- Version: v15.4.0
- Platform: MacOS V10.15.7
- Subsystem: lib/events.js
What steps will reproduce the bug?
const EventEmitter = require('events');
const ee = new EventEmitter();
// const symbol = Symbol('listener');
const symbol = 'listener';
const fn2 = function(...args) {
console.log('Call fn2', ...args)
};
const fn = function (...args) {
console.log('Call fn', ...args);
};
fn[symbol] = fn2;
ee.on('one', fn2)
ee.on('one', fn);
ee.emit('one');
// Prints:
// Call fn2
// Call fn
console.log('1. remove fn2')
ee.removeListener('one', fn2); // fn is removed, expect remove the fn2
ee.emit('one');
// Prints:
// Call fn2
console.log('2. remove fn2 again')
ee.removeListener('one', fn2) // fn2 is removed
ee.emit('one')
// Prints:
// Call fn2
console.log('3. remove fn2 again');
ee.emit('one')How often does it reproduce? Is there a required condition?
Occurs every time.
What is the expected behavior?
Call fn2
Call fn
1. remove fn2
Call fn
2. remove fn2 again
Call fn
3. remove fn2 again
Call fn
What do you see instead?
Call fn2
Call fn
1. remove fn2
Call fn2
2. remove fn2 again
3. remove fn2 again
Additional information
Replace the listener attribute of event listener with symbol
What steps will reproduce the bug?
How often does it reproduce? Is there a required condition?
Occurs every time.
What is the expected behavior?
What do you see instead?
Additional information
Replace the listener attribute of event listener with symbol