Arabic badly typed

[AmmarHaddadi]

What were you trying to do?

To write a text in arabic (RTL language).

How did you attempt to do it?

import { PDFDocument, StandardFonts, rgb } from 'pdf-lib'
import fontkit from '@pdf-lib/fontkit'

const pdfDoc = await PDFDocument.create()

//font
pdfDoc.registerFontkit(fontkit)
const font = Bun.file(import.meta.dir + "/NotoKufiArabic-Regular.ttf")
const customFont = await pdfDoc.embedFont(await font.arrayBuffer())

// const pages = pdfDoc.getPages()
const page = pdfDoc.addPage()

const text = "اللغة العربية"
const fontSize = 22;
const textWidth = customFont.widthOfTextAtSize(text, fontSize)
const textHeight = customFont.heightAtSize(fontSize)
const { width, height } = page.getSize();
page.drawText(text, {
	x: 300,
	y: height - 7 * fontSize,
	size: fontSize,
	color: rgb(0, 0.53, 0.71),
	font: customFont,
})

const final = await pdfDoc.save()
await Bun.write("t.pdf", final)

What actually happened?

Letters are detached/spaced out too much, the dots are in wrong places

it should look like this

font used:
https://fonts.google.com/noto/specimen/Noto+Kufi+Arabic?script=Arab

What did you expect to happen?

Arabic text should be readable

How can we reproduce the issue?

import { PDFDocument, StandardFonts, rgb } from 'pdf-lib'
import fontkit from '@pdf-lib/fontkit'

const pdfDoc = await PDFDocument.create()

//font
pdfDoc.registerFontkit(fontkit)
const font = Bun.file(import.meta.dir + "/NotoKufiArabic-Regular.ttf")
const customFont = await pdfDoc.embedFont(await font.arrayBuffer())

[t.pdf](https://github.com/user-attachments/files/19170944/t.pdf)

const page = pdfDoc.addPage()

const text = "اللغة العربية"
const fontSize = 22;
const textWidth = customFont.widthOfTextAtSize(text, fontSize)
const textHeight = customFont.heightAtSize(fontSize)
const { width, height } = page.getSize();
page.drawText(text, {
	x: 300,
	y: height - 7 * fontSize,
	size: fontSize,
	color: rgb(0, 0.53, 0.71),
	font: customFont,
})

const final = await pdfDoc.save()
await Bun.write("t.pdf", final)

Link to font (can't upload here): https://fonts.google.com/noto/specimen/Noto+Kufi+Arabic?script=Arab

Version

1.17.1

What environment are you running pdf-lib in?

Other

Checklist

• My report includes a Short, Self Contained, Correct (Compilable) Example.
• I have attached all PDFs, images, and other files needed to run my SSCCE.

Additional Notes

I use bunjs