[0.62.0-rc.1] Vibration.vibrate has unspecified nullability on iOS

Description:

• Vibration.vibrate() errors on iOS on 0.62.0-rc.1. Looks like something to do with TurboModules.

• Error: Argument 0 (NSNumber) of Vibration.vibrate has unspecified nullability but React requires that all NSNumber arguments are explicitly marked as ‘nonnull’ to ensure compatibility with Android.

React Native version:

System:
    OS: macOS Mojave 10.14.6
    CPU: (8) x64 Intel(R) Core(TM) i7-6920HQ CPU @ 2.90GHz
    Memory: 1014.98 MB / 16.00 GB
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 13.6.0 - /usr/local/bin/node
    npm: 6.13.4 - /usr/local/bin/npm
    Watchman: 4.9.0 - /usr/local/bin/watchman
  SDKs:
    iOS SDK:
      Platforms: iOS 13.2, DriverKit 19.0, macOS 10.15, tvOS 13.2, watchOS 6.1
  IDEs:
    Xcode: 11.3.1/11C504 - /usr/bin/xcodebuild
  npmPackages:
    react: 16.11.0 => 16.11.0 
    react-native: 0.62.0-rc.1 => 0.62.0-rc.1 
  npmGlobalPackages:
    react-native-cli: 2.0.1

Steps To Reproduce

Vibration.vibrate(1);

Expected Results

Error-free vibration.

[brunobar79]

@hramos I can reproduce on v0.62 rc1 and it doesn’t matter if I call it with a number as a param or without parameter, which makes sense because of it’s being called without params for iOS here

@trevyn is right about this being related to TurboModules. The problem is that numbers are not supported as nullable arguments in functions,

Just submitted a PR to fix the issue: https://github.com/facebook/react-native/pull/27951

[dsernst]

Still seeing this in react-native@0.62.0 in iOS.

To reproduce on a fresh build:

import React from 'react'
import { Vibration, Button } from 'react-native'

const Example = () => <Button onPress={() => Vibration.vibrate()} title="Push me to crash" />
)

Results in:

Expected:

Would expect this simple Vibration.vibrate() call to work, per the first example from the docs.

---

Looks like the suggested PR (https://github.com/facebook/react-native/pull/27951) has status Waiting on Facebook?

Is there anything we can do to help? 🙂