fix: pipelines: add missing compression support for custom initializer

Signed-off-by: bigsaltyfishes <bigsaltyfishes@gmail.com>

Author: bigsaltyfishes

src/pipelines/rust/initializer.js

@@ -1,4 +1,4 @@
-async function __trunkInitializer(init, source, sourceSize, initializer, initWithObject) {
+async function __trunkInitializer(init, source, sourceSize, initializer, initWithObject, compressAlgorithm) {
   if (initializer === undefined) {
     return await init(initWithObject ? { module_or_path: source } : source);
   }
@@ -11,14 +11,20 @@ async function __trunkInitializer(init, source, sourceSize, initializer, initWit
 
   const response = fetch(source)
       .then((response) => {
-        const reader = response.body.getReader();
         const headers = response.headers;
         const status = response.status;
         const statusText = response.statusText;
 
         const total = sourceSize;
         let current = 0;
 
+        let reader = undefined;
+        if (compressAlgorithm) {
+          reader = response.body.pipeThrough(new DecompressionStream(compressAlgorithm)).getReader();
+        } else {
+          reader = response.body.getReader();
+        }
+
         const stream = new ReadableStream({
           start(controller) {
             function push() {

src/pipelines/rust/output.rs

@@ -187,13 +187,18 @@ const wasm = await init({init_arg});
 import init{import} from '{base}{js}';
 import initializer from '{base}{initializer}';
 
-const wasm = await __trunkInitializer(init, '{base}{wasm}', {size}, initializer(), {init_with_object});
+const wasm = await __trunkInitializer(init, '{base}{wasm}', {size}, initializer(), {init_with_object}{algorithm});
 
 {bind}
 {fire}
 </script>"#,
                 init = include_str!("initializer.js"),
                 size = self.wasm_size,
+                algorithm = if let Some(algorithm) = &self.compression_algorithm {
+                    format!(", '{algorithm}'")
+                } else {
+                    String::new()
+                },
             ),
         }
     }