通用隐藏节点

LamCommonHidden (通用隐藏节点, "generic hidden node") is the strangest node in ComfyUI_Lam, and I'll be straight with you: there's almost nothing to it. It has no inputs, no configuration, and exactly one output whose type is * - ComfyUI's "any" type, meaning it claims to satisfy whatever input you connect it to. And it's marked as an output node, so ComfyUI treats reaching it as "the workflow did its thing."

So what is it for? It's a placeholder and a wiring convenience, not a real processor. Because the output is *, you can drop it onto a graph when some input demands a connection and you don't have (or don't care about) a real value - a filler to satisfy the type system, or a do-nothing terminal so the workflow reports completion without generating anything. In graphs shared from the pack's Chinese community, it shows up as a scaffold: connect a loop or a group to it when you're still building and just want the graph to run end-to-end.

Honest expectations

• It computes nothing and transforms nothing. Whatever comes out of it is a generic empty/placeholder value, not data.
• Its main practical value is keeping a half-built graph executable and giving you a completion marker that costs zero.
• If you connected real data and expected it to pass through - it won't. It has no inputs, so it can't.

Install

The usual pack install; it's dependency-free beyond the pack itself:

cd ComfyUI/custom_nodes
git clone https://github.com/yanlang0123/ComfyUI_Lam

and restart.

When you'd actually use it

• A draft graph where a *-typed wire needs a source before you've built the real one.
• A completion marker at the end of a scaffolding workflow - since it's an output node, ComfyUI finishes cleanly.
• A filler when a loop or switch node insists on an ANY connection.

For actual debugging output, the pack's LamCommonPrint nodes are the better tool - they print real values to the console. This one is for shape, not substance, and that's fine: every kitchen-sink pack has a node whose job is mostly being there.