fix(fs): writeFile create file by default (#2846)

Legend-Master · web-flow · commit 44a1f659125a · 2025-07-15T09:46:43.000+08:00
diff --git a/.changes/write-readable-stream-create.md b/.changes/write-readable-stream-create.md
@@ -0,0 +1,6 @@
+---
+fs: patch
+fs-js: patch
+---
+
+Fix `writeFile` doesn't create a new file by default when the data is a `ReadableStream`
diff --git a/plugins/fs/api-iife.js b/plugins/fs/api-iife.js
diff --git a/plugins/fs/guest-js/index.ts b/plugins/fs/guest-js/index.ts
@@ -1074,7 +1074,7 @@ async function writeFile(
   }
 
   if (data instanceof ReadableStream) {
-    const file = await open(path, options)
+    const file = await open(path, { create: true, ...options })
     const reader = data.getReader()
 
     try {

Original file line number	Diff line number	Diff line change
`@@ -1074,7 +1074,7 @@ async function writeFile(`
`1074`	`1074`	`}`
`1075`	`1075`
`1076`	`1076`	`if (data instanceof ReadableStream) {`
`1077`		`- const file = await open(path, options)`
	`1077`	`+ const file = await open(path, { create: true, ...options })`
`1078`	`1078`	`const reader = data.getReader()`
`1079`	`1079`
`1080`	`1080`	`try {`