, U+20C4;// }
// Saudi riyal only, into a family name you already use:signFontFaceCSS({ src: "/fonts/riyal.woff2", family: "Riyal", currencies: ["SAR"] });// unicode-range: U+20C1;

import { signFontFaceCSS } from "arabicfmt/currency";
signFontFaceCSS({ src: "/fonts/currency-signs.woff2" });// @font-face {//   font-family: "Arabicfmt Signs";//   src: url("/fonts/currency-signs.woff2") format("woff2");//   font-display: swap;//   unicode-range: U+20C1, U+20C2, U+20C3, U+20C4;// }
// Saudi riyal only, into a family name you already use:signFontFaceCSS({ src: "/fonts/riyal.woff2", family: "Riyal", currencies: ["SAR"] });// unicode-range: U+20C1;

Because the range is scoped to those codepoints, the browser downloads the font only when one of them is actually painted — body text is untouched. Put the family first in your stack and the rest falls through:

signUnicodeRange() returns just the range string ("U+20C1, U+20C2, U+20C3, U+20C4") for CSS-in-JS. Both helpers reject anything that would break out of the rule, so a URL from config can't inject CSS.

Number formatting

import {  formatNumber, formatCompact, formatPercent,  toArabicDigits, toExtendedArabicDigits, toLatinDigits,  parseNumber, parseCurrency,  arabicToWords,  formatRelativeTime,} from "arabicfmt/number";
// StandardformatNumber(1_234_567.89, { locale: "en" });              // "1,234,567.89"formatNumber(1234.5,       { numerals: "arab" });           // "١٬٢٣٤٫٥"
// Compact / short notation — dashboards and data cardsformatCompact(1_500_000);                                   // "1.5M"formatCompact(1_500_000, { locale: "ar" });                 // "1.5 مليون"formatCompact(1_500_000, { locale: "ar", numerals: "arab" }); // "١٫٥ مليون"
// PercentformatPercent(0.853, { locale: "en" });                    // "85.3%"
// Three numeral systems: latn (default), arab, arabextformatNumber(1234.5, { numerals: "arab" });                // "١٬٢٣٤٫٥"  Eastern ArabicformatNumber(1234.5, { numerals: "arabext" });             // "۱٬۲۳۴٫۵"  Persian/Urdu
// TransliterationtoArabicDigits("Order #2026");                             // "Order #٢٠٢٦"toExtendedArabicDigits("2026");                            // "۲۰۲۶"toLatinDigits("٢٠٢٦");                                     // "2026"  (handles Persian ۰–۹ too)
// Parsing — round-trip supportparseNumber("١٬٢٣٤٫٥٦");         // 1234.56  (Eastern Arabic digits + separators)parseNumber("1,234.56");          // 1234.56  (Western)parseCurrency("١٬٢٣٤٫٥٠ ر.س");  // 1234.5parseCurrency("(500.00 SAR)");   // -500      (accounting notation)
// Relative timeformatRelativeTime(new Date(Date.now() - 3 * 86400_000));            // "منذ 3 أيام"formatRelativeTime(new Date(Date.now() + 3600_000), new Date(), { locale: "en" }); // "in 1 hour"

import {  formatNumber, formatCompact, formatPercent,  toArabicDigits, toExtendedArabicDigits, toLatinDigits,  parseNumber, parseCurrency,  arabicToWords,  formatRelativeTime,} from "arabicfmt/number";
// StandardformatNumber(1_234_567.89, { locale: "en" });              // "1,234,567.89"formatNumber(1234.5,       { numerals: "arab" });           // "١٬٢٣٤٫٥"
// Compact / short notation — dashboards and data cardsformatCompact(1_500_000);                                   // "1.5M"formatCompact(1_500_000, { locale: "ar" });                 // "1.5 مليون"formatCompact(1_500_000, { locale: "ar", numerals: "arab" }); // "١٫٥ مليون"
// PercentformatPercent(0.853, { locale: "en" });                    // "85.3%"
// Three numeral systems: latn (default), arab, arabextformatNumber(1234.5, { numerals: "arab" });                // "١٬٢٣٤٫٥"  Eastern ArabicformatNumber(1234.5, { numerals: "arabext" });             // "۱٬۲۳۴٫۵"  Persian/Urdu
// TransliterationtoArabicDigits("Order #2026");                             // "Order #٢٠٢٦"toExtendedArabicDigits("2026");                            // "۲۰۲۶"toLatinDigits("٢٠٢٦");                                     // "2026"  (handles Persian ۰–۹ too)
// Parsing — round-trip supportparseNumber("١٬٢٣٤٫٥٦");         // 1234.56  (Eastern Arabic digits + separators)parseNumber("1,234.56");          // 1234.56  (Western)parseCurrency("١٬٢٣٤٫٥٠ ر.س");  // 1234.5parseCurrency("(500.00 SAR)");   // -500      (accounting notation)
// Relative timeformatRelativeTime(new Date(Date.now() - 3 * 86400_000));            // "منذ 3 أيام"formatRelativeTime(new Date(Date.now() + 3600_000), new Date(), { locale: "en" }); // "in 1 hour"

