some types are any

[jonlepage]

some type are any and can be identifier this one should be MouseEvent or PointerEvent | MouseEvent

data and datas seem also missing type, we code blind with any :)

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for datas , it would be nice if we can get the type. Scenario of usage can be when we want prevent drag on right click, keep select behavior and call a context menue by passing selections.

Solution can be also expose current list if it possible: it seem we need manually check dom elements with class selected, idk if you have any idea to expose a precomputed store of the selected list somewhere? maybe in a weakMap or weakSet of you scare about memleak but with some little perf cost for huge list. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap