Multiple Realms being created?

[katelynsills]

I'm in the process of reorganizing the kernel state, and moved the kernel state out of kernel.js and into another file under another sub-directory. This included state related functions, like dump and getState and loadState. To create the kernel obj in kernel.js, I just changed the properties of the kernel obj, such as dump: kernelState.dump, where kernelState.dump is an import from the other file.

I was getting an error: (node:82523) UnhandledPromiseRejectionWarning: TypeError: prototype function () { [native code] } of unknown.dump is not already in the fringeSet

I asked Mark about it and he suggested trying

dump() {
  return kernelState.dump();
},

And that worked. Mark says this is a symptom of having multiple realms. Also, the prototype of dump was not Function.prototype and had an arguments property that Function.prototype didn't have.

[katelynsills]

Ah! I figured it out, I wasn't making the kernelState inside the stringified code. False alarm.

[warner]

in the old repo. this was SwingSet issue 47