Adds figma.exposeInstanceSwap(slots, candidates, propertyName), which
exposes one or more nested instances as an instance-swap slot — the
enclosing component (or component set, walking up past intermediate
variant members) gets an INSTANCE_SWAP property offering the given
candidates, and each slot instance is tagged to respond to it. Mirrors
Figma's "Create component property > Instance swap", letting a designer
pick which component fills a slot (e.g. an icon on a button) instead of
the slot being baked-in static content.
Exposed as the expose_instance_swap MCP/CLI/chat tool.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
createComponentFromNode copied only a hand-picked list of fields onto the
new COMPONENT node, omitting primaryAxisSizing/counterAxisSizing. A HUG-sized
auto-layout frame silently reverted to FIXED sizing on conversion, so later
padding changes no longer resized the frame (itemSpacing still worked since
it doesn't affect the frame's own size).
- Match the Figma parent and insertion-index API contract\n- Reject duplicate component references before graph mutation\n- Share slash-name variant derivation with editor actions\n- Add structural regression coverage and changelog entry
figma.combineAsVariants() was unimplemented in the scripting/automation
layer (figma-api/proxy.ts's compatibility surface), even though the editor
UI already has a full equivalent — createComponentSetFromComponents()
(editor/components.ts) plus wrapSelectionInContainer()
(editor/structure/container-wrap.ts) — wired to the app's own "Create
component set" menu action.
This ports that logic down to FigmaAPI (the class MCP tools, the CLI, and
AI chat scripting all run against): wraps selected COMPONENT nodes sharing
a parent into a COMPONENT_SET, and derives variant property definitions from
"Category/Value" node-name segments, matching the editor behavior exactly.
Drops the undo-stack push and selection-state writes the editor path has,
since neither concept exists at the scripting layer — everything else is
the same primitives (SceneGraph.createNode/insertChildAt/reparentNode),
which FigmaAPI already had direct access to.
Also adds a matching combine_as_variants tool (packages/core/src/tools/
create/components.ts) registered in EXTENDED_TOOLS, so it's exposed
through MCP, the CLI, and AI chat alongside the existing create_component/
create_instance tools.
- Move newly split tests under explicit domain subfolders
- Update nested helper imports after the moves
- Add a lint guard against repeating existing sibling domains as filename prefixes
