Use LazyCompact for SmartString.

CHANGELOG.md

@@ -37,6 +37,10 @@ Enhancements
 * Added `log10()` for `Decimal`.
 * `ln` for `Decimal` is now checked and won't panic.
 
+### String Values
+
+* `SmartString` now uses `LazyCompact` instead of `Compact` to minimize allocations.
+
 ### `Scope` API
 
 * `Scope::set_value` now takes anything that implements `Into<Cow<str>>`.

src/lib.rs

@@ -321,7 +321,7 @@ type StaticVec<T> = smallvec::SmallVec<[T; 3]>;
 pub type StaticVec<T> = smallvec::SmallVec<[T; 3]>;
 
 #[cfg(not(feature = "no_smartstring"))]
-pub(crate) type SmartString = smartstring::SmartString<smartstring::Compact>;
+pub(crate) type SmartString = smartstring::SmartString<smartstring::LazyCompact>;
 
 #[cfg(feature = "no_smartstring")]
 pub(crate) type SmartString = String;