1export const genGlobal2Ctx = <T,>() => {
2  // Unique key per instance — previously all instances shared one 'myVal' slot,
3  // so two contexts collided (last enterWith wins). Symbol keys isolate them.
4  const key = Symbol()
5  const globalAny = global as Record<symbol, unknown>
6
7  const enterWith = (newVal: T) => {
8    globalAny[key] = newVal
9  }
10
11  return {
12    enterWith,
13    getStore: () => globalAny[key] as T | undefined
14  }
15}
16