adding copyDir utility

Author: Raaghu

src/copyDir.ts

@@ -0,0 +1,30 @@
+import { dirname, join, relative } from "path";
+import { Config } from "./Config";
+import { copyFile, mkdir, readdir, stat } from "fs/promises";
+
+export const copyDir = async (sourceDir: string, targetDir: string) => {
+  const rootDir = Config.getRootDir();
+  const fullSourceDir = join(rootDir, sourceDir);
+  const dirsToCopy = [fullSourceDir];
+  while (dirsToCopy.length > 0) {
+    const dirToCopy = dirsToCopy.shift();
+    const files = await readdir(dirToCopy);
+    await Promise.all(
+      files.map(async file => {
+        const fileOrDirPath = join(dirToCopy, file);
+        const stats = await stat(fileOrDirPath);
+        if (stats.isDirectory()) {
+          dirsToCopy.push(fileOrDirPath);
+        } else {
+          const targetPath = join(
+            targetDir,
+            relative(fullSourceDir, fileOrDirPath)
+          );
+          const targetDirname = dirname(targetPath);
+          await mkdir(targetDirname, { recursive: true });
+          await copyFile(fileOrDirPath, targetPath);
+        }
+      })
+    );
+  }
+};

src/index.ts

@@ -3,3 +3,4 @@ export * from "./Config";
 export * from "./getContent";
 export * from "./listContent";
 export * from "./getFile";
+export * from "./copyDir";