Number to Arabic words (`arabicToWords`)

Convert integers to their Arabic word representation — handles gender agreement and all six scale levels.

import { arabicToWords } from "arabicfmt";
// BasicarabicToWords(0)       // "صفر"arabicToWords(1)       // "واحد"arabicToWords(2)       // "اثنان"arabicToWords(11)      // "أحد عشر"arabicToWords(25)      // "خمسة وعشرون"arabicToWords(100)     // "مئة"arabicToWords(350)     // "ثلاثمئة وخمسون"
// ThousandsarabicToWords(1000)    // "ألف"arabicToWords(2000)    // "ألفان"arabicToWords(5000)    // "خمسة آلاف"arabicToWords(11000)   // "أحد عشر ألفاً"arabicToWords(100000)  // "مئة ألف"
// Millions / billionsarabicToWords(1_000_000)    // "مليون"arabicToWords(2_000_000)    // "مليونان"arabicToWords(5_000_000)    // "خمسة ملايين"arabicToWords(1_000_000_000)// "مليار"
// Large compositearabicToWords(1_234_567)// "مليون ومئتان وأربعة وثلاثون ألفاً وخمسمئة وسبعة وستون"
// Gender agreement — feminine noun (ليرة، روبية…)arabicToWords(3, { gender: "female" })  // "ثلاث"arabicToWords(5, { gender: "female" })  // "خمس"
// NegativearabicToWords(-42)  // "سالب اثنان وأربعون"
// Decimals — opt in (default truncates, stays backward compatible)arabicToWords(3.14, { fraction: "digits" })  // "ثلاثة فاصلة واحد أربعة"arabicToWords(3.14, { fraction: "number" })  // "ثلاثة فاصلة أربعة عشر"
// Common fractions (denominators 2–10)import { arabicFraction } from "arabicfmt";arabicFraction(1, 2)  // "نصف"arabicFraction(3, 4)  // "ثلاثة أرباع"arabicFraction(2, 3)  // "ثلثان"

import { arabicToWords } from "arabicfmt";
// BasicarabicToWords(0)       // "صفر"arabicToWords(1)       // "واحد"arabicToWords(2)       // "اثنان"arabicToWords(11)      // "أحد عشر"arabicToWords(25)      // "خمسة وعشرون"arabicToWords(100)     // "مئة"arabicToWords(350)     // "ثلاثمئة وخمسون"
// ThousandsarabicToWords(1000)    // "ألف"arabicToWords(2000)    // "ألفان"arabicToWords(5000)    // "خمسة آلاف"arabicToWords(11000)   // "أحد عشر ألفاً"arabicToWords(100000)  // "مئة ألف"
// Millions / billionsarabicToWords(1_000_000)    // "مليون"arabicToWords(2_000_000)    // "مليونان"arabicToWords(5_000_000)    // "خمسة ملايين"arabicToWords(1_000_000_000)// "مليار"
// Large compositearabicToWords(1_234_567)// "مليون ومئتان وأربعة وثلاثون ألفاً وخمسمئة وسبعة وستون"
// Gender agreement — feminine noun (ليرة، روبية…)arabicToWords(3, { gender: "female" })  // "ثلاث"arabicToWords(5, { gender: "female" })  // "خمس"
// NegativearabicToWords(-42)  // "سالب اثنان وأربعون"
// Decimals — opt in (default truncates, stays backward compatible)arabicToWords(3.14, { fraction: "digits" })  // "ثلاثة فاصلة واحد أربعة"arabicToWords(3.14, { fraction: "number" })  // "ثلاثة فاصلة أربعة عشر"
// Common fractions (denominators 2–10)import { arabicFraction } from "arabicfmt";arabicFraction(1, 2)  // "نصف"arabicFraction(3, 4)  // "ثلاثة أرباع"arabicFraction(2, 3)  // "ثلثان"

Spell money in words — التفقيط

spellCurrency is the tafqit every Arabic invoice, cheque and contract needs: it turns a numeric amount into its full legal Arabic wording, splitting major and minor units and inflecting every noun for correct grammatical agreement (singular / dual / plural / accusative).

import { spellCurrency } from "arabicfmt";
spellCurrency(1234.5, { currency: "SAR" })// "ألف ومئتان وأربعة وثلاثون ريالاً وخمسون هللةً"
// Unit agreement is automatic (العدد والمعدود)spellCurrency(1,   { currency: "SAR" })   // "ريال واحد"      (singular)spellCurrency(2,   { currency: "SAR" })   // "ريالان"         (dual)spellCurrency(3,   { currency: "SAR" })   // "ثلاثة ريالات"   (plural, 3–10)spellCurrency(11,  { currency: "SAR" })   // "أحد عشر ريالاً" (accusative, 11–99)spellCurrency(100, { currency: "SAR" })   // "مئة ريال"       (genitive singular)
// Minor-unit precision comes from CLDR — KWD = 1000 fils, SAR = 100 halalasspellCurrency(1.5, { currency: "KWD" })   // "دينار واحد وخمسمئة فلس"spellCurrency(0.75, { currency: "SAR" })  // "خمس وسبعون هللةً"
// Cheque-ready ending and locale-derived currencyspellCurrency(100, { currency: "SAR", suffix: true }) // "مئة ريال فقط لا غير"spellCurrency(-5,  { locale: "ar-AE" })               // "سالب خمسة دراهم"

