feat(sdk): add isValidConnection and reactFlowProps to Root#35
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Expose two opt-in props on <WorkflowBuilder.Root>: - isValidConnection: validates connections live while the user drags them. Receives the candidate connection plus the resolved source/target nodes, so a rule branches on data.type without touching the store. A rejected drop creates no edge and does not flicker. Fails open when an endpoint cannot be resolved to a node. - reactFlowProps: escape hatch that forwards extra props to the underlying ReactFlow canvas. SDK-owned props (graph data, connection/selection/change handlers, type maps, the connection line) plus colorMode are omitted from the type and spread last, so they always win and the editor cannot be broken from the outside. Theme via the SDK design tokens, not colorMode. Config flows through module-level holders (same pattern as edge-templates), written during Root render so descendants read current values on first paint. Tests cover the holder, the isValidConnection adapter, and the spread-order contract (owned props win, defaults stay overridable). Demo and SDK + site docs updated. Changeset: minor.
piotrblaszczyk
requested review from
librowski,
lukasz-jazwa and
szymon-t-sc
as code owners
lukasz-jazwa
approved these changes
Jun 15, 2026
librowski
approved these changes
Jun 15, 2026
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Expose two opt-in props on <WorkflowBuilder.Root>:
Config flows through module-level holders (same pattern as edge-templates), written during Root render so descendants read current values on first paint.
Tests cover the holder, the isValidConnection adapter, and the spread-order contract (owned props win, defaults stay overridable). Demo and SDK + site docs updated. Changeset: minor.