Fix version validation for v0 in non-breaking policy. (#130)

utils/versioning.test.ts

@@ -10,6 +10,9 @@ describe('validateCompatibility', () => {
     ["1.0.0", "1.0.0"], // same
     ["1.0.0-alpha.1", "1.0.0"], // action is newer than pre-release
     ["0.1.0", "0.1.1"], // action is newer during active development
+    ["0.0.158", "0.0.158"], // bug #129
+    ["0.0.159", "0.0.158"], // bug #129
+    ["0.0.158", "0.0.159"], // bug #129
     ["1.0.0", "1.0.1"], // action patched
     ["1.0.0", "1.1.0"], // action has a new feature (backward compatible)
     ["1.0.1", "1.0.0"], // payload is newer (patch)

utils/versioning.ts

@@ -31,7 +31,7 @@ export function validateCompatibility(payloadVersion: string, actionVersion: str
 
   const compatibilityRange = COMPATIBILITY_POLICY === 'same-features'
     ? `^${major}.${minor}.${major === 0 ? patch : 0}`
-    : `^${major}.${major === 0 ? minor : 0}.0`; // non-breaking
+    : `^${major}.${major === 0 ? minor : 0}.${major === 0 ? "x" : 0}`; // non-breaking
 
   if (!semver.satisfies(actionVersion, compatibilityRange)) {
     throw new Error(