Optionally wait in readdir() and list()

README.md

@@ -226,14 +226,22 @@ Returns a stream of all entries in the drive at paths prefixed with `folder`.
 ```js
 {
   recursive: true | false // Whether to descend into all subfolders or not,
-  ignore: String || Array // Ignore files and folders by name.
+  ignore: String || Array // Ignore files and folders by name,
+  wait: true, // Wait for block to be downloaded.
 }
 ```
 
-#### `const stream = drive.readdir(folder)`
+#### `const stream = drive.readdir(folder, [options])`
 
 Returns a stream of all subpaths of entries in drive stored at paths prefixed by `folder`.
 
+`options` include:
+```js
+{
+  wait: true, // Wait for block to be downloaded
+}
+```
+
 #### `const stream = await drive.entries([range], [options])`
 
 Returns a read stream of entries in the drive.

index.js

@@ -478,13 +478,13 @@ module.exports = class Hyperdrive extends ReadyResource {
     folder = std(folder || '/', true)
 
     const ignore = opts.ignore ? normalizeIgnore(opts.ignore) : null
-    const stream = opts && opts.recursive === false ? shallowReadStream(this.db, folder, false, ignore) : this.entries(prefixRange(folder), { ignore })
+    const stream = opts && opts.recursive === false ? shallowReadStream(this.db, folder, false, ignore, opts) : this.entries(prefixRange(folder), { ignore, ...opts })
     return stream
   }
 
-  readdir (folder) {
+  readdir (folder, opts) {
     folder = std(folder || '/', true)
-    return shallowReadStream(this.db, folder, true, null)
+    return shallowReadStream(this.db, folder, true, null, opts)
   }
 
   mirror (out, opts) {
@@ -622,7 +622,7 @@ module.exports = class Hyperdrive extends ReadyResource {
   }
 }
 
-function shallowReadStream (files, folder, keys, ignore) {
+function shallowReadStream (files, folder, keys, ignore, opts) {
   let prev = '/'
   let prevName = ''
 
@@ -631,7 +631,7 @@ function shallowReadStream (files, folder, keys, ignore) {
       let node = null
 
       try {
-        node = await files.peek(prefixRange(folder, prev), { keyEncoding })
+        node = await files.peek(prefixRange(folder, prev), { keyEncoding, ...opts })
       } catch (err) {
         return cb(err)
       }