refactor: clean up gen script using promises (#102)

utils/gen-component-script.ts

@@ -1,7 +1,11 @@
 import fs from "fs";
 import path from "path";
+import { promisify } from "util";
+
 import { component, story, test, barrel, type } from "./gen-component-template";
 
+const writeFile = promisify(fs.writeFile);
+
 // Grab component name from terminal argument
 const [name] = process.argv.slice(2);
 if (!name) {
@@ -30,41 +34,19 @@ if (fs.existsSync(dir)) {
 // Create the folder
 fs.mkdirSync(dir);
 
-const writeFileErrorHandler = (err: Error | null) => {
-	if (err) {
-		throw err;
-	}
-};
-
 // Create the component file - my-component.tsx
-fs.writeFile(
-	`${dir}/${kebabCasedName}.tsx`,
-	component(name),
-	writeFileErrorHandler,
-);
+writeFile(`${dir}/${kebabCasedName}.tsx`, component(name));
 
 // Create the type file - types.ts
-fs.writeFile(`${dir}/types.ts`, type(name), writeFileErrorHandler);
+writeFile(`${dir}/types.ts`, type(name));
 
 // Create the test file - my-component.test.tsx
-fs.writeFile(
-	`${dir}/${kebabCasedName}.test.tsx`,
-	test(name),
-	writeFileErrorHandler,
-);
+writeFile(`${dir}/${kebabCasedName}.test.tsx`, test(name));
 
 // Create the Storybook file - my-component.stories.tsx
-fs.writeFile(
-	`${dir}/${kebabCasedName}.stories.tsx`,
-	story(name),
-	writeFileErrorHandler,
-);
+writeFile(`${dir}/${kebabCasedName}.stories.tsx`, story(name));
 
 // Create the barrel file - index.ts
-fs.writeFile(
-	`${dir}/index.ts`,
-	barrel(name, kebabCasedName),
-	writeFileErrorHandler,
-);
+writeFile(`${dir}/index.ts`, barrel(name, kebabCasedName));
 
 console.log(`The ${name} component has been created successfully! 🎉`);