test_text_collision_leaflet
Demo: https://soiqualang.github.io/label_collision_leaflet_v2/t2.html
Ex: https://github.com/soiqualang/Leaflet.LabelTextCollision/blob/master/dist/L.LabelTextCollision.js
Thanks @NguyenDucLam found this repo
https://geovation.github.io/labelgun/examples/leaflet/index.html
file t1.html
https://soiqualang.github.io/label_collision_leaflet_v2/t1.html
file t2.html
https://soiqualang.github.io/label_collision_leaflet_v2/t2.html