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.changeset/forty-waves-fly.md

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+---
+'xstate': patch
+---
+
+The "Attempted to spawn an Actor [...] outside of a service. This will have no effect." warnings are now silenced for "lazily spawned" actors, which are actors that aren't immediately active until the function that creates them are called:
+
+```js
+// ⚠️ "active" actor - will warn
+spawn(somePromise);
+
+// 🕐 "lazy" actor - won't warn
+spawn(() => somePromise);
+
+// 🕐 machines are also "lazy" - won't warn
+spawn(someMachine);
+```
+
+It is recommended that all `spawn(...)`-ed actors are lazy, to avoid accidentally initializing them e.g., when reading `machine.initialState` or calculating otherwise pure transitions. In V5, this will be enforced.