"Invalid Keypath" error when editing FieldArray after submit has failed.

[dagstuan]

Are you submitting a bug report or a feature request?

Bug report

What is the current behavior?

https://codesandbox.io/s/MPzRZV21

If you submit the form, and then (after the submit has failed) try to add/delete members and edit their fields. An "Invalid KeyPath" error will be logged to the console. This is only while using the immutable.js-version of redux-form.

What is the expected behavior?

No "invalid keypath"-message

Other information

I have narrowed this problem down to the code for ArraySplice which inserts undefined into the state for submitErrors and asyncErrors. When editing one of the fields inside a FieldArray the code deleteInWithCleanUp(result, submitErrors.${field}) is called, which tries to update the submit errors for the field inside the array, however, the array element is set to "undefined" in the state, and a call to immutable.js such as state.updateIn(['form', 'formName', 'submitErrors', '0', 'fieldName'], /* rest */) fails with the "Invalid KeyPath" error.

[erikras]

Published fix as v6.7.0.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.