import { spellCurrency } from "arabicfmt";
spellCurrency(1234.5, { currency: "SAR" })// "ألف ومئتان وأربعة وثلاثون ريالاً وخمسون هللةً"
// Unit agreement is automatic (العدد والمعدود)spellCurrency(1,   { currency: "SAR" })   // "ريال واحد"      (singular)spellCurrency(2,   { currency: "SAR" })   // "ريالان"         (dual)spellCurrency(3,   { currency: "SAR" })   // "ثلاثة ريالات"   (plural, 3–10)spellCurrency(11,  { currency: "SAR" })   // "أحد عشر ريالاً" (accusative, 11–99)spellCurrency(100, { currency: "SAR" })   // "مئة ريال"       (genitive singular)
// Minor-unit precision comes from CLDR — KWD = 1000 fils, SAR = 100 halalasspellCurrency(1.5, { currency: "KWD" })   // "دينار واحد وخمسمئة فلس"spellCurrency(0.75, { currency: "SAR" })  // "خمس وسبعون هللةً"
// Cheque-ready ending and locale-derived currencyspellCurrency(100, { currency: "SAR", suffix: true }) // "مئة ريال فقط لا غير"spellCurrency(-5,  { locale: "ar-AE" })               // "سالب خمسة دراهم"

Full Arabic noun paradigms are bundled for all 22 Arab League currencies (SAR, AED, KWD, BHD, QAR, OMR, JOD, EGP, IQD, LYD, TND, DZD, MAD, SDG, LBP, SYP, YER, SOS, DJF, KMF, MRU). Inspect or extend them via the exported CURRENCY_WORDS table.

Ordinal numbers — الأعداد الترتيبية

import { arabicOrdinal } from "arabicfmt";
arabicOrdinal(1)    // "الأول"arabicOrdinal(2)    // "الثاني"arabicOrdinal(10)   // "العاشر"arabicOrdinal(11)   // "الحادي عشر"arabicOrdinal(25)   // "الخامس والعشرون"
// Gender agreementarabicOrdinal(1, { gender: "female" })   // "الأولى"arabicOrdinal(25, { gender: "female" })  // "الخامسة والعشرون"
// Indefinite (drop the article ال)arabicOrdinal(3, { definite: false })    // "ثالث"arabicOrdinal(25, { definite: false })   // "خامس وعشرون"

import { arabicOrdinal } from "arabicfmt";
arabicOrdinal(1)    // "الأول"arabicOrdinal(2)    // "الثاني"arabicOrdinal(10)   // "العاشر"arabicOrdinal(11)   // "الحادي عشر"arabicOrdinal(25)   // "الخامس والعشرون"
// Gender agreementarabicOrdinal(1, { gender: "female" })   // "الأولى"arabicOrdinal(25, { gender: "female" })  // "الخامسة والعشرون"
// Indefinite (drop the article ال)arabicOrdinal(3, { definite: false })    // "ثالث"arabicOrdinal(25, { definite: false })   // "خامس وعشرون"

Duration — spelled Arabic

formatDuration turns a time span into its spoken Arabic form, with correct dual/plural/accusative agreement on every unit — something Intl.DurationFormat (still barely supported) does not give you.

import { formatDuration } from "arabicfmt";
formatDuration(7_500_000)                  // "ساعتان وخمس دقائق"  (2h 5m)formatDuration(90, { input: "s" })         // "دقيقة واحدة وثلاثون ثانيةً"formatDuration(3_600_000, { largest: 1 })  // "ساعة واحدة"formatDuration(2 * 86_400_000)             // "يومان"formatDuration(500)                        // "أقل من ثانية"
// Restrict the units consideredformatDuration(125 * 60_000, { units: ["minute"], largest: 1 })// "مئة وخمس وعشرون دقيقةً"

import { formatDuration } from "arabicfmt";
formatDuration(7_500_000)                  // "ساعتان وخمس دقائق"  (2h 5m)formatDuration(90, { input: "s" })         // "دقيقة واحدة وثلاثون ثانيةً"formatDuration(3_600_000, { largest: 1 })  // "ساعة واحدة"formatDuration(2 * 86_400_000)             // "يومان"formatDuration(500)                        // "أقل من ثانية"
// Restrict the units consideredformatDuration(125 * 60_000, { units: ["minute"], largest: 1 })// "مئة وخمس وعشرون دقيقةً"

largest (default 2) caps how many units appear, biggest first. Want to drive the noun agreement yourself? countedNoun(n, forms) is exported for any custom counted noun.

