Support single-package (non-monorepo) repos

Instead of throwing "No workspace globs found" when no workspace
configuration is detected, treat the root directory as the only
package. Also default relativeDir to "." for root packages.

Author: theoephraim

packages/bumpy/src/core/workspace.ts

@@ -10,24 +10,31 @@ export interface WorkspaceDiscoveryResult {
   catalogs: CatalogMap;
 }
 
-/** Discover all workspace packages and catalogs in a monorepo */
+/** Discover all workspace packages and catalogs in a monorepo or single-package repo */
 export async function discoverWorkspace(rootDir: string, config: BumpyConfig): Promise<WorkspaceDiscoveryResult> {
   const { globs, catalogs } = await detectWorkspaces(rootDir);
-  if (globs.length === 0) {
-    throw new Error('No workspace globs found. Is this a monorepo?');
-  }
 
   const packages = new Map<string, WorkspacePackage>();
-  for (const glob of globs) {
-    const dirs = await resolveGlob(rootDir, glob);
-    for (const dir of dirs) {
-      const pkg = await loadWorkspacePackage(dir, rootDir, config);
-      if (pkg) {
-        if (!isPackageManaged(pkg.name, pkg.private, config, pkg.bumpy)) continue;
-        packages.set(pkg.name, pkg);
+
+  if (globs.length === 0) {
+    // Single-package repo — treat the root as the only package
+    const pkg = await loadWorkspacePackage(rootDir, rootDir, config);
+    if (pkg && isPackageManaged(pkg.name, pkg.private, config, pkg.bumpy)) {
+      packages.set(pkg.name, pkg);
+    }
+  } else {
+    for (const glob of globs) {
+      const dirs = await resolveGlob(rootDir, glob);
+      for (const dir of dirs) {
+        const pkg = await loadWorkspacePackage(dir, rootDir, config);
+        if (pkg) {
+          if (!isPackageManaged(pkg.name, pkg.private, config, pkg.bumpy)) continue;
+          packages.set(pkg.name, pkg);
+        }
       }
     }
   }
+
   return { packages, catalogs };
 }
 
@@ -131,7 +138,7 @@ async function loadWorkspacePackage(
     name,
     version: (pkg.version as string) || '0.0.0',
     dir: resolve(dir),
-    relativeDir: relative(rootDir, dir),
+    relativeDir: relative(rootDir, dir) || '.',
     packageJson: pkg,
     private: !!pkg.private,
     dependencies: (pkg.dependencies as Record<string, string>) || {},