If you want to do VDOM stuff, make money with it and focus on one Toolkit only, then learn React. It has it's downsides, but it's the leader in use and ecosystem and will only become obsolete when VDOM libraries disappear alltogether. ... Which actually might start happening soon.
If you want to skip VDOM solutions for the render side of things, use JS template literals with libraries such as lit or HyperHTML. Those use the newest browser features and don't need VDOM anymore and thus are notably faster and leaner. But they're not all that popular just yet and may find replacement by completely native webcomponent features. They also may lack extended integration with other features such as routing or extended state handling.
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If you want to do VDOM stuff, make money with it and focus on one Toolkit only, then learn React. It has it's downsides, but it's the leader in use and ecosystem and will only become obsolete when VDOM libraries disappear alltogether. ... Which actually might start happening soon.
If you want to skip VDOM solutions for the render side of things, use JS template literals with libraries such as lit or HyperHTML. Those use the newest browser features and don't need VDOM anymore and thus are notably faster and leaner. But they're not all that popular just yet and may find replacement by completely native webcomponent features. They also may lack extended integration with other features such as routing or extended state handling.