FlatRemapper

Rewrites the @Metadata proto alongside the bytecode. Sits ABOVE the ClassRemapper, so the proto handed down is already in the runtime namespace: ASM remaps an annotation's Type values and nothing else, and d1/d2 are plain strings it would pass straight through — which is what left kotlin-reflect resolving mojmap classifiers no non-mojmap runtime has, degrading to ??? or throwing with the name nowhere in the message. remapper is the bytecode's, the only one that knows this module's classes.

One module's remap. ASM hands a callback nothing but owner, name and descriptor, so the module's own classes (own, each to its direct supertypes) ride on the remapper. A member they own is resolved every time, never memoized: its key spells this eval's names, which no later eval asks for — and one reusing a name would get this module's answer.

cr's direct supertypes, super first then interfaces; a null super is java/lang/Object.

Remap every .class in input — bytecode AND @Metadata. Sidecar files (.kotlin_module etc.) ride along unchanged.

owner + all ancestors, transitively; first table hit wins (see class note on why first==correct).

The rewritten @Metadata fields, or null to re-emit the original verbatim.

name's direct supertypes, cached. Two sources: mc-symbols; and the game loader, which holds the only copy of a mod / loader type that subclasses MC. A name neither answers has no known supers → empty.