File size optimization

Currently nsi-id-presets.min.json is about 8MB in size which is a lot. A possible way to solve this problem is to split it per country. There will be duplicated information across files, but it will load much faster for all users. A side effect would be that it will reduce loading times of the editors and speed up the validation speed of brands. Such change will require changes in the build process and changes to how iD and RapiD handle brands (which is why I’m tagging @tyrasd and @bhousel). Are you in support of such change and would it be too hard to implement? Also, are there any other data consumers that will be affected? If there are, it would be nice to leave both “systems” to coexist and add a folder in dist where the new per country method is used.

[westnordost]

I now implemented

• the ability to load presets by country lazily on demand in osmfeatures v4.0
• adapted the build script that fetches the NSI presets from this repository to also split up the presets by country. I also extended the script to expand the UN M49 codes to normal ISO-3166-1 alpha2 country codes, transform includes like “us-ny.geojson” to simply “us-ny” codes (ISO-3166-2) and throw away other “*.geojson”-includes plus those “radius around geoposition”-includes as it is not supported by osmfeatures library
• The files then looks like this

Loading all the presets (normal presets + localization + international brand presets + presets of the country one is in) during startup now takes 0.6s compared to 2.7s before on my phone. So roughly 4 times faster now.

[westnordost]

From my end, no, because I already wrote the script to take apart the nsi.json myself. That script contains additional stuff - as outlined in my last message - that will probably not be done if the files were already separate this way in the dist folder.