Update the api call for prerelease to semver

change/beachball-a33d8be0-b765-47ac-a8c8-c94d80374735.json

@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "Update the api call for prerelease to semver",
+  "packageName": "beachball",
+  "email": "863023+radium-v@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}

src/__e2e__/bump.test.ts

@@ -684,12 +684,12 @@ describe('version bumping', () => {
     const packageInfos = getPackageInfos(repo.rootPath);
 
     expect(packageInfos['pkg-1'].version).toBe('1.0.1-beta.0');
-    expect(packageInfos['pkg-2'].version).toBe('1.0.1');
-    expect(packageInfos['pkg-3'].version).toBe('1.0.1');
+    expect(packageInfos['pkg-2'].version).toBe('1.0.1-beta.0');
+    expect(packageInfos['pkg-3'].version).toBe('1.0.1-beta.0');
 
     expect(packageInfos['pkg-2'].dependencies!['pkg-1']).toBe('1.0.1-beta.0');
-    expect(packageInfos['pkg-3'].devDependencies!['pkg-2']).toBe('1.0.1');
-    expect(packageInfos['pkg-4'].peerDependencies!['pkg-3']).toBe('1.0.1');
+    expect(packageInfos['pkg-3'].devDependencies!['pkg-2']).toBe('1.0.1-beta.0');
+    expect(packageInfos['pkg-4'].peerDependencies!['pkg-3']).toBe('1.0.1-beta.0');
 
     const changeFiles = getChangeFiles(repo.rootPath);
     expect(changeFiles.length).toBe(0);

src/bump/bumpPackageInfoVersion.ts

@@ -22,7 +22,7 @@ export function bumpPackageInfoVersion(pkgName: string, bumpInfo: BumpInfo, opti
     return;
   }
   if (!info.private) {
-    info.version = semver.inc(info.version, changeType, options.prereleasePrefix || undefined) as string;
+    info.version = semver.inc(info.version, options.prereleasePrefix ? 'prerelease' : changeType, options.prereleasePrefix || undefined) as string;
     modifiedPackages.add(pkgName);
   }
 }