File size — Arabic data units

import { formatFileSize } from "arabicfmt";
formatFileSize(0)                          // "0 بايت"formatFileSize(1536)                       // "1.5 كيلوبايت"formatFileSize(5 * 1024 * 1024)            // "5 ميجابايت"formatFileSize(1_500_000, { base: 1000 })  // "1.5 ميجابايت"  (decimal/SI)formatFileSize(2048, { numerals: "arab" }) // "٢ كيلوبايت"formatFileSize(2048, { unitStyle: "latin" })// "2 KB"

import { formatFileSize } from "arabicfmt";
formatFileSize(0)                          // "0 بايت"formatFileSize(1536)                       // "1.5 كيلوبايت"formatFileSize(5 * 1024 * 1024)            // "5 ميجابايت"formatFileSize(1_500_000, { base: 1000 })  // "1.5 ميجابايت"  (decimal/SI)formatFileSize(2048, { numerals: "arab" }) // "٢ كيلوبايت"formatFileSize(2048, { unitStyle: "latin" })// "2 KB"

Units scale through بايت · كيلوبايت · ميجابايت · جيجابايت · تيرابايت · بيتابايت, with base: 1024 (binary, default) or base: 1000 (decimal).

Arabic plural rules (6 forms)

Arabic has six plural forms — more than any other major language. Standard i18n libraries handle 1–2 forms and break for Arabic.

import { arabicPluralForm, arabicPlural } from "arabicfmt";
// Get the CLDR form namearabicPluralForm(0)    // "zero"arabicPluralForm(1)    // "one"arabicPluralForm(2)    // "two"arabicPluralForm(5)    // "few"   (3–10)arabicPluralForm(15)   // "many"  (11–99)arabicPluralForm(100)  // "other"
// Select the right stringconst forms = {  zero:  "لا كتب",  one:   "كتاب واحد",  two:   "كتابان",  few:   "كتب",       // 3–10  many:  "كتاباً",    // 11–99  other: "كتاب",};
arabicPlural(0,   forms)  // "لا كتب"arabicPlural(1,   forms)  // "كتاب واحد"arabicPlural(2,   forms)  // "كتابان"arabicPlural(5,   forms)  // "كتب"arabicPlural(25,  forms)  // "كتاباً"arabicPlural(100, forms)  // "كتاب"

import { arabicPluralForm, arabicPlural } from "arabicfmt";
// Get the CLDR form namearabicPluralForm(0)    // "zero"arabicPluralForm(1)    // "one"arabicPluralForm(2)    // "two"arabicPluralForm(5)    // "few"   (3–10)arabicPluralForm(15)   // "many"  (11–99)arabicPluralForm(100)  // "other"
// Select the right stringconst forms = {  zero:  "لا كتب",  one:   "كتاب واحد",  two:   "كتابان",  few:   "كتب",       // 3–10  many:  "كتاباً",    // 11–99  other: "كتاب",};
arabicPlural(0,   forms)  // "لا كتب"arabicPlural(1,   forms)  // "كتاب واحد"arabicPlural(2,   forms)  // "كتابان"arabicPlural(5,   forms)  // "كتب"arabicPlural(25,  forms)  // "كتاباً"arabicPlural(100, forms)  // "كتاب"

Hijri / Islamic calendar dates

Two engines with an identical API:

	`arabicfmt/date`	`arabicfmt/umalqura`
Algorithm	Tabular arithmetic	Official Umm al-Qura tables
Accuracy	±1–2 days	Exact
Bundle	Tiny (no tables)	Larger (frozen ICU tables)
Range	Any year	AH 1300–1599
Deterministic	Yes	Yes — same on Node/Chrome/Safari/Hermes

import { toHijri, fromHijri, formatHijri, umalquraToGregorian } from "arabicfmt/umalqura";
// ConverttoHijri(new Date("2025-09-23"))        // { year: 1447, month: 4, day: 1 }umalquraToGregorian(1447, 9, 1)        // JavaScript Date — first day of Ramadan 1447
// Format — ArabicformatHijri(new Date("2025-09-23"))// "1 ربيع الآخر 1447 هـ"
formatHijri(new Date("2025-09-23"), { numerals: "arab" })// "١ ربيع الآخر ١٤٤٧ هـ"
// Format — EnglishformatHijri(new Date("2025-09-23"), { locale: "en" })// "1 Rabi al-Thani 1447 AH"
// Format — ISO-style numericformatHijri(new Date("2025-09-23"), {  locale: "en", month: "2-digit", day: "2-digit", order: "ymd", era: false,})// "1447/04/01"

import { toHijri, fromHijri, formatHijri, umalquraToGregorian } from "arabicfmt/umalqura";
// ConverttoHijri(new Date("2025-09-23"))        // { year: 1447, month: 4, day: 1 }umalquraToGregorian(1447, 9, 1)        // JavaScript Date — first day of Ramadan 1447
// Format — ArabicformatHijri(new Date("2025-09-23"))// "1 ربيع الآخر 1447 هـ"
formatHijri(new Date("2025-09-23"), { numerals: "arab" })// "١ ربيع الآخر ١٤٤٧ هـ"
// Format — EnglishformatHijri(new Date("2025-09-23"), { locale: "en" })// "1 Rabi al-Thani 1447 AH"
// Format — ISO-style numericformatHijri(new Date("2025-09-23"), {  locale: "en", month: "2-digit", day: "2-digit", order: "ymd", era: false,})// "1447/04/01"

