I’m using React(react-create-app and TypeScript). Login is made with Auth0. I want to write tests with Jest, and I found this ressource which is basically the only thing around that speaks about Mocking the Auth0 object. So my code looks like this: But I end stuck with this error: Property ‘mockReturnValue’ does not exist on type ‘() => IAuth0Context |
Tag: javascript
Splitting array into groups using typescript/javascript
I have this: I need to restructure it to this: the hard part is that the number of objects in each group is set using a variable (in this example the variable would be 4). How can I achieve this using Typescript/Javascript? Its driving me mad! Thanks Answer Use Array.reduce() You can run a .reduce() method on your products array,
Ignore return outside of function with babel 7
I recently updated to babel 7 and webpack 4 and am receiving this error when running our gulp build task: This is caused by the return outside of a function in browser-syncs dev-ip dependency. Is there a way to configure my .babelrc file to ignore this? I’ve tried the following: Installing only production dependencies, but because browser sync is imported
TypeScript React.FC confusion
I am learning TypeScript and some bits are confusing to me. One bit is below: For both functional components above, I see TypeScript generates the same JS code. The PrintName2 component seems more streamlined to me as far as readability. I wonder what’s the difference between the two definitions and if anyone is using second type of React component? Answer
Why I can’t install React and uninstall create-react-app in my system?
I have tried so many ways. But I can’t find any solution. The problem is I can’t install ReactJS in my system. Here is the message I get when complete my installation process. A template was not provided. This is likely because you’re using an outdated version of create-react-app. Please note that global installs of create-react-app are no longer supported.
Why sometimes does the img jump in this Blackjack game
In this Blackjack game (https://schaulcode.github.io/blackjack/) written in javaScript sometimes when the cards get dealt the img jumps. it looks like the code gets executed faster the the browser can paint the picture. Interestingly this only happens online, during development when the whole program was locally on my machine this issue didn’t occur. Could anyone explain the reason behind it and
Get tests running time with Jest
Is there any way to know how long my tests take without doing it programmatically with Jest? To be clear, I know that if I add a variable to get the current time before each test and then log this when my test completes I’ll get this information, but I want this automatically, maybe with some Jest configuration. Answer You
How do I format JSON code in Monaco Editor with API?
I am working with monaco editor aka the VS Code engine in a web project. I am using it to allow users to edit some JSON that has a JSON Schema set, to help give some auto-completion. When they save their changes and wish to re-edit their work, the JSON that I load back into the editor is converted to
How can I render multiple elements after an inline condition using short circuit evaluation?
Using a short circuit evaluation in a functional component (with hooks): Is there a way to render multiple elements right after an inline if condition? Code above doesn’t work, react throws an error. options array is filled after a promise resolved from useEffect(). That’s why i’ve added this check, to display elements only when a promise resolved. UPDATED CODE for
Passing variables between functions by reference in Google Apps Script
I’m really new to Google Apps Script and just started a few days ago to learn it. I have previous knowledge in C++ but not more. I tried to write my first script doing some action on a google sheet. Here is the code I created so far: I realized that the value of LoopCounter is not changed, after being