Canvas renders font registered previously

[CodysseusX]

I am using node canvas on AWS Lambda to produce images of text (different fonts, sizes, colours etc.) I use the registerFont() method of the API to register my font. The first time I call my function, I get the expected output. However, if I call again with a different font and font file this time, the canvas renders some previously registered font. My lambda is still warm, therefore the data is still there. I am using unique font names, files and families. Therefore, it makes no sense to me, why the canvas is rendering text using previously registered fonts. I went through several related github issues, but couldn't find a solution. Any ideas would be greatly appreciated.

Issue or Feature

Getting error: 'Fontconfig error: Cannot load default config file'

Steps to Reproduce

Register different fonts and render text. Does it render them as expected?

Your Environment

• Version of node-canvas (output of npm list canvas or yarn list canvas):
• Environment (e.g. node 4.2.0 on Mac OS X 10.8):
  Node 10 on AWS Lambda (Layers)

[CodysseusX]

I resolved this by doing the following:

1. Uploaded my fonts as a Lambda layer.
2. Got the fontFamily metadata of each font file using Font Forge or https://opentype.js.org/font-inspector.html
3. Registered the font with the registerFont() method by using the exact font family description I got from the metadata.

It worked perfectly.

P.S. It will only work for unique font families. For some reason, registering three different font files (.e.g Regular, Bold and Light) with the same font family description and a different weight, didn''t work.