Fix.

node_modules/sane/index.js

@@ -0,0 +1,40 @@
+'use strict';
+
+const NodeWatcher = require('./src/node_watcher');
+const PollWatcher = require('./src/poll_watcher');
+const WatchmanWatcher = require('./src/watchman_watcher');
+const WatchexecWatcher = require('./src/watchexec_watcher');
+
+function throwNoFSEventsSupports() {
+  throw new Error('Sane >= 4 no longer support the fsevents module.');
+}
+
+function sane(dir, options) {
+  options = options || {};
+  if (options.watcher) {
+    const WatcherClass = require(options.watcher);
+    return new WatcherClass(dir, options);
+  } else if (options.poll) {
+    return new PollWatcher(dir, options);
+  } else if (options.watchman) {
+    return new WatchmanWatcher(dir, options);
+  } else if (options.watchexec) {
+    return new WatchexecWatcher(dir, options);
+  } else if (options.fsevents) {
+    throwNoFSEventsSupports();
+  } else {
+    return new NodeWatcher(dir, options);
+  }
+}
+
+module.exports = sane;
+sane.NodeWatcher = NodeWatcher;
+sane.PollWatcher = PollWatcher;
+sane.WatchmanWatcher = WatchmanWatcher;
+sane.WatchexecWatcher = WatchexecWatcher;
+
+Object.defineProperty(sane, 'FSEventsWatcher', {
+  get() {
+    return throwNoFSEventsSupports();
+  },
+});