fix entrypoint

README.md

@@ -32,11 +32,17 @@ Installation and usage are easily handled via npm or Deno.
 Execute the following command for installation using Deno.
 
 ```sh
-deno install --allow-read --allow-write --name microcms_sdk_generator https://deno.land/x/microcms_sdk_generator/src/main.ts
+deno install --allow-read --allow-write https://deno.land/x/microcms_sdk_generator/microcms_sdk_generator.ts
 ```
 
 > [microcms\_sdk\_generator \| Deno](https://deno.land/x/microcms_sdk_generator)
 
+Or execute directly.
+
+```sh
+deno run --allow-read --allow-write https://deno.land/x/microcms_sdk_generator/microcms_sdk_generator.ts
+```
+
 ### Installation with npm
 
 Execute the following command for installation using npm.
@@ -47,6 +53,12 @@ npm install --global microcms_sdk_generator
 
 > [microcms\_sdk\_generator \- npm](https://www.npmjs.com/package/microcms_sdk_generator)
 
+Or execute directly.
+
+```sh
+npx microcms_sdk_generator
+```
+
 ## Usage
 
 To use the tool, specify the directory of the schema files and the destination

microcms_sdk_generator.ts

@@ -0,0 +1,5 @@
+import { main } from "./src/main.ts";
+
+if (import.meta.main) {
+  await main();
+}

src/main.ts

@@ -13,4 +13,6 @@ export async function main() {
   await generate({ schemaDir, dstFilePath });
 }
 
-await main();
+if (import.meta.main) {
+  await main();
+}