Always return array from readBuffers

Author: linev

demo/node/file_proxy.js

@@ -92,11 +92,8 @@ class FileProxyPromise extends FileProxy {
 /** Class supporting multi-range requests */
 class FileProxyMultiple extends FileProxyPromise {
 
-   /** example of reading several segments at once */
+   /** example of reading several segments at once, always return array */
    async readBuffers(places) {
-      if (places.length === 2)
-         return this.readBuffer(places[0], places[1]);
-
       if (!this.fd)
          return Promise.resolve([]);
 

modules/io.mjs

@@ -3903,7 +3903,9 @@ class TProxyFile extends TFile {
          return Promise.reject(Error(`File is not opened ${this.fFileName}`));
 
       if (isFunc(this.proxy.readBuffers))
-         return this.proxy.readBuffers(place);
+         return this.proxy.readBuffers(place).then(arr => {
+            return arr?.length === 1 ? arr[0] : arr;
+         });
 
       if (place.length === 2)
          return this.proxy.readBuffer(place[0], place[1]);