doc: fix stream example

- Un-break the code for multibyte characters - Get `fs.createReadStream` from the right module PR-URL: #33426 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Gus Caplan <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
nodejs · May 16, 2020 · 8f91338 · 8f91338
1 parent 8ada953
commit 8f91338
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/doc/api/stream.md b/doc/api/stream.md
@@ -1666,14 +1666,15 @@ The `pipeline` API also supports async generators:
 
 ```js
 const pipeline = util.promisify(stream.pipeline);
-const fs = require('fs').promises;
+const fs = require('fs');
 
 async function run() {
   await pipeline(
     fs.createReadStream('lowercase.txt'),
     async function* (source) {
+      source.setEncoding('utf8');  // Work with strings rather than `Buffer`s.
       for await (const chunk of source) {
-        yield String(chunk).toUpperCase();
+        yield chunk.toUpperCase();
       }
     },
     fs.createWriteStream('uppercase.txt')