Typescript optional chaining error: Expression expected.ts(1109)
I am trying to do optional chaining in Typescript + React Native.Let's say I have the following interfaces:interface Bar { y: number}interface Foo { x?: Bar}and I try to run the following: const test:...
View ArticleTS, React Native | Converting string to date gives NaN but works on console...
Facing a strange issue wherein my react-native (with TypeScript) returns NaN for the following snippet but it works when I run the same snippet on a JS/TS consoleconst convertDateStringToSlotString =...
View ArticleTypeError: _fieldRef$current.blur is not a function
I used useRef& ref for a custom FieldInput component that contains <Input> from Native Base.const fieldRef = useRef();... const handleSubmitForm = ( values: FormValues, helpers:...
View ArticleReact Native: When I add isSignedIn ternary operator statement on...
I started learning React Native and doing something basic from React but it doesn't work and I can't find the problem.This is my code, and this is the error I get.It worked until I added the ternary...
View Articlecan't type in Input field after changing onChangeText
I have a custom FieldInput icon where I use Native Base's input component. I use it for validation with Formik. When I use it like this: onChangeText={handleChange(fieldType)}everything seems to work...
View ArticleUsing theme for styling in react native with typescript
I can use theme variable in makeStyles function and also I want to use theme variable in createStyles functionexport type NamedStyles<T> = { [P in keyof T]: ViewStyle | TextStyle | ImageStyle...
View ArticleReact Native: I want the app to navigate to "Home" after someone signed in
I want my app to navigate home after someone signed in, but it don't work it is because the roots didn't update. You can see here the App code to understand what I want to say.Which is the best way to...
View ArticleReact-Native custom Text component with Typescript : "Conversion of type...
I've been trying to implement the following custom Text component in React Native.import React from 'react';import { Text as RNText, TextStyle } from 'react-native';export interface TextProps {...
View Articlepass a function to a custom react hook
Previously, I was using a graphql query like this. The data is returned from the query and I use setShowFlatListwith the datareturned: const [loadUsers, { data }] = useUsersLazyQuery({ onCompleted: ()...
View Articletsdoc-param-tag-with-invalid-name: The @param block should be followed by a...
I'm using JSDoc and TSDoc for a React Native project with TypeScript. There is some strange behavior when documentings props.All @param: props.propName are underlined with...
View ArticleCheck an Image URL is valid
My goal is to check an image source url to check whether it is valid or not. If it is valid, display the React Native Image as normal and if not, replace it with a local placeholder image. However, the...
View ArticleExtends Console Interface for TypeScript
I would like to add an object in the window.console global.import Reactotron from 'reactotron-react-native';window.console.tron = Reactotron;Although when I do that, TypeScript complains about the new...
View ArticleKeep getting error: $.deferred is not a function
I've installed jquery and @types/jquery. I want to use jquery.Deferred() but when i try to use it I get error that "$.Deferred is not a function".import * as $ from "jquery";u// somewhere in codelet...
View ArticleThe props not changing the background button color
ObjectiveI am trying to switch the background color button if the off props are passed. Something like, if the button contains de off, the background color button will red and if not contains, the...
View ArticlePassing in a Function with Parameters into a Child Component in React Native...
I'm trying to pass the following function into a child component as a prop, along with a string parameter:navigateToDetailsPage(nasaId: string) { this.props.navigation.navigate('Details', { nasaId:...
View ArticleClik here to view.
React Native Vscode TypeScript debugger stepping extremely slow
I've got a few projects that use TypeScript (some with React, some with React Native), but for some reason, a particular React Native project started to get extremely slow while debugging. Here's an...
View ArticlesetState with a value from a different file
On my screen file, I run a graphql query and fetch data. I use setShowFlatListwith the data returned: const [showFlatList, setShowFlatList] = useState(''); .... const [loadUsers, { data }] =...
View ArticleNavigation Structure on React Native Typescript for Duplicate Page
I have the following navigation structure in my app.tsx file:const HomeStack = createStackNavigator<HomeStackParamList>()function HomeStackScreen() { return...
View ArticleUsing forwardRef with typescript and react native
I have Onboarding and Slider components. I want to pass prop scrollview's ref to slider component and using it in button to get next slider on screen const Onboarding = () => { const { width } =...
View ArticleThe device.servicesUUIDs out the then.catch print but inside the value is null
I am using the library react-native-ble-plx to connect Bluetooth using my application, but I need some values, when I log console.log(device) returns me any values, and I found the servicesUUIDs, it is...
View Article