Switch file watcher to stop use polling; bump vscode to 1.66.0 (#1945)

- Fixes #1808
- Fixes #1846

## Checklist

- [-] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [-] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [-] I have not broken the cheatsheet

packages/cursorless-vscode-e2e/package.json

@@ -29,7 +29,7 @@
     "@types/lodash": "4.14.181",
     "@types/mocha": "^8.0.4",
     "@types/sinon": "^10.0.2",
-    "@types/vscode": "~1.61.0",
+    "@types/vscode": "~1.66.0",
     "chai": "^4.3.6",
     "js-yaml": "^4.1.0",
     "mocha": "^10.2.0",

packages/cursorless-vscode/package.json

@@ -29,7 +29,7 @@
   },
   "homepage": "https://www.cursorless.org/",
   "engines": {
-    "vscode": "^1.61.0"
+    "vscode": "^1.66.0"
   },
   "extensionKind": [
     "ui",
@@ -1069,7 +1069,7 @@
     "@types/sinon": "^10.0.2",
     "@types/tinycolor2": "1.4.3",
     "@types/uuid": "^8.3.4",
-    "@types/vscode": "~1.61.0",
+    "@types/vscode": "~1.66.0",
     "chai": "^4.3.6",
     "esbuild": "^0.17.11",
     "fast-xml-parser": "^4.2.5",

packages/cursorless-vscode/src/ide/vscode/VscodeFileSystem.ts

@@ -1,52 +1,17 @@
-import {
-  Disposable,
-  FileSystem,
-  PathChangeListener,
-  walkFiles,
-} from "@cursorless/common";
-import { stat } from "fs/promises";
-import { max } from "lodash";
+import { Disposable, FileSystem, PathChangeListener } from "@cursorless/common";
+import { RelativePattern, workspace } from "vscode";
 
 export class VscodeFileSystem implements FileSystem {
   watchDir(path: string, onDidChange: PathChangeListener): Disposable {
-    // Just poll for now; we can take advantage of VSCode's sophisticated
-    // watcher later. Note that we would need to do a version check, as VSCode
-    // file watcher is only available in more recent versions of VSCode.
-    return new PollingFileSystemWatcher(path, onDidChange);
-  }
-}
-
-const CHECK_INTERVAL_MS = 1000;
+    // FIXME: Support globs?
+    const watcher = workspace.createFileSystemWatcher(
+      new RelativePattern(path, "**"),
+    );
 
-class PollingFileSystemWatcher implements Disposable {
-  private maxMtimeMs: number = -1;
-  private timer: NodeJS.Timer;
-
-  constructor(
-    private readonly path: string,
-    private readonly onDidChange: PathChangeListener,
-  ) {
-    this.checkForChanges = this.checkForChanges.bind(this);
-    this.timer = setInterval(this.checkForChanges, CHECK_INTERVAL_MS);
-  }
-
-  private async checkForChanges() {
-    const paths = await walkFiles(this.path);
-
-    const maxMtime =
-      max(
-        (await Promise.all(paths.map((file) => stat(file)))).map(
-          (stat) => stat.mtimeMs,
-        ),
-      ) ?? 0;
-
-    if (maxMtime > this.maxMtimeMs) {
-      this.maxMtimeMs = maxMtime;
-      this.onDidChange();
-    }
-  }
+    watcher.onDidChange(onDidChange);
+    watcher.onDidCreate(onDidChange);
+    watcher.onDidDelete(onDidChange);
 
-  dispose() {
-    clearInterval(this.timer);
+    return watcher;
   }
 }

packages/cursorless-vscode/src/ide/vscode/hats/VscodeHatRenderer.ts

@@ -414,10 +414,9 @@ function watchDir(
     new vscode.RelativePattern(path, `**/*${CURSORLESS_HAT_SHAPES_SUFFIX}`),
   );
 
-  return vscode.Disposable.from(
-    hatsDirWatcher,
-    hatsDirWatcher.onDidChange(onDidChange),
-    hatsDirWatcher.onDidCreate(onDidChange),
-    hatsDirWatcher.onDidDelete(onDidChange),
-  );
+  hatsDirWatcher.onDidChange(onDidChange);
+  hatsDirWatcher.onDidCreate(onDidChange);
+  hatsDirWatcher.onDidDelete(onDidChange);
+
+  return hatsDirWatcher;
 }

packages/vscode-common/package.json

@@ -15,7 +15,7 @@
     "@cursorless/common": "workspace:*"
   },
   "devDependencies": {
-    "@types/vscode": "~1.61.0"
+    "@types/vscode": "~1.66.0"
   },
   "types": "./out/index.d.ts",
   "exports": {