chokidar fires "add" and "addDir" events on first watching a directory but not on re-watching a directory.

[george-thomas-hill]

Describe the bug

When chokidar first watches a directory, it very helpfully emits "add" and "addDir" events for each file and folder in that directory.

However, if you unwatch that directory and then re-watch it, chokidar does not emit the expected "add" and "addDir" events for the files and folders in that directory.

Versions (please complete the following information):

• Chokidar version 3.5.2
• Node version 16.11.0
• OS version: Kubuntu 21.04

To Reproduce:

index.js:

let chokidar = require('chokidar');
const directory = "/home/georgehill/Dropbox/test1";
const options = {
    disableGlobbing: true,
    depth: 0,
};
let watcher = chokidar.watch(directory, options);
watcher.on('all', handleAll);
function handleAll(event, path) {
    console.log(`${event}: ${path}`);
}
watcher.on("ready", handleReady);
async function handleReady() {
    console.log("Ready!");
    await watcher.unwatch(directory);
    console.log("Unwatched!");
    watcher.add(directory);
    console.log("Re-watched!");
}

Simulated console output:

$ ls /home/georgehill/Dropbox/test1/
 folder1  'New Folder'      'New Folder (2)'  'New Folder (4)'     'Text File.txt'
 folder2  'New Folder (1)'  'New Folder (3)'  'Text File (1).txt'

$ node index.js 
addDir: /home/georgehill/Dropbox/test1
add: /home/georgehill/Dropbox/test1/Text File (1).txt
add: /home/georgehill/Dropbox/test1/Text File.txt
addDir: /home/georgehill/Dropbox/test1/New Folder
addDir: /home/georgehill/Dropbox/test1/New Folder (1)
addDir: /home/georgehill/Dropbox/test1/New Folder (2)
addDir: /home/georgehill/Dropbox/test1/New Folder (3)
addDir: /home/georgehill/Dropbox/test1/New Folder (4)
addDir: /home/georgehill/Dropbox/test1/folder1
addDir: /home/georgehill/Dropbox/test1/folder2
Ready!
Unwatched!
Re-watched!
addDir: /home/georgehill/Dropbox/test1
^C

Expected behavior

I expected that, upon re-watching the directory, chokidar would emit an "add" or an "addDir" event for each file/folder in the directory.

Instead, chokidar only emitted a single "addDir" event corresponding to the directory being rewatched.

[gavr123456789]

Peek.2022-02-08.03-46.mp4

I ran into the same problem when I tried to write a file browser. The re-watch of the directory does not trigger the addition events that I rely on when adding items to the list.
Linux: arch
chokidar: @3.5.3
node: v17.3.0

PS duplicates of the folder that was unwatched are also added

[KrazyTako]

I am also seeing this issue. My work around at the moment is recreating the entire file system watcher in order to properly trigger the initial watch event. I have a similar UI to @gavr123456789 where the user is able to remove/add directories to watch. If they remove an existing directory and then re-add it, it will not trigger the initial file add events.