Use polyfill when TextDecoderStream isn't available

Author: mattt

integration/bun/index.ts

@@ -8,7 +8,7 @@ export default async function main() {
   const model = "meta/llama-2-70b-chat";
   const options = {
     input: {
-      prompt: "Write a poem about steam buns",
+      prompt: "Write a haiku about steam buns",
     },
   };
   const output = [];

lib/stream.js

@@ -4,6 +4,10 @@ const ApiError = require("./error");
 const {
   EventSourceParserStream,
 } = require("../vendor/eventsource-parser/stream");
+const { TextDecoderStream } =
+  typeof global.TextDecoderStream === "undefined"
+    ? require("../vendor/streams-text-encoding/text-decoder-stream")
+    : global;
 
 /**
  * A server-sent event.