# Bug Report ## Description of the problem When providing font in table cells with a src of `Buffer` or `UintArray`, `Not a supported font format or standard PDF font.` will be thrown. Upon some digging, I found that in `normalizeCell()` the font object is deep-merged with other fonts in table styles https://github.com/foliojs/pdfkit/blob/2fdafa275a6bc2c8751cd952edc3844545ade57d/lib/table/normalize.js#L96 This line took an unusually long time to execute, and after this the font src became something like ```js console.log(font.src) // { '1': number, '2': number, '3': number, ... } ``` ## Code sample <!-- Post code or a link to a live example (can fork from https://repl.it/@blikblum/minimal-pdfkit) that reproduces the issue --> ```typescript import PDFDocument from "pdfkit"; import fs from "fs"; const doc = new PDFDocument(); doc.table().row([ { text: 'Hello World', font: { src: fs.readFileSync(SOME_CUSTOM_FONT), family: FONT_FAMILY }, } ]) ``` ## Possible fix Replace the font deep merge with manual property assignment. Considering the structure of the font object a shallow merge may also be enough. ```js // changing to this worked properly in my case const font = {...colStyle.font, ...rowStyle.font, ...cell.font} ``` ## Your environment * pdfkit version: 0.19.1 * Node version: 24.15.0 * Browser version (if applicable): N/A * Operating System: Windows 11