Tests

src/functions/baseFunctions.ts

@@ -19,4 +19,4 @@ export { replace } from "./replace";
 export { split } from "./split";
 export { stringify } from "./stringify";
 export { unbatch } from "./unbatch";
-export { compose, composeDuplex } from "./compose";
+export { compose } from "./compose";

src/functions/compose.ts

@@ -2,7 +2,6 @@ import {
     pipeline,
     Transform,
     Writable,
-    Pipe,
     WritableOptions,
     Readable,
     Duplex,
@@ -12,7 +11,6 @@ import {
  * Return a Readable stream of readable streams concatenated together
  * @param streams Readable streams to concatenate
  */
-
 // First Readable --> Readable
 // First Transform | Duplex, Last Writable --> Writable
 //
@@ -22,26 +20,23 @@ export function compose(
 ): Duplex {
     // Maybe just return a new stream here
     if (streams.length < 2) {
-        throw new Error("Not enough");
+        throw new Error("At least two streams are required to compose");
     }
 
+    const first = streams[0] as Writable;
+    const last = streams[streams.length - 1] as Readable;
     const duplex = new Duplex({
-        objectMode: true,
+        ...options,
         write(chunk, enc, cb) {
-            const first = streams[0] as Writable;
             if (!first.write(chunk)) {
-                first.on("drain", cb);
+                first.once("drain", cb);
             } else {
                 cb();
             }
         },
         read(size) {
-            let chunk;
-            while (
-                null !==
-                (chunk = (streams[streams.length - 1] as Readable).read())
-            ) {
-                this.push(chunk);
+            if (last.readable) {
+                this.push(last.read(size));
             }
         },
     });

src/functions/index.ts

@@ -297,9 +297,3 @@ export function compose(
         options,
     );
 }
-export function composeDuplex(
-    streams: Array<Writable | Transform>,
-    options?: WritableOptions,
-) {
-    return baseFunctions.composeDuplex(streams, options);
-}

src/index.ts

@@ -22,5 +22,4 @@ export {
     accumulator,
     accumulatorBy,
     compose,
-    composeDuplex,
 } from "./functions";