The minified build is broken about realms-shim

[warner]

Should we enable CI for the new shim:test-integration command? Running npm run build && npm run shim:test-integration locally fails:

ok 8 new Real() should throws
# Realm.makeRootRealm()
ReferenceError: _315‍ is not defined
    at a (eval at createNewUnsafeRec (/home/warner/bindmounts/trees/realms-shim/dist/realms-shim.esm.min.js:1:5968), <anonymous>:1)
    at repairFunctions (eval at createNewUnsafeRec (/home/warner/bindmounts/trees/realms-shim/dist/realms-shim.esm.min.js:1:5968), <anonymous>:1)
    at eval (eval at createNewUnsafeRec (/home/warner/bindmounts/trees/realms-shim/dist/realms-shim.esm.min.js:1:5968), <anonymous>:1)
    at eval (<anonymous>)
    at createNewUnsafeRec (/home/warner/bindmounts/trees/realms-shim/dist/realms-shim.esm.min.js:1)
    at initRootRealm (/home/warner/bindmounts/trees/realms-shim/dist/realms-shim.esm.min.js:9:3060)
    at c (/home/warner/bindmounts/trees/realms-shim/dist/realms-shim.esm.min.js:1)
    at TamedFunction.makeRootRealm (/home/warner/bindmounts/trees/realms-shim/dist/realms-shim.esm.min.js:1)
    at Test.<anonymous> (/home/warner/bindmounts/trees/realms-shim/test-integration/realm.esm-min.test.js:13:19)
    at Test.bound [as _cb] (/home/warner/bindmounts/trees/realms-shim/node_modules/tape/lib/test.js:77:32)