refactor(devtools): abstract and reuse the tree visualizer #62264
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Abstract the injector tree visualizer so it can be used for both the Injector Tree and Router Tree tabs without having to rely on separate identical implementations.
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dgp1130
approved these changes
Jun 27, 2025
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Abstract the injector tree visualizer so it can be used for both the Injector Tree and Router Tree tabs without having to rely on separate identical implementations.
Changes
In essence, there is now a single class called
TreeVisualizerthat works withTreeNodes. ATreeNodeshould have alabelandTreeNodechildren. If the tree visualizer user items do not satisfy this format, they should be transformed. TheTreeVisualizerexposes two additional config options – the node and link modifiers – that can be used for applying any instance-specific changes to the SVG elements (e.g. classes, data attributes, etc.). The implementation of the tree visualizer is almost unchanged.Motivation
#62048 – such fixes and improvements require syncing the injector tree and router tree implementations.
Future improvements
Since we now have a single tree visualizer, it makes sense to integrate it in the
tree-visualizer-hostcomponent via composition. The API will be exposed as part of the component and won't require manually tying the host and the visualizer.