Expose font metrics (and potentially additional information)?

[jpt]

hello! is there a way to access hb_ot_metrics_get_position in harfbuzzjs? I could be misunderstanding the codebases but it seems like there are a few kinds of font information (axis info, name table, metrics, etc) that harfbuzz itself makes available, but harfbuzzjs does not. if I understand this correctly, was it a design decision related to the size of the JS library maybe, or something that just didn't make it in for whatever reason, in which case - would a PR making this information available be considered? my use case is a 3D library for the web that I'm working on - it uses harfbuzz for almost everything, but I have to process the binary a second time to read some tables which is unideal

[khaledhosny]

This is mostly done to reduce the file size of the resulting WASM binary. I don’t mind enabling the metrics API, though. I think people who are really consider about file size are more likely to compile themselves and customize it as needed.

[jpt]

that makes sense. the reason I expect it would be challenging to accomplish what I'm trying to do in the other direction (compile my own binary to use with the library, with the parts I need) is mostly that people are less likely to trust a binary that doesn't come from main. maybe as a next step I will try to add metrics locally and see what kind of impact it has on the size, and if it seems reasonable, we can continue discussing?

[khaledhosny]

Sounds good.