Fixes pkgxdev#242

lloydhowell · Dec 11, 2022 · 07ac92f · 07ac92f
1 parent a14735b
commit 07ac92f
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Showing 2 changed files with 15 additions and 2 deletions.
diff --git a/src/utils/semver.ts b/src/utils/semver.ts
@@ -147,9 +147,17 @@ export class Range {
         }
 
         match = input.match(/^>=((\d+\.)*\d+)\s*(<((\d+\.)*\d+))?$/)
+        if (match) {
+          const v1 = parse(match[1])!
+          const v2 = match[3] ? parse(match[4])! : new SemVer([Infinity, Infinity, Infinity])
+          return [v1, v2]
+        }
+
+        match = input.match(/^<\d+(\.\d+)*$/)
         if (!match) throw new Error(`invalid semver range: \`${input}\``)
-        const v1 = parse(match[1])!
-        const v2 = match[3] ? parse(match[4])! : new SemVer([Infinity, Infinity, Infinity])
+
+        const v1 = new SemVer([0,0,0])
+        const v2 = parse(match[0].slice(1)) ?? (() => {throw new Error()})()
         return [v1, v2]
       })
 

diff --git a/tests/unit/semver.test.ts b/tests/unit/semver.test.ts
@@ -64,6 +64,11 @@ Deno.test("semver", async test => {
     assert(f.satisfies(new SemVer("16.0.0")))
     assertFalse(f.satisfies(new SemVer("17.0.0")))
     assert(f.satisfies(new SemVer("18.0.0")))
+
+    const g = new semver.Range("<15")
+    assert(g.satisfies(new SemVer("14.0.0")))
+    assert(g.satisfies(new SemVer("0.0.1")))
+    assertFalse(g.satisfies(new SemVer("15.0.0")))
   })
 
   await test.step("intersection", async test => {