diff --git a/lib/podlet-stream.js b/lib/podlet-stream.js
index 952f5bbc..9d818014 100644
--- a/lib/podlet-stream.js
+++ b/lib/podlet-stream.js
@@ -47,12 +47,11 @@ export class PodletStream extends EventEmitter {
         let assets = new Map();
         /** @type {Map<string, string[]>} */
         let contents = new Map();
-        /** @type {Map<string, boolean>} */
-        let done = new Map();
 
         let didEmitBeforeStream = false;
         /** @type {string[]} */
         let queue = [];
+        let done = 0;
 
         for (let podlet of podlets) {
             podlet
@@ -101,12 +100,14 @@ export class PodletStream extends EventEmitter {
                         do {
                             let toEmit = queue.pop();
                             this.emit('data', toEmit);
+                            done += 1;
                         } while (queue.length !== 0);
                     }
 
                     this.emit('data', toEmit);
+                    done += 1;
 
-                    if (done.size === podlets.length) {
+                    if (done === podlets.length) {
                         this.emit('end');
                     }
                 });