Fix a few thing with compose

src/functions/parse.ts

@@ -4,6 +4,7 @@ import { SerializationFormats } from "./baseDefinitions";
 
 export function parse(
     format: SerializationFormats = SerializationFormats.utf8,
+    emitError: boolean = true,
 ): Transform {
     const decoder = new StringDecoder(format);
     return new Transform({
@@ -13,9 +14,13 @@ export function parse(
             try {
                 const asString = decoder.write(chunk);
                 // Using await causes parsing errors to be emitted
-                callback(undefined, await JSON.parse(asString));
+                callback(null, await JSON.parse(asString));
             } catch (err) {
-                callback(err);
+                if (emitError) {
+                    callback(err);
+                } else {
+                    callback();
+                }
             }
         },
     });