Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'tick')

[brunocalou]

Describe the bug

Sometimes when I perform fast actions, Svelte throws a TypeError exception and stops working. The state never gets updated again and a page refresh is needed.

From the debugger, It happens on the create_out_transition function. The tick property cannot be accessed because config object is undefined.

Reproduction

https://svelte.dev/repl/a319a067d66e4b26b677ae94db22261c?version=3.31.0

Click on the "Move fast" button many times. It will eventually break.

Logs

Error: Uncaught (in promise): Cannot read properties of undefined (reading 'tick')
message: "Uncaught (in promise): Cannot read properties of undefined (reading 'tick')"
stack: "TypeError: Cannot read properties of undefined (reading 'tick')\n" +
" at Object.end (eval at handle_message (about:srcdoc:14:8), <anonymous>:487:37)\n" +
" at eval (eval at handle_message (about:srcdoc:14:8), <anonymous>:981:40)\n" +
" at flush (eval at handle_message (about:srcdoc:14:8), <anonymous>:306:21)"

System Info

System:
    OS: macOS 11.6.1
    CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
    Memory: 2.31 GB / 16.00 GB
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 16.14.0 - ~/.nvm/versions/node/v16.14.0/bin/node
    npm: 8.3.1 - ~/.nvm/versions/node/v16.14.0/bin/npm
  Browsers:
    Brave Browser: 104.1.42.97
    Chrome: 105.0.5195.125
    Firefox: 103.0.2
    Safari: 14.1.2
  npmPackages:
    svelte: ^3.50.1 => 3.50.1

Severity

annoyance

[brunocalou]

I can open a PR on the weekend 👍

[amjadorfali]

I'm having a similar issue with the out transition.

I'm basically using a Media Query to show a different Menu (one for mobile and one for desktop)

The desktop version has a menu with some animations, including an out animation.

The issue is basically when the component is trying to call out, when it's being unmounted, it's throwing this tick error.

Any ideas when it would be fixed ?

This is making both menus crash and disappear completely, unless i refresh

[baseballyama]

Error: Uncaught (in promise): Cannot read properties of undefined (reading 'tick')
This issue is fixed since 3.40.3 by this PR #6516

Then sometimes 3.40.3 occur below error.
Error: Cannot read properties of null (reading 'removeChild')
But it has also been fixed since 3.53.0.
#6910