fix: remove tsup js file

Author: stevensacks

tsup.config.js

@@ -1,15 +1,11 @@
-import {defineConfig, type Options} from 'tsup';
 import {readFile} from 'node:fs/promises';
+
+import {defineConfig, type Options} from 'tsup';
+
 import {globalPackages as globalManagerPackages} from 'storybook/internal/manager/globals';
 import {globalPackages as globalPreviewPackages} from 'storybook/internal/preview/globals';
 
-// The current browsers supported by Storybook v7
-const BROWSER_TARGET: Options['target'] = [
-    'chrome100',
-    'safari15',
-    'firefox91',
-];
-const NODE_TARGET: Options['target'] = ['node18'];
+const NODE_TARGET: Options['target'] = 'node20';
 
 type BundlerConfig = {
     bundler?: {
@@ -48,7 +44,9 @@ export default defineConfig(async (options) => {
         minify: !options.watch,
         treeshake: true,
         sourcemap: true,
-        clean: options.watch ? false : true,
+        // keep this line commented until https://github.com/egoist/tsup/issues/1270 is resolved
+        // clean: options.watch ? false : true,
+        clean: false,
     };
 
     const configs: Options[] = [];
@@ -64,8 +62,8 @@ export default defineConfig(async (options) => {
                 resolve: true,
             },
             format: ['esm', 'cjs'],
-            target: [...BROWSER_TARGET, ...NODE_TARGET],
             platform: 'neutral',
+            target: NODE_TARGET,
             external: [...globalManagerPackages, ...globalPreviewPackages],
         });
     }
@@ -78,7 +76,6 @@ export default defineConfig(async (options) => {
             ...commonConfig,
             entry: managerEntries,
             format: ['esm'],
-            target: BROWSER_TARGET,
             platform: 'browser',
             external: globalManagerPackages,
         });
@@ -95,7 +92,6 @@ export default defineConfig(async (options) => {
                 resolve: true,
             },
             format: ['esm', 'cjs'],
-            target: BROWSER_TARGET,
             platform: 'browser',
             external: globalPreviewPackages,
         });
@@ -109,7 +105,6 @@ export default defineConfig(async (options) => {
             ...commonConfig,
             entry: nodeEntries,
             format: ['cjs'],
-            target: NODE_TARGET,
             platform: 'node',
         });
     }