🤖 Merge PR DefinitelyTyped#73616 feat(emscripten) : Update writeFile API by @R3gardless

Author: R3gardless

types/emscripten/emscripten-tests.ts

@@ -108,6 +108,16 @@ function FSTest(): void {
     FS.symlink("file", "link");
 
     FS.writeFile("/foobar.txt", "Hello, world");
+
+    // Test writeFile with extended options
+    FS.writeFile("/test-with-mode.txt", "content", { mode: parseInt("0644", 8) });
+    FS.writeFile("/test-with-flags.txt", "content", { flags: "w+" });
+    FS.writeFile("/test-with-canown.txt", "content", { canOwn: true });
+    FS.writeFile("/test-with-all-opts.txt", "content", {
+        flags: "w",
+        mode: parseInt("0755", 8),
+        canOwn: false,
+    });
     FS.unlink("/foobar.txt");
 
     FS.writeFile("file", "foobar");

types/emscripten/index.d.ts

@@ -336,7 +336,11 @@ declare namespace FS {
     function readFile(path: string, opts: { encoding: "binary"; flags?: string | undefined }): Uint8Array;
     function readFile(path: string, opts: { encoding: "utf8"; flags?: string | undefined }): string;
     function readFile(path: string, opts?: { flags?: string | undefined }): Uint8Array;
-    function writeFile(path: string, data: string | ArrayBufferView, opts?: { flags?: string | undefined }): void;
+    function writeFile(
+        path: string,
+        data: string | ArrayBufferView,
+        opts?: { flags?: string | undefined; mode?: number | undefined; canOwn?: boolean | undefined },
+    ): void;
 
     //
     // module-level FS code