snapshot of https://github.com/dream-num/univer.git (dev, 2026-09-16; blobs > 131072B omitted)

common/shared/tsdown/utils/files.ts

@@ -0,0 +1,60 @@
+import { existsSync, readdirSync, unlinkSync } from 'node:fs';
+import path from 'node:path';
+import { SOURCE_DIRECTORY } from '../constants.ts';
+
+/**
+ * Walks the package source tree and returns whether a given file suffix exists.
+ */
+export function hasSourceFiles(packageDir: string, extension: string) {
+    const sourceDir = path.join(packageDir, SOURCE_DIRECTORY);
+
+    if (!existsSync(sourceDir)) {
+        return false;
+    }
+
+    const stack = [sourceDir];
+
+    while (stack.length > 0) {
+        const currentDir = stack.pop()!;
+        const entries = readdirSync(currentDir, { withFileTypes: true });
+
+        for (const entry of entries) {
+            const fullPath = path.join(currentDir, entry.name);
+
+            if (entry.isDirectory()) {
+                stack.push(fullPath);
+                continue;
+            }
+
+            if (entry.name.endsWith(extension)) {
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Removes emitted css artifacts before a new build so alias copies stay deterministic.
+ */
+export function removeCssArtifacts(dir: string) {
+    if (!existsSync(dir)) {
+        return;
+    }
+
+    const entries = readdirSync(dir, { withFileTypes: true });
+
+    for (const entry of entries) {
+        const fullPath = path.join(dir, entry.name);
+
+        if (entry.isDirectory()) {
+            removeCssArtifacts(fullPath);
+            continue;
+        }
+
+        if (entry.name.endsWith('.css')) {
+            unlinkSync(fullPath);
+        }
+    }
+}