widthOfString/heightOfString not accurate?

[altano]

Bug Report

Description of the problem

If I call height/widthOfString and draw a rect+stroke with the dimensions returned, I would expect the rect to encompass the text. But that isn't the behavior I'm seeing.

Here are the issues I'm seeing:

1. With Helvetica, the box is too wide (wider than the pdf) and too tall:

2. With Inter SemiBold, the height looks just about right:

3. But as soon as I give the Inter text a negative line gap, the height is wrong:

My goal is to measure the size of text and choose the largest font size that will fill a given area. If I can't compute that area the task is impossible.

Is there a better way of getting the area of the rendered text?

Code sample

code that demonstrates these issues: https://github.com/altano/pdfkit-bugs/tree/main

Just clone, npm install && npm start

Your environment

• pdfkit version: v0.13.0
• Node version: v18.16.0
• Browser version (if applicable): n/a
• Operating System: macOS 13.4.1