macOS: Error starting FSEvents stream with many folders #190
Description
It seems there is a maximum of folders that can be watched. Anywhere from 500 paths, I see an false return from the call to FSEventStreamStart.
~/Desktop/parcel-test> node index.js
node:internal/process/promises:391
triggerUncaughtException(err, true /* fromPromise */);
^
[Error: Error starting FSEvents stream]
Node.js v20.17.0
I was not able to figure out where this limit is coming from so far.
Code to reproduce:
const watcher = require('@parcel/watcher');
const path = require('path');
const fs = require('fs');
async function main() {
for (let i = 0; i < 1000; i++) {
const dirPath = path.join(process.cwd(), `folder_${i}`);
fs.mkdirSync(dirPath, { recursive: true });
const filePath = path.join(dirPath, `file_${i}.txt`);
fs.writeFileSync(filePath, `This is file ${i}`);
}
for (let i = 0; i < 1000; i++) {
const dirPath = path.join(process.cwd(), `folder_${i}`);
let subscription = await watcher.subscribe(dirPath, (err, events) => {
console.log(events);
});
}
}
main();