React with TypeScript

-

     I've had quite a time trying to code things in TypeScript with React, somehow I thought it would have been so much simpler. This is a blog about my experience as I learn, so I won't be afraid to admit that I've had a difficult time trying to build a relatively simple program in React using TypeScript. Many things are very similar to classic JavaScript, but I've especially had a hard time trying to get data from an API. Currently, every time I make my API call I get errors relating to how a promise is unfulfilled. I am awaiting my response and getting it's data before I do anything with it, but it seems like the await doesn't actually do anything at all.

    I am trying to rebuild the simple GitHub Cards app that I built while I was learning React. In React I never had any issues with promise fulfillment, since the awaits seemed to work exactly as I expected. With TypeScript, it took me a while to figure out how to pass a function down to a component. Finally I figured that out and more things started clicking (correctly assigning types to variables was helpful), but when I finally had something put together that would display on my screen, I went to test it and got my
"Uncaught (in promise) Error: Request aborted" error.

    I plan to make a new blog entry when I resolve this error, I have some friends I can ask to put some new eyes on my issue, and I may need to read deeper into the only real React-TypeScript book I know of. For now, you can check out the code here.

Comments

Post a Comment

Popular posts from this blog

API's in C#

-
      There is a lot here to take screen shots, but the code is all on my GitHub here if you'd like to follow along with this post.       My wife teaches sixth grade, and lately I've been thinking about an application I could build her to help manager her classroom and motivate the students to improve on the skills they've been struggling with. The concept is to turn a classroom into a game of Dungeons & Dragons, except the skills are in things like math and reading. Students would answer questions instead of rolling dice, and can then add their skills to their results so they can earn experience and rewards. Originally I was going to build this in FastAPI but I thought .NET Core would be better for setting up models and working with a database.     I started by setting up my models in a shared class library project, and I added a Classroom class for tracking classes of students, a Student class for tracking the stats of students and a Logs class to keep track of how a
Read more

Using WebRTC to build a videophone in React and TypeScript

-
 Recently I had the opportunity to spend more time learning React, as well as Redux and a bit about WebRTC. I was prototyping a website that allows you to make video calls to other users, and I thought it was really cool how out-of-the-box WebRTC is. I also used TypeScript, even though I had some trouble in the past with React-TypeScript applications, and it went pretty well. There was some finicky things and it required me to learn the types of objects I had never used before, but overall I think it went pretty well.   The server is built with express, and uses socket.io to emit the web-rtc requests. There is no authentication or authorization, I was mainly focused on showing that I could make a video call.It uses Redux to handle state management, which was a bit tricky in TypeScript and felt like I was writing a lot of repeat code, but it got the job done better than it would have without it. Ultimately this project ended up being put on the backburner as my team turned to Flutter in
Read more

Reviewing WPF and MVVM

-
Image
 I've been working in WPF (Windows Presentation Foundation) a lot lately. WPF is a great way to build a Windows desktop application, it's been around for many years and is very mature compared to UWP (Universal Windows Platform) which is a similar tool for creating desktop applications. It's not the newest, shiniest tool but it is definitely a great tool to be aware of. A while back I built a simple WPF program that worked with a .NET function library that did very simple distance calculations, and I decided to review that before really getting into more advanced concepts. When the program runs, it looks like this:   It's nothing too fancy, but it will show travel time, rate of travel and distance traveled over time. It also allows an excel spreadsheet to be inputted and it will run many calculations and then update the spreadsheet. The layout here is primarily built using the XAML grid, a staple of any WPF application. The grid specifies how many rows and columns the g
Read more