Animated.WithAnimatedValue strips type information

[cjduncana]

Description

I'm starting to use the Animated library for React Native, and I already noticed that the compiler is not warning me of the wrong usage. Usually, style properties would alert me if I give it the incorrect value, but when I use Animated.WithAnimatedValue for components like Animated.Text, I noticed this doesn't happen anymore. For example, I see that when I use Animated.WithAnimatedValue, it turns any type T that is not a record or an array into T | Value | AnimatedInterpolation. When I use the style property color that has type string | undefined, I would expect that the new type would be string | undefined | Value | AnimatedInterpolation, instead it is any. Any suggestions?

React Native version:

System:
OS: macOS Mojave 10.14.6
CPU: (8) x64 Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
Memory: 126.48 MB / 16.00 GB
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 11.12.0 - ~/.nvm/versions/node/v11.12.0/bin/node
Yarn: 1.17.3 - ~/.yarn/bin/yarn
npm: 6.14.4 - ~/.nvm/versions/node/v11.12.0/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
Managers:
CocoaPods: 1.8.4 - /Users/User/.rvm/rubies/ruby-2.6.5/bin/pod
SDKs:
iOS SDK:
Platforms: iOS 13.2, DriverKit 19.0, macOS 10.15, tvOS 13.2, watchOS 6.1
Android SDK:
API Levels: 28, 29
Build Tools: 28.0.3, 29.0.2
System Images: android-28 | Google APIs Intel x86 Atom, android-28 | Google Play Intel x86 Atom
Android NDK: Not Found
IDEs:
Android Studio: 3.5 AI-191.8026.42.35.6010548
Xcode: 11.3.1/11C504 - /usr/bin/xcodebuild
Languages:
Java: 1.8.0_222 - /usr/bin/javac
Python: 2.7.16 - /usr/bin/python
npmPackages:
@react-native-community/cli: Not Found
react: ^16.11.0 => 16.11.0
react-native: ^0.62.2 => 0.62.2
npmGlobalPackages:
react-native: Not Found

Expected Results

TypeScript should warn the user when they give a style property the wrong type.

Snack, code example, screenshot, or link to a repository:

Example without WithAnimatedValue

Example with WithAnimatedValue

[stale]

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require the community's attention? This issue may be closed if no further activity occurs. You may also label this issue as a "Discussion" or add it to the "Backlog" and I will leave it open. Thank you for your contributions.

[cjduncana]

@cruzach I'm not sure of what does the Issue: Author Provided Repro stands for. Should I provide any other information? The bot recently labeled this ticket as stale. Does that mean that this issue will not be resolved or that there's no interest in resolving the issue?

[stale]

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require the community's attention? This issue may be closed if no further activity occurs. You may also label this issue as a "Discussion" or add it to the "Backlog" and I will leave it open. Thank you for your contributions.

[github-actions]

This issue is stale because it has been open 180 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This issue was closed because it has been stalled for 7 days with no activity.