component-factory | 组件开发、文档、测试、发布的解决方案 | Chat library

You will notice that in the docs, createcontrolcomponent lists only one argument, which is a function to create the instance. You are expecting it to behave like createlayercomponent, which takes two arguments. In createlayercomponent, the second argument is a function to update the layer component when the props change. However, createcontrolcomponent offers no such functionality. react-leaflet is assuming, much like vanilla leaflet, that once your control is added to the map, you won't need to alter it directly.

This gets a bit confusing in terms of leaflet-routing-machine, because you don't need to change the instance of the control, but rather you need to call a method on it which affects the map presentation.

IMO, the best way to go is to use a state variable to keep track of whether or not your waypoints have changed, and use a ref to access the underlying leaflet instance of the routing machine, and call setWayPoints on that: