You can't concat() TypedArrays...

Author: seanmorris

tools/file_packager.py

@@ -976,7 +976,6 @@ def generate_js(data_target, data_files, metadata):
             const chunks = [];
             const headers = response.headers;
             const total = Number(headers.get('Content-Length') ?? packageSize);
-
             let loaded = 0;
 
             const handleChunk = ({done, value}) => {
@@ -996,7 +995,12 @@ def generate_js(data_target, data_files, metadata):
                 Module['setStatus']?.(`Downloading data... (${totalLoaded}/${totalSize})`);
                 return iterate();
               } else {
-                const packageData = new Uint8Array([].concat(...chunks));
+                const packageData = new Uint8Array(chunks.map((c) => c.length).reduce((a, b) => a + b, 0));
+                let offset = 0;
+                for (const chunk of chunks) {
+                  packageData.set(chunk, offset);
+                  offset += chunk.length;
+                }
                 callback(packageData.buffer);
               }
             };