Improve schema file control in the current folder

dist/main.cjs

@@ -63,7 +63,7 @@ ${E.join(`
 `)}
 
 @enduml
-`}async function wo(s,t){let o=await zr.promises.readFile(s,"utf8"),E=Ea(o),T=Uo(E),c=t||Zr.default.parse(s).dir,O=Zr.default.join(c,`${Zr.default.parse(s).name}.puml`);return await zr.promises.mkdir(c,{recursive:!0}),await zr.promises.writeFile(O,T,"utf8"),{pumlFilePath:O,pumlStr:T}}0&&(module.exports={schemaToErd});
+`}async function wo(s,t){let o=await zr.promises.readFile(s,"utf8"),E=Ea(o),T=Uo(E),c=t||Zr.default.parse(s).dir,O=Zr.default.join(c,`${Zr.default.parse(s).name}.puml`);return c&&await zr.promises.mkdir(c,{recursive:!0}),await zr.promises.writeFile(O,T,"utf8"),{pumlFilePath:O,pumlStr:T}}0&&(module.exports={schemaToErd});
 /**
  * @license
  * Lodash <https://lodash.com/>

dist/main.mjs

@@ -63,7 +63,7 @@ ${E.join(`
 `)}
 
 @enduml
-`}async function ia(s,t){let o=await go.readFile(s,"utf8"),E=oa(o),T=vo(E),c=t||Mo.parse(s).dir,O=Mo.join(c,`${Mo.parse(s).name}.puml`);return await go.mkdir(c,{recursive:!0}),await go.writeFile(O,T,"utf8"),{pumlFilePath:O,pumlStr:T}}export{ia as schemaToErd};
+`}async function ia(s,t){let o=await go.readFile(s,"utf8"),E=oa(o),T=vo(E),c=t||Mo.parse(s).dir,O=Mo.join(c,`${Mo.parse(s).name}.puml`);return c&&await go.mkdir(c,{recursive:!0}),await go.writeFile(O,T,"utf8"),{pumlFilePath:O,pumlStr:T}}export{ia as schemaToErd};
 /**
  * @license
  * Lodash <https://lodash.com/>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "schema-to-erd",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "description": "Generate ERD UML file from Schema DDL file",
   "type": "module",
   "main": "dist/main.cjs",

src/schema_to_erd.js

@@ -11,7 +11,9 @@ export default async function schemaToErd(schemaFilePath, outputDirPath) {
 
   const pumlDirPath = outputDirPath || path.parse(schemaFilePath).dir;
   const pumlFilePath = path.join(pumlDirPath, `${path.parse(schemaFilePath).name}.puml`);
-  await fs.mkdir(pumlDirPath, { recursive: true });
+  if (pumlDirPath) {
+    await fs.mkdir(pumlDirPath, { recursive: true });
+  }
   await fs.writeFile(pumlFilePath, pumlStr, 'utf8');
 
   return { pumlFilePath, pumlStr };