inferno: TypeError: Cannot read property 'flags' of null

Inferno@3.3.1

Uncaught TypeError: Cannot read property 'flags' of null
    at patch (patching.js:15)
    at patchComponent (patching.js:338)
    at patch (patching.js:20)
    at patchKeyedChildren (patching.js:440)
    at patchChildren (patching.js:204)
    at patchElement (patching.js:88)
    at patch (patching.js:28)
    at patchComponent (patching.js:283)
    at patch (patching.js:20)
    at patchChildren (patching.js:195)

Details

Occurs only when component is updated. If I render component only once without updating it – no error occurs.
It involves a component which calls props.onNewValue inside a constructor (but only once, on the first construction).
I have a component with conditional children that are updated here. It is tricky to isolate, sorry.

About this issue

Original URL
State: closed
Created 7 years ago
Comments: 21 (12 by maintainers)

Most upvoted comments

The errors in this thread has been fixed. The original repro will not work in React either so there is something wrong in it. Inferno works same way as React so I’m closing this as working as intended now.

Here is React version behaving same way as Inferno: https://jsfiddle.net/2ukzrbwg/

Havunen on Sep 2, 2018

But I think I will just add those lifecycle methods for next release and new createRef API too

Havunen on Aug 24, 2018