fix exceptions from missing graph nodes #842
Merged
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Fixes :
Two things went wrong here :
1: I copy/pasted the logic to detect cyclic dependencies from design tokens to other parts.
I didn't cleanup some specific logic that was only intended for design tokens. If a token is missing we throw in that plugin, that is fine because it has different heuristics.
Not fine at all in polyfill/fallback plugins.
2: Strangely we didn't have any tests for dependencies between custom props or custom media were finally a value is missing.