Why createMemo is not lazy?

[Strate]

I realized that createMemo is not lazy - it calls callback as soon as createMemo defined. This leads to several inconsistenses

Current state of view might not need actual value of that memo, so computation could be defer:

const memoizedValue = createMemo(() => expensiveFunction(signal()))

<Show when={otherFlag()}>
  <div>{JSON.stringify(memoizedValue())}</div>
</Show>

In this example we do not need memoizedValue, until otherFlag() is set.

Second example is about messing with Suspenses, I extracted to playground https://playground.solidjs.com/anonymous/81480f12-9cf2-46b2-8a1e-4f98917b74d2
tldr: using createMemo could implicitly trigger resource to load, resulting in triggering unexpected Suspense boundary

What is the reason for making createMemo eager instead of lazy?