fix: don't clean root directory if set as outDir (#343)

Author: danielroe

package.json

@@ -51,6 +51,7 @@
     "rollup": "^4.6.1",
     "rollup-plugin-dts": "^6.1.0",
     "scule": "^1.1.1",
+    "ufo": "^1.3.2",
     "untyped": "^1.4.0"
   },
   "devDependencies": {

pnpm-lock.yaml

@@ -1,6 +1,7 @@
 import Module from "node:module";
 import { promises as fsp } from "node:fs";
 import { resolve, relative, isAbsolute, normalize } from "pathe";
+import { withTrailingSlash } from "ufo";
 import type { PackageJson } from "pkg-types";
 import chalk from "chalk";
 import { consola } from "consola";
@@ -216,7 +217,11 @@ async function _build(
         .filter(Boolean)
         .sort() as unknown as Set<string>,
     )) {
-      if (cleanedDirs.some((c) => dir.startsWith(c))) {
+      if (
+        dir === options.rootDir ||
+        options.rootDir.startsWith(withTrailingSlash(dir)) ||
+        cleanedDirs.some((c) => dir.startsWith(c))
+      ) {
         continue;
       }
       cleanedDirs.push(dir);