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Warning when calling toast functions

See original GitHub issue

When I call toast.error(“test”) i got the following warning on console:

Warning: Unsafe legacy lifecycles will not be called for components using new component APIs.

TransitionGroup uses getDerivedStateFromProps() but also contains the following legacy lifecycles:
  componentWillMount
  componentWillReceiveProps

The above lifecycles should be removed. Learn more about this warning here:
https://fb.me/react-async-component-lifecycle-hooks

Issue Analytics

State:
Created 5 years ago
Comments:7 (3 by maintainers)

Top GitHub Comments

1reaction

fkhadracommented, Aug 2, 2018

Hello @heamaral,

Since React 16.3 componentWillMount and componentWillReceiveProps are ‘deprecated’ in favor of getDerivedStateFromProps and getSnapshotBeforeUpdate.

I need to update react-transition-group from 2.2 to 2.4. Those warning only appear during development, so don’t worry for the moment.

The next release is scheduled for this month.

More detail about react lifecycle here

0reactions

develo-peracommented, Oct 11, 2018

react-transition-group package is where this error comes from

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