diff --git a/lib/esm/satisfies.js b/lib/esm/satisfies.js
index 7586b71657332f855431c4dd4f05e9394fd9aac3..a6ec29bfc98907c67ed4af71fca73bd8bff88798 100644
--- a/lib/esm/satisfies.js
+++ b/lib/esm/satisfies.js
@@ -40,8 +40,9 @@ export const satisfies = (version, range) => {
     // else range of either "~" or "^" is assumed
     const [v1, v2, v3, , vp] = validateAndParse(version);
     const [r1, r2, r3, , rp] = validateAndParse(range);
-    const v = [v1, v2, v3];
+    const v = [v1, v2 !== null && v2 !== void 0 ? v2 : 'x', v3 !== null && v3 !== void 0 ? v3 : 'x'];
     const r = [r1, r2 !== null && r2 !== void 0 ? r2 : 'x', r3 !== null && r3 !== void 0 ? r3 : 'x'];
+
     // validate pre-release
     if (rp) {
         if (!vp)
diff --git a/lib/esm/utils.js b/lib/esm/utils.js
index b5cc8b9927ab38fc67032c133b531e95ec4cec15..ec56105fd2d806aa922f1488a27b02c56aff1865 100644
--- a/lib/esm/utils.js
+++ b/lib/esm/utils.js
@@ -28,7 +28,7 @@ const compareStrings = (a, b) => {
 };
 export const compareSegments = (a, b) => {
     for (let i = 0; i < Math.max(a.length, b.length); i++) {
-        const r = compareStrings(a[i] || '0', b[i] || '0');
+        const r = compareStrings(a[i] || 'x', b[i] || 'x');
         if (r !== 0)
             return r;
     }
diff --git a/lib/umd/index.js b/lib/umd/index.js
index 2cfef261bca520e21ed41fc14950732b8aa6339b..1059784db86635f3aaaba83b5a72c5015e1d8490 100644
--- a/lib/umd/index.js
+++ b/lib/umd/index.js
@@ -152,7 +152,7 @@
         // else range of either "~" or "^" is assumed
         const [v1, v2, v3, , vp] = validateAndParse(version);
         const [r1, r2, r3, , rp] = validateAndParse(range);
-        const v = [v1, v2, v3];
+        const v = [v1, v2 !== null && v2 !== void 0 ? v2 : 'x', v3 !== null && v3 !== void 0 ? v3 : 'x'];
         const r = [r1, r2 !== null && r2 !== void 0 ? r2 : 'x', r3 !== null && r3 !== void 0 ? r3 : 'x'];
         // validate pre-release
         if (rp) {
diff --git a/package.json b/package.json
index b05b3daf706d7ba4e594233f8791fc3007a8e2cd..e51e76b86f95e9ebf0b5dba3b82aeb119628528d 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "prepublishOnly": "npm run build",
     "test": "c8 --reporter=lcov mocha"
   },
-  "main": "./lib/umd/index.js",
+  "main": "./lib/src/index.ts",
   "module": "./lib/esm/index.js",
   "types": "./lib/esm/index.d.ts",
   "sideEffects": false,
diff --git a/src/satisfies.ts b/src/satisfies.ts
index 66cb171d7f32e68fdda6929d2da223b97a053737..6b4973f037843f264338a01efdc4ace5dcf042cd 100644
--- a/src/satisfies.ts
+++ b/src/satisfies.ts
@@ -43,7 +43,7 @@ export const satisfies = (version: string, range: string): boolean => {
   // else range of either "~" or "^" is assumed
   const [v1, v2, v3, , vp] = validateAndParse(version);
   const [r1, r2, r3, , rp] = validateAndParse(range);
-  const v = [v1, v2, v3];
+  const v = [v1, v2 ?? 'x', v3 ?? 'x'];
   const r = [r1, r2 ?? 'x', r3 ?? 'x'];
 
   // validate pre-release