feat: don't serialize empty ranges

src/lib.rs

@@ -14,12 +14,20 @@ pub use semver_compatibility::SemverCompatibility;
 
 use bump_helpers::{between, bump_major, bump_minor, bump_patch, bump_pre};
 
-/// This needs to be bug-for-bug compatible with https://github.com/dtolnay/semver/blob/master/src/eval.rs
+#[cfg(feature = "serde")]
+fn range_is_empty(r: &Range<Version>) -> bool {
+    r == &Range::empty()
+}
 
+/// This needs to be bug-for-bug compatible with https://github.com/dtolnay/semver/blob/master/src/eval.rs
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[derive(Debug, PartialEq, Eq, Clone)]
 pub struct SemverPubgrub {
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "range_is_empty"))]
+    #[cfg_attr(feature = "serde", serde(default = "Range::empty"))]
     normal: Range<Version>,
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "range_is_empty"))]
+    #[cfg_attr(feature = "serde", serde(default = "Range::empty"))]
     pre: Range<Version>,
 }