feat: add Version.compare to WASM Version (#1080)

js-rattler/crate/version.rs

@@ -1,6 +1,6 @@
 use crate::JsResult;
 use rattler_conda_types::{Version, VersionBumpType};
-use std::str::FromStr;
+use std::{cmp::Ordering, str::FromStr};
 use wasm_bindgen::prelude::wasm_bindgen;
 
 #[wasm_bindgen]
@@ -130,4 +130,12 @@ impl JsVersion {
     pub fn equals(&self, other: &Self) -> bool {
         self.as_ref() == other.as_ref()
     }
+
+    pub fn compare(&self, other: &Self) -> i8 {
+        match self.as_ref().cmp(other.as_ref()) {
+            Ordering::Less => -1,
+            Ordering::Equal => 0,
+            Ordering::Greater => 1,
+        }
+    }
 }

js-rattler/src/Version.test.ts

@@ -251,4 +251,12 @@ describe("Version", () => {
             expect(new Version("1.2.3a").withAlpha().toString()).toBe("1.2.3a");
         });
     });
+
+    describe("compare", () => {
+        it("should compare version with expected order", () => {
+            expect(new Version("1.2.3").compare(new Version("1.2.3"))).toBe(0);
+            expect(new Version("1.2.0").compare(new Version("1.2.3"))).toBe(-1);
+            expect(new Version("1.2.4").compare(new Version("1.2.3"))).toBe(1);
+        });
+    });
 });

js-rattler/src/Version.ts

@@ -195,4 +195,13 @@ export class Version {
     public withAlpha(): Version {
         return Version.fromNative(this.native.with_alpha());
     }
+
+    /**
+     * Compare two versions.
+     *
+     * Returns `-1` if this < other, `0` if this == other, `1` if this > other
+     */
+    public compare(other: Version): number {
+        return this.native.compare(other.native);
+    }
 }