I have a provider with constants that I use throughout my app; it is imported in app.module and the pages.ts I use it from. I am unsure of the relationship between what is happening in /app vs /pages, and am a little uncomfortable with the same “import” (with pathing differences) on multiple pages, and am wondering if there is a “best practices” way to do this once.
How imports are handled depends on the Ionic Framework version you are using, so that’s something to research.
Anyway, I don’t know about best practices. I think we’re making it up as we go along, and the distillate of good ideas is best-we-know-how practices. But I’ll tell you what I do.
I try to keep all exported constants in the appropriate model folder, because there are seldom constants that belong to the provider. Constants almost always describe some entity, so I model that entity in the models folder, and the providers cause those entities to interact. Example: how many characters long is a preview? That goes in the preview model folder. Then the makePreviewProvider imports the number of characters the preview is supposed to be and makes the preview. So if I ever want to change anything about the preview object, it’s all in the same file location.