Month and weekday name tables

import {  HIJRI_MONTHS_AR,     // Arabic Hijri month names  HIJRI_MONTHS_EN,     // English Hijri month names  GREGORIAN_MONTHS_AR, // Arabic Gregorian month names (يناير، فبراير…)  GREGORIAN_MONTHS_EN,  ARABIC_WEEKDAYS_AR,  // Arabic weekday names (الأحد، الاثنين…)  ARABIC_WEEKDAYS_EN,} from "arabicfmt/date";
HIJRI_MONTHS_AR[8]        // "رمضان"  (index 0 = Muharram)GREGORIAN_MONTHS_AR[0]    // "يناير"  (index 0 = January)ARABIC_WEEKDAYS_AR[5]     // "الجمعة" (index 0 = Sunday)

import {  HIJRI_MONTHS_AR,     // Arabic Hijri month names  HIJRI_MONTHS_EN,     // English Hijri month names  GREGORIAN_MONTHS_AR, // Arabic Gregorian month names (يناير، فبراير…)  GREGORIAN_MONTHS_EN,  ARABIC_WEEKDAYS_AR,  // Arabic weekday names (الأحد، الاثنين…)  ARABIC_WEEKDAYS_EN,} from "arabicfmt/date";
HIJRI_MONTHS_AR[8]        // "رمضان"  (index 0 = Muharram)GREGORIAN_MONTHS_AR[0]    // "يناير"  (index 0 = January)ARABIC_WEEKDAYS_AR[5]     // "الجمعة" (index 0 = Sunday)

Bidirectional (RTL) text helpers

Stop phone numbers and English words from scrambling Arabic sentences:

import { detectDirection, isolate, isolateForeign, stripBidi } from "arabicfmt/bidi";
// Before fix: "+1 (555) 234-5678" flips the area code in RTL context// After fix:  the phone number is wrapped in Unicode isolates — sentence intactisolateForeign("اتصل على +1 (555) 234-5678 الآن");
detectDirection("مرحبا");   // "rtl"detectDirection("Hello");   // "ltr"
isolate("9:41 AM");         // FSI … PDI isolate around a mixed runstripBidi(dirtyStr);        // remove every Unicode bidi control character

import { detectDirection, isolate, isolateForeign, stripBidi } from "arabicfmt/bidi";
// Before fix: "+1 (555) 234-5678" flips the area code in RTL context// After fix:  the phone number is wrapped in Unicode isolates — sentence intactisolateForeign("اتصل على +1 (555) 234-5678 الآن");
detectDirection("مرحبا");   // "rtl"detectDirection("Hello");   // "ltr"
isolate("9:41 AM");         // FSI … PDI isolate around a mixed runstripBidi(dirtyStr);        // remove every Unicode bidi control character

Text normalization for Arabic search

Match Arabic text despite diacritics, alef variants, hamza and taa marbuta differences:

import {  stripTashkeel,  normalizeArabic,  normalizeForSearch,  sortArabic,  compareArabic,} from "arabicfmt/text";
stripTashkeel("مُحَمَّد")        // "محمد"normalizeArabic("الأحمد")        // "الاحمد"  (alef variants unified)
// Robust search — these two strings produce the same key:normalizeForSearch("مُؤسَّسة") === normalizeForSearch("موسسه")  // true
// Arabic-locale collationsortArabic(["ياسر", "أحمد", "بسام"])   // ["أحمد", "بسام", "ياسر"]["ج", "أ", "ب"].sort(compareArabic)    // ["أ", "ب", "ج"]

import {  stripTashkeel,  normalizeArabic,  normalizeForSearch,  sortArabic,  compareArabic,} from "arabicfmt/text";
stripTashkeel("مُحَمَّد")        // "محمد"normalizeArabic("الأحمد")        // "الاحمد"  (alef variants unified)
// Robust search — these two strings produce the same key:normalizeForSearch("مُؤسَّسة") === normalizeForSearch("موسسه")  // true
// Arabic-locale collationsortArabic(["ياسر", "أحمد", "بسام"])   // ["أحمد", "بسام", "ياسر"]["ج", "أ", "ب"].sort(compareArabic)    // ["أ", "ب", "ج"]

List formatting

Join values into a grammatical Arabic list. Wraps Intl.ListFormat and degrades gracefully on runtimes without it.

import { formatList } from "arabicfmt";
formatList(["أحمد", "محمد", "علي"])                      // "أحمد ومحمد وعلي"formatList(["تفاح", "موز", "برتقال"], { type: "disjunction" }) // "تفاح أو موز أو برتقال"formatList([1, 2, 3], { numerals: "arab" })              // "١ و٢ و٣"

import { formatList } from "arabicfmt";
formatList(["أحمد", "محمد", "علي"])                      // "أحمد ومحمد وعلي"formatList(["تفاح", "موز", "برتقال"], { type: "disjunction" }) // "تفاح أو موز أو برتقال"formatList([1, 2, 3], { numerals: "arab" })              // "١ و٢ و٣"

Transliteration & URL slugs

Romanize Arabic script to readable Latin, or turn it into URL-safe slugs for routes, filenames and CMS permalinks. Deterministic — short vowels appear only when the text is vowelled (carries tashkeel).

