1 files changed, 22 insertions, 7 deletions
diff --git a/js/mkdir.ts b/js/mkdir.ts
index 8040bd51b..2981976ab 100644
--- a/js/mkdir.ts
+++ b/js/mkdir.ts
@@ -3,33 +3,48 @@ import * as msg from "gen/msg_generated";
 import * as flatbuffers from "./flatbuffers";
 import * as dispatch from "./dispatch";
 
-/** Creates a new directory with the specified path and permission
- * synchronously.
+/** Creates a new directory with the specified path synchronously.
+ * If `recursive` is set to true, nested directories will be created (also known
+ * as "mkdir -p").
+ * `mode` sets permission bits (before umask) on UNIX and does nothing on
+ * Windows.
  *
  *       import { mkdirSync } from "deno";
  *       mkdirSync("new_dir");
+ *       mkdirSync("nested/directories", true);
  */
-export function mkdirSync(path: string, mode = 0o777): void {
-  dispatch.sendSync(...req(path, mode));
+export function mkdirSync(path: string, recursive = false, mode = 0o777): void {
+  dispatch.sendSync(...req(path, recursive, mode));
 }
 
-/** Creates a new directory with the specified path and permission.
+/** Creates a new directory with the specified path.
+ * If `recursive` is set to true, nested directories will be created (also known
+ * as "mkdir -p").
+ * `mode` sets permission bits (before umask) on UNIX and does nothing on
+ * Windows.
  *
  *       import { mkdir } from "deno";
  *       await mkdir("new_dir");
+ *       await mkdir("nested/directories", true);
  */
-export async function mkdir(path: string, mode = 0o777): Promise<void> {
-  await dispatch.sendAsync(...req(path, mode));
+export async function mkdir(
+  path: string,
+  recursive = false,
+  mode = 0o777
+): Promise<void> {
+  await dispatch.sendAsync(...req(path, recursive, mode));
 }
 
 function req(
   path: string,
+  recursive: boolean,
   mode: number
 ): [flatbuffers.Builder, msg.Any, flatbuffers.Offset] {
   const builder = flatbuffers.createBuilder();
   const path_ = builder.createString(path);
   msg.Mkdir.startMkdir(builder);
   msg.Mkdir.addPath(builder, path_);
+  msg.Mkdir.addRecursive(builder, recursive);
   msg.Mkdir.addMode(builder, mode);
   const inner = msg.Mkdir.endMkdir(builder);
   return [builder, msg.Any.Mkdir, inner];