FastField Support about formik-antd HOT 9 CLOSED

Y would be cool if FastField would be supported. However I think that usually using Field will be fast enough, especially in production builds (formik also got faster with recent versions).

As I didn't yet encounter performance issues (and "premature optimization is the root of all evil") I will be reluctant to focus on this topic (unless I hit performance problems).

Contributions would be very welcome. I think these components should be separated from the current ones (to not overload them with responsibilities). Introducing new components with a *Fast suffix could be an option. Also putting them as static components on existing ones, like <Input.Fast ... /> ?
Or if possible allow them to be imported from a subnamespace/submodule (not sure about the correct javascript terms) and just use the same names. Like

import { Input } from "..formik-antd/fast"

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I think this a great idea, I see performance issues with Formik when I have 25+ fields. Although I disagree it should be a separate component, why not make it a property on all existing components fast={true} and then use Field vs FastField in the component itself? Would reduce a lot of code duplication.

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Your approach looks reasonable to me. Feel free to open a PR.

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@jannikbuschke I think subnamespace will be good option. I can work on the PR.

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@babbarankit I recently noticed that any exported component is available like import { Component } from "@jbuschke\formik-antd\lib\path-to-component

This is what you mean or?

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Do you see performance problems in debug mode or with your production build?

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I see problems in production build. I have ~ 30 fields in my form across several pages.

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Hi @jannikbuschke, I'm having problems without fast field too, at my company we're trying to go prod asap, so I made a fork and implemented a wrapper for Formik Field with a fastMode support...
I'm starting now in open source, if u have time, check my fork implementation and if its ok I can send a PR fixing it.

Field with fast mode support implementation

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FastField support is available in v1.9.0-beta.0
https://github.com/jannikbuschke/formik-antd#fastfield-support

Any feedback is appreciated!

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