fix(app): update tab file contents on change

packages/app/src/context/file/watcher.test.ts

@@ -27,6 +27,37 @@ describe("file watcher invalidation", () => {
     expect(refresh).toEqual(["src"])
   })
 
+  test("reloads files that are open in tabs", () => {
+    const loads: string[] = []
+
+    invalidateFromWatcher(
+      {
+        type: "file.watcher.updated",
+        properties: {
+          file: "src/open.ts",
+          event: "change",
+        },
+      },
+      {
+        normalize: (input) => input,
+        hasFile: () => false,
+        isOpen: (path) => path === "src/open.ts",
+        loadFile: (path) => loads.push(path),
+        node: () => ({
+          path: "src/open.ts",
+          type: "file",
+          name: "open.ts",
+          absolute: "/repo/src/open.ts",
+          ignored: false,
+        }),
+        isDirLoaded: () => false,
+        refreshDir: () => {},
+      },
+    )
+
+    expect(loads).toEqual(["src/open.ts"])
+  })
+
   test("refreshes only changed loaded directory nodes", () => {
     const refresh: string[] = []
 

packages/app/src/context/file/watcher.ts

@@ -8,6 +8,7 @@ type WatcherEvent = {
 type WatcherOps = {
   normalize: (input: string) => string
   hasFile: (path: string) => boolean
+  isOpen?: (path: string) => boolean
   loadFile: (path: string) => void
   node: (path: string) => FileNode | undefined
   isDirLoaded: (path: string) => boolean
@@ -27,7 +28,7 @@ export function invalidateFromWatcher(event: WatcherEvent, ops: WatcherOps) {
   if (!path) return
   if (path.startsWith(".git/")) return
 
-  if (ops.hasFile(path)) {
+  if (ops.hasFile(path) || ops.isOpen?.(path)) {
     ops.loadFile(path)
   }