Experimental
Return a new value to update primitive values, or void to skip the update. For strings, receives a MutableText object with splice/updateText methods.
Note: Objects and arrays should be mutated in place (not returned). Returning non-primitives will trigger a runtime warning.
This API is experimental and may change in future versions.
Return a new value to update primitive values, or void to skip the update. For strings, receives a MutableText object with splice/updateText methods.
Note: Objects and arrays should be mutated in place (not returned). Returning non-primitives will trigger a runtime warning.
This API is experimental and may change in future versions.