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stampControl

stampControl(stamp): string | null

Defined in: packages/compiler/src/stamp-partition.ts:297

Which runtime control moves a stamp’s value, or null when it is constant.

Read off the shape table’s control flag. A stamp missing that flag would silently make a block look controlFree, and step 4’s whole promise is that such a block’s matrix is constant — so the omission would be a factorisation frozen against a knob that still moves.

Stamp

string | null