React-jsonschema-form: Perf waste

[vinhlh]

Prerequisites

• [x] I have read the documentation;
• [x] In the case of a bug report, I understand that providing a SSCCE example is tremendously useful to the maintainers.

Description

When I am working with object field with multiple sub-fields, then updating a field,
Example: Change Chunk to Chuck test blah blah record blah blah
it creates a lot of waste rerender.

If the form has more fields, and this cost will be much higher.

Steps to Reproduce

1. Install react-addons-perf and import Perf from 'react-addons-perf'
2. In playground, select tab Ordering
3. Start Profiling.
4. Change First name from Chunk to Chuck test blah blah record blah blah.
5. Stop Profiling and see the results.

Expected behavior

So reduce these waste costs.

Actual behavior

Raise a lot of waste calculations.

Version

0.40.0

[n1k0]

This is indeed a shame. Would you want to work investigating this?

[n1k0]

Could you please test latest master now #480 has landed? I bet it drastically improves the situation you describe here.

[vinhlh]

Not test yet, but it seems the PR could solve the problem @n1k0

[n1k0]

489 is gonna drastically improve perfs as well methinks.