Move sourcemaps out of distributions at build

.gitignore

@@ -26,3 +26,4 @@ node
 storybook-out
 coverage
 package.json.backup
+sourcemaps

package.json

@@ -69,7 +69,7 @@
     "isChromatic.d.ts"
   ],
   "scripts": {
-    "build": "clean-package && tsup && clean-package restore",
+    "build": "clean-package && tsup && ./scripts/moveSourceMaps.mjs  && clean-package restore",
     "build-storybook": "storybook build --stats-json",
     "build-test-storybook": "cross-env SMOKE_TEST=true storybook build -o test-storybook --stats-json",
     "build-subdir": "cd subdir ; yarn build ; cd ..",

scripts/moveSourceMaps.mjs

@@ -0,0 +1,26 @@
+#!/usr/bin/env node
+
+import fs from 'node:fs';
+
+async function main() {
+  fs.mkdirSync('sourcemaps', { recursive: true });
+  for (const file of fs.readdirSync('sourcemaps')) {
+    fs.unlinkSync(`sourcemaps/${file}`);
+  }
+
+  for (const file of fs.readdirSync('dist')) {
+    if (file.endsWith('.map')) {
+      fs.copyFileSync(`dist/${file}`, `sourcemaps/${file}`);
+      fs.unlinkSync(`dist/${file}`);
+    }
+  }
+
+  for (const file of fs.readdirSync('action')) {
+    if (file.endsWith('.map')) {
+      fs.copyFileSync(`action/${file}`, `sourcemaps/${file}`);
+      fs.unlinkSync(`action/${file}`);
+    }
+  }
+}
+
+main();