Function applicableN1

src/compute-engine/function-utils.ts:680–687

(fn: Expression)

        // the function over a collection argument that the body consumes whole.
        const shared = shadowedDefs.get(name);
        if (shared !== undefined) {
          // Checkpoint journal (funnel 4): a binding write outside the declare
          // routes. The target is the literal's own block scope, which a
          // restore normally discards along with the literal — journaled all
          // the same, because a re-canonicalization of a literal that PREDATES
          // the window writes into a scope the window must be able to rewind.
          journalCheckpointMapEntry(
            ce,
            block.localScope!.bindings,
            name,
            name,