I have problem with prop-types. Warning message appear which said that children is object not a function. But when I change that in object I have problem with npm Lint. Which says that cannot be type of object. How to avoid this issue? Component code: Warrning message: Warning: Failed prop type: Invalid prop children of type object supplied to layout,
Tag: reactjs
How to import SVG into Next.js component?
I am trying to import an SVG image from file into a Next.js component. In the assets folder I have google.svg (icon): I need to import that SVG inside of this inside of the Next.js component: I installed this package: https://www.npmjs.com/package/next-images and set configuration based on that documentation in next.config.js: Why my import of SVG does not work? Answer Another
Why is useState not triggering re-render?
I’ve initialized a state that is an array, and when I update it my component does not re-render. Here is a minimal proof-of-concept: Based on this code, it seems that the input should contain the number 0 to start, and any time it is changed, the state should change too. After entering “02” in the input, the App component does
How to dynamically access nested errors/touched on formik Field
I am trying to create a React component to abstract away creating an Input group for my form. All inputs have the same layout – a Label, with the Input underneath and if errors/info text is present these are displayed under the Input. Previously I was handling my own form state/handlers. Now I am experimenting with formik (with Yup validation)
useMemo vs. useEffect + useState
Are there any benefits in using useMemo (e.g. for an intensive function call) instead of using a combination of useEffect and useState? Here are two custom hooks that work exactly the same on first sight, besides useMemo’s return value being null on the first render: useEffect & useState useMemo Both calculate the result each time their parameter someNumber changes, where
Render react Component from Map Object
In reactjs I’m trying to render a component from a Map object. More specifically, on the press of a button I create a new “FormRow” component, and I store it in a javascript Map object for convenience (because I’m gonna to use it later on). Whenever it happens, I want to render the new component just added, but I can’t
React router warning: Received `true` for a non-boolean attribute `exact`
I receive console warning during Buttons mapping with prop “exact”: Warning: Received true for a non-boolean attribute exact. If you want to write it to the DOM, pass a string instead: exact=”true” or exact={value.toString()}. I guess there are no mistakes in my code Answer Fixed it with template literal:
Polling with redux-saga
I tried to solve polling with the information on this page: https://bigbite.net/polling-with-redux/ The problem I have now is that I see in network that my service gets called too many times. It is called all the time. Should not my delay prevent it to call my fetchStuff in the next round inside while? Should it not wait for 30 sec
React Using useState/Hooks In HOC Causes Error “Hooks can only be called inside of the body of a function component”
Is it not allowed to use hooks inside of a Higher Order Component? When I try to do it with this simple pattern I’m getting the error Invalid hook call. Hooks can only be called inside of the body of a function component. Answer I believe you should use the hooks inside the HOC:
How to record web/browser audio output (not microphone audio)
Has anyone successfully been able to access the audio stream that is being outputted from the browser window (not from the microphone)? We are currently building a sound studio app where the user can play an instrument and we want to be able to record and save that audio as it is being generated. We have real-time audio output being