Very open ended, apologies in advance.
I've been going through the docs and searching google incessantly, but I'm wondering what steps I would need to take to use react with a non-browser JavaScript environment.
Some context on the environment:
The environment uses JavaScript to run a UI, it has http capabilities.
There is no html, css, document, window, HTMLElement, etc.
The environment does have the notion of a hierarchy, changes to the object hierarchy in JS cross the bridge and trigger a render through a graphics platform like OpenGL for instance. The environment does get input via keys and or a mouse.
If there's a roadmap to do this or something like an architecture diagram to refer to, that'd be fantastic.
Any help/advice is appreciated.
thanks in advance,
-dylan
ReactJS work with DOM, so environment need to have DOM structure, that means no HTML no DOM. Or you can use server render of React component, but you will get a string as result.
Read more here:
React.renderComponentToString
Related
I have a react js app built long time ago that uses 3rd party libraries and APIs, now I want to add this app to saleforce. Is there a way to add the existing react js app or do I have to build a new app using the saleforce development tools? Any advise and help is appreciated.
Can you live in an iframe? There's lightning:container tag that could help you. Search questions or blogs that mention it, on SO and on dedicated https://salesforce.stackexchange.com/. Iframe sounds meh but there are ways for it to communicate with parent ("canvas apps" in documentation - and it has nothing to do with <canvas> tag), silently log in to SF, use REST API...
You could try to rewrite your app to native Aura/LWC but you won't be able to call APIs directly from JS. You'll have to pass through SF server-side language called Apex. Which is doable but more for you to learn. There are some more restrictions, although light DOM and LWS help with these, many things Locker service blocks are OK in LWS.
There's also hybrid approach with loading your app as a library?
I am trying to write tests for one of our rich text components which was implemented with slate js editor in react js. So when writing tests, I am retrieveing the element div[contenteditable='true'], but not able to simulate events like change, blur, focus. The handlers attached to editor component are not getting called. I tried multiple combinations, but no luck. Can someone please help on this? Is it possible to simulate events for contenteditable element using testing library (contenteditable is implemented using slatejs)?
Like you've discovered, contenteditable isn't supported by JSDOM. React Testing Library (RTL) is built on top of JSDOM, so it's not possible to test the Slate editor properly with RTL until JSDOM implements support for contenteditable.
Use a browser automation library together with Testing Library
Your options are then to use a tool that creates a real browser context. Testing Library have integrations with many tools that do exactly that: TestCafe, Cypress, Nightwatch, Puppeteer.
You can also use the above tools on their own, without Testing Library.
I've solved this using Puppeteer, and there are two approaches:
Run a local server and tell Puppeteer to go to something like localhost:3000
Set the content directly with page.setContent(htmlString)
(1) is the most common, and you'll find many guides for this since it's a common approach for end-to-end testing (google search).
(2) is a little trickier because you will have to transform and bundle your source for each test, and then inject it as HTML into the browser page. I prefer this approach because the testing experience is much more similar to using RTL. I've created a repository with an example of this setup with the Slate editor here: https://github.com/marcusstenbeck/puppeteer-react-testing-template/
I am working on a React-Python/Flask app which takes input bpmn diagram image from user & through python scripts convert it into bpmn file which then can be downloaded through flask api on user's device. I am working on react UI. Now i have to edit the diagrams & apply some visualization to them. So how can i integrate yFiles for html BPMN editor in my app. I have already downloaded its evaluation package from yworks.com & integrated the pack in React following the demos. But now i am stuck because there are not much tutorials available specifically for yFiles with react. When i searched for it, i found lots of tutorials of bpmn.js with react. Please help me with how can i go about it. I am new to yFiles I have looked into yFiles evaluation pack tutorials and i still dont know how to go about it in react. Also i have to use yFiles only due to client's requirement. Thank you for any help.
yFiles for HTML is not a React component - in fact it's a plain JavaScript component, that is not based on any third party framework or even software.
This doesn't mean that you cannot integrate it into React or Angular or Vue.js or any other well-behaved JavaScript client framework. In fact yFiles has been built to support the integration into all of these frameworks and if it doesn't work with a specific framework, this usually indicates a short-coming or more likely a bug in the third party framework, rather than in yFiles! After all yFiles is just this: plain JavaScript that manages a part of your HTML5 DOM (one div element and all it children, to be precise), a few lines of CSS and the rest is just JavaScript. If your UI library can provide these basic requirements (and React does, of course), yFiles can be made to run with that framework.
As you said, there are these various integration samples available that show how to integrate third party frameworks and yFiles (both with yFiles being a "client" as well as yFiles hosting DOM snippets created and maintained by these third party frameworks: https://github.com/yWorks/yfiles-for-html-demos/tree/master/demos/toolkit
For React, there is actually an additional repo on GitHub (which is not part of the evaluation package): https://github.com/yWorks/yfiles-react-integration-basic
React is very opinionated about the way an application or component should work. yFiles does not follow the React approach (and I honestly believe it would be a bad idea if it did), but the component you build can. The idea is to create a custom React component that internally uses yFiles for HTML for the visualization, the editing, and the handling of the BPMN editor. Just like you would encapsulate a native HTML5 textarea and two buttons into a React component, you encapsulate the "div" that is used by yFiles to manage the BPMN visualization and editor.
The BPMN demo does not use React. In fact it uses plain old HTML and does not use any real framework for the UI. This means you need to (and can) take that code and wrap it into a custom React component.
With the node module version of yFiles for HTML and the es6 style sample code, this should not be too difficult. After all it's just JavaScript without any further dependencies.
There are no additional tutorials for yFiles in the context of React. However that should not be much of a problem as any tutorial that shows how to wrap a generic JavaScript component or how to create a new one from scratch should be applicable.
If you run into a specific issue, post your question here (if it's about React) or contact the support team at yWorks if you are sure this is a problem specific to yFiles and not a generic JavaScript problem. Of course StackOverflow might work, too, in the yFiles case, however there aren't that many yFiles developers that hang around at StackOverflow, I think. Most of the time it's me or someone from the yWorks team, anyway.
I would like to visualise the components I have used in my project. I have used PHP for the backend and Laravel+Reactjs for the frontend.
What I want to achieve is to understand all the components that depend on each other and how/what they pass to each other.
Is there a way to automatically generate the class/component diagram out of the project in phpstorm or vscode? Can I visualise it on the Chrome's dev tool? Note: I am already using the Chrome dev tool for react component.
You can try dependency-cruiser.
dependency-cruiser can visualise dependencies.
I've used a Google extension called Realize for React for my project, which in the developer tool helps visualize components that appear on a specific route.
But the extension crashes often.
I want to create an MTurk HTML question that