import { transliterate, slugify } from "arabicfmt";
transliterate("مُحَمَّد")    // "muhammad"   (vowelled)transliterate("محمد")        // "mhmd"       (bare → consonant-only)transliterate("الرياض")      // "alryad"transliterate("غرفة ٢٠١")    // "ghrfh 201"  (digits converted)
slugify("مدينة جدة")                      // "mdynh-jdh"slugify("الرياض 2026")                    // "alryad-2026"slugify("Hello العالم", { separator: "_" }) // "hello_alalm"slugify("Hello World", { lowercase: false }) // "Hello-World"

import { transliterate, slugify } from "arabicfmt";
transliterate("مُحَمَّد")    // "muhammad"   (vowelled)transliterate("محمد")        // "mhmd"       (bare → consonant-only)transliterate("الرياض")      // "alryad"transliterate("غرفة ٢٠١")    // "ghrfh 201"  (digits converted)
slugify("مدينة جدة")                      // "mdynh-jdh"slugify("الرياض 2026")                    // "alryad-2026"slugify("Hello العالم", { separator: "_" }) // "hello_alalm"slugify("Hello World", { lowercase: false }) // "Hello-World"

Note: this is a pragmatic, reversible-ish romanization, not a strict academic transliteration (DIN 31635 / ISO 233). It is built for slugs, search keys and readable IDs.

Validation — IBAN & Saudi ID

Real checksums, not regex guesses. isValidIBAN runs the ISO 7064 mod-97 algorithm with SWIFT-registry length checks; isValidSaudiId runs the Luhn check digit and classifies citizen vs. resident.

import { isValidIBAN, formatIBAN, isValidSaudiId, saudiIdType } from "arabicfmt";
isValidIBAN("SA03 8000 0000 6080 1016 7519")  // trueisValidIBAN("SA03 8000 0000 6080 1016 7510")  // false (bad checksum)formatIBAN("SA0380000000608010167519")        // "SA03 8000 0000 6080 1016 7519"
isValidSaudiId("1012345672")                  // truesaudiIdType("1012345672")                     // "citizen"saudiIdType("2100000005")                     // "resident"  (Iqama)

import { isValidIBAN, formatIBAN, isValidSaudiId, saudiIdType } from "arabicfmt";
isValidIBAN("SA03 8000 0000 6080 1016 7519")  // trueisValidIBAN("SA03 8000 0000 6080 1016 7510")  // false (bad checksum)formatIBAN("SA0380000000608010167519")        // "SA03 8000 0000 6080 1016 7519"
isValidSaudiId("1012345672")                  // truesaudiIdType("1012345672")                     // "citizen"saudiIdType("2100000005")                     // "resident"  (Iqama)

Registry lengths are enforced for SA, AE, KW, BH, QA, JO, LB, EG, IQ, PS, TN, MR, LY (plus common partners). Unknown-country IBANs are validated by checksum and the general 15–34 length bound, never accepted on structure alone.

Framework usage

React / Next.js

tsx

import { formatCurrency, detectLocale } from "arabicfmt";import { formatHijri } from "arabicfmt/umalqura";
export function PriceTag({ amount, currency }: { amount: number; currency: string }) {  const locale = detectLocale();  return (    <span dir="rtl">      {formatCurrency(amount, { currency, locale })}    </span>  );}
export function HijriDate({ date }: { date: Date }) {  return <time>{formatHijri(date, { numerals: "arab" })}</time>;}

import { formatCurrency, detectLocale } from "arabicfmt";import { formatHijri } from "arabicfmt/umalqura";
export function PriceTag({ amount, currency }: { amount: number; currency: string }) {  const locale = detectLocale();  return (    <span dir="rtl">      {formatCurrency(amount, { currency, locale })}    </span>  );}
export function HijriDate({ date }: { date: Date }) {  return <time>{formatHijri(date, { numerals: "arab" })}</time>;}

Vue 3

import { formatCurrency } from "arabicfmt";
// composableexport function useArabicCurrency(currency: string) {  return (amount: number) =>    formatCurrency(amount, { currency, numerals: "arab" });}

import { formatCurrency } from "arabicfmt";
// composableexport function useArabicCurrency(currency: string) {  return (amount: number) =>    formatCurrency(amount, { currency, numerals: "arab" });}

Node.js / Express

import { formatCurrency, detectLocale } from "arabicfmt";import { formatHijri } from "arabicfmt/umalqura";
app.get("/invoice/:id", (req, res) => {  const locale = req.headers["accept-language"]?.split(",")[0] ?? "ar-SA";  const total  = formatCurrency(order.total, { locale });  const date   = formatHijri(order.date, { locale: "ar" });  res.json({ total, date });});

import { formatCurrency, detectLocale } from "arabicfmt";import { formatHijri } from "arabicfmt/umalqura";
app.get("/invoice/:id", (req, res) => {  const locale = req.headers["accept-language"]?.split(",")[0] ?? "ar-SA";  const total  = formatCurrency(order.total, { locale });  const date   = formatHijri(order.date, { locale: "ar" });  res.json({ total, date });});

Locale auto-detection

import { detectLocale } from "arabicfmt";
// Browser: reads navigator.language// Node.js: reads LANG / LANGUAGE / LC_ALL / LC_MESSAGES env vars// Fallback: "ar"
const locale = detectLocale(); // "ar-SA", "ar-EG", "en-US", …formatCurrency(1234, { locale });

import { detectLocale } from "arabicfmt";
// Browser: reads navigator.language// Node.js: reads LANG / LANGUAGE / LC_ALL / LC_MESSAGES env vars// Fallback: "ar"
const locale = detectLocale(); // "ar-SA", "ar-EG", "en-US", …formatCurrency(1234, { locale });

Subpath imports — tree-shakeable

Pick only what you need for the smallest possible bundle:

import { formatCurrency, spellCurrency } from "arabicfmt/currency";import { formatNumber, arabicToWords, formatDuration, formatFileSize } from "arabicfmt/number";import { formatHijri, toHijri }  from "arabicfmt/date";       // tabular core (tiny)import { formatHijri, toHijri }  from "arabicfmt/umalqura";   // accurate, opt-inimport { isolateForeign }        from "arabicfmt/bidi";import { normalizeForSearch, arabicPlural, slugify } from "arabicfmt/text";import { isValidIBAN, isValidSaudiId }      from "arabicfmt/validate";

import { formatCurrency, spellCurrency } from "arabicfmt/currency";import { formatNumber, arabicToWords, formatDuration, formatFileSize } from "arabicfmt/number";import { formatHijri, toHijri }  from "arabicfmt/date";       // tabular core (tiny)import { formatHijri, toHijri }  from "arabicfmt/umalqura";   // accurate, opt-inimport { isolateForeign }        from "arabicfmt/bidi";import { normalizeForSearch, arabicPlural, slugify } from "arabicfmt/text";import { isValidIBAN, isValidSaudiId }      from "arabicfmt/validate";

Measured cost of each entry point (esbuild --bundle --minify, gzipped — v0.1.5):

Import	What you get	min + gzip
`arabicfmt`	everything below	13.2 kB
`arabicfmt/currency`	22 currencies, تفقيط, parts, ranges, transition registry	7.6 kB
`arabicfmt/number`	words, ordinals, fractions, parse, duration, …	3.6 kB
`arabicfmt/umalqura`	300 years of official Umm al-Qura tables	2.4 kB
`arabicfmt/text`	normalize, plurals, collation, lists, slugs	1.7 kB
`arabicfmt/date`	tabular Hijri core	1.6 kB
`arabicfmt/bidi`	direction detection + isolates	0.8 kB
`arabicfmt/validate`	IBAN + Saudi ID checksums	0.7 kB

The complete Arabic formatting stack costs less than a single small image.

Full API reference

Every public function, by module. Full signatures and options are in the sections above and in the bundled TypeScript types.

Module	Functions
`arabicfmt/currency`	`formatCurrency` · `formatCurrencyToParts` · `formatCurrencyRange` · `spellCurrency` · `getCurrencyInfo` · `resolveCurrencySymbol` · `transitionStatus` · `getCurrencyTransition` · `listCurrencyTransitions` · `signFontFaceCSS` · `signUnicodeRange`
`arabicfmt/number`	`formatNumber` · `formatPercent` · `formatCompact` · `parseNumber` · `parseCurrency` · `toArabicDigits` · `toExtendedArabicDigits` · `toLatinDigits` · `shapeDigits` · `arabicToWords` · `arabicOrdinal` · `arabicFraction` · `countedNoun` · `formatDuration` · `formatFileSize` · `formatRelativeTime`
`arabicfmt/umalqura`	`formatHijri` · `toHijri` · `fromHijri` · `gregorianToUmalqura` · `umalquraToGregorian`
`arabicfmt/date`	`formatHijri` · `toHijri` · `fromHijri` (tabular core)
`arabicfmt/text`	`stripTashkeel` · `removeTatweel` · `normalizeArabic` · `normalizeForSearch` · `arabicPlural` · `arabicPluralForm` · `sortArabic` · `compareArabic` · `createArabicCollator` · `formatList` · `transliterate` · `slugify`
`arabicfmt/bidi`	`isolateForeign` · `isolate` · `wrapLTR` · `wrapRTL` · `stripBidi` · `detectDirection` · `isRTL` · `charDirection`
`arabicfmt/validate`	`isValidIBAN` · `formatIBAN` · `normalizeIBAN` · `isValidSaudiId` · `saudiIdType`
`arabicfmt` (root)	re-exports everything above + `detectLocale`

MCP server — use arabicfmt from AI agents

AI agents (Claude Desktop, Claude Code, Cursor) can call arabicfmt directly through the arabicfmt-mcp Model Context Protocol server — 21 tools (format_currency, format_currency_range, currency_transition, spell_currency, format_hijri, arabic_to_words, isolate_foreign, validate_iban, …). Add it to your client's mcpServers config:

Source and full tool list: mcp/.

Examples

Runnable scripts for every feature live in examples/:

cd examples && npm installnode currency.mjs   # or numbers / words / dates / text / bidi / validate

cd examples && npm installnode currency.mjs   # or numbers / words / dates / text / bidi / validate

Engineering


Dependencies	Zero runtime dependencies
Size	~13.2 kB min+gzip for the whole library; subpath imports from 0.7 kB
Formats	Dual ESM + CJS, full `.d.ts` / `.d.cts` types
Tree-shaking	`"sideEffects": false` — pay only for what you import
Data source	CLDR 48.2.0 + ICU — verified at build time, not hand-typed
Test coverage	242 tests — currency transition, parts, ranges, precision, Hijri, plurals, words, tafqit, durations, IBAN/ID
Platforms	Node ≥ 18, all evergreen browsers, React Native / Hermes, Deno, Bun
Published with	npm provenance (GitHub Actions attestation)

Unicode currency-sign transition

Complete as of Unicode 18.0 — released 16 September 2026

Four currencies moved from an ad-hoc abbreviation to a dedicated Unicode sign in this cycle, and arabicfmt carries all four. Note what is not on this list: Kuwait has never issued a dinar sign — KWD is still د.ك / KD, and transitionStatus("KWD") returns "none".

Currency	Sign	Codepoint	Unicode	Announced	`auto` default
Saudi riyal (SAR)	`⃁`	U+20C1	17.0 (9 Sep 2025)	SAMA, 20 Feb 2025	text `ر.س` (conservative)
Maldivian rufiyaa (MVR)	`⃂`	U+20C2	18.0 (16 Sep 2026)	MMA, 3 Jul 2022	sign
UAE dirham (AED)	`⃃`	U+20C3	18.0 (16 Sep 2026)	CBUAE, 27 Mar 2025	sign
Omani rial (OMR)	`⃄`	U+20C4	18.0 (16 Sep 2026)	CBO, 19 Nov 2025	sign

The rufiyaa is not an Arab League currency, but it was encoded in the same batch and sits between the dirham and rial in the Currency Symbols block — carrying it keeps the range contiguous, so one unicode-range covers the whole transition.

Because system-font coverage for brand-new signs still varies, symbolMode: "text" always returns the safe abbreviation, and the Saudi riyal keeps the text symbol as its auto default by design.

The transition as data

Encoding is not rendering. A sign exists in the standard months or years before system fonts draw it, and every product shipping in that window has to decide what to print. That timeline is queryable:

import {  transitionStatus,  listCurrencyTransitions,  getCurrencyTransition,} from "arabicfmt/currency";
transitionStatus("SAR")                          // "encoded"transitionStatus("SAR", new Date("2025-03-01"))  // "announced" — SAMA had it, Unicode didn'ttransitionStatus("AED", new Date("2026-01-01"))  // "announced"transitionStatus("KWD")                          // "none" — no sign exists
listCurrencyTransitions({ unicodeVersion: "18.0" }).map((t) => t.code);// ["MVR", "AED", "OMR"]
getCurrencyTransition("OMR");// {//   code: "OMR", sign: "⃄", codepoint: "U+20C4", name: "OMANI RIAL SIGN",//   unicodeVersion: "18.0", unicodeReleased: "2026-09-16",//   announced: "2025-11-19", authority: "Central Bank of Oman (CBO)",//   autoDefault: true, textSymbol: "ر.ع.",// }

import {  transitionStatus,  listCurrencyTransitions,  getCurrencyTransition,} from "arabicfmt/currency";
transitionStatus("SAR")                          // "encoded"transitionStatus("SAR", new Date("2025-03-01"))  // "announced" — SAMA had it, Unicode didn'ttransitionStatus("AED", new Date("2026-01-01"))  // "announced"transitionStatus("KWD")                          // "none" — no sign exists
listCurrencyTransitions({ unicodeVersion: "18.0" }).map((t) => t.code);// ["MVR", "AED", "OMR"]
getCurrencyTransition("OMR");// {//   code: "OMR", sign: "⃄", codepoint: "U+20C4", name: "OMANI RIAL SIGN",//   unicodeVersion: "18.0", unicodeReleased: "2026-09-16",//   announced: "2025-11-19", authority: "Central Bank of Oman (CBO)",//   autoDefault: true, textSymbol: "ر.ع.",// }

transitionStatus takes a moment in time, so a historical invoice can be re-rendered with the symbol that was correct on its own date.

Live demo

arabicfmt.vercel.app — the whole library, interactive and computed live in your browser. Change any input and watch the Arabic update in real time: currency studio, تفقيط, Hijri converter, plurals, RTL fixes and more.

[arabicfmt interactive playground]

Run it locally:

Contributing

Issues and pull requests are welcome on GitHub.

License

MIT — free for commercial and personal use.

Author & more projects

Built and maintained by cc1a2b.

If arabicfmt saves you time, please star it on GitHub — it helps other Arabic developers find it. Explore my other open-source projects, or open an issue with ideas, bugs and feature requests.

_{Built for Arabic-first software}

Source: README.md at commit 946ad4a

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v0.1.1LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 days25 pts
Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.
Auth declared10 pts
Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.
Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
License10 pts

Decimals	Currencies
3	KWD, BHD, OMR, JOD, IQD, LYD, TND
0	DJF, KMF
2	SAR, AED, QAR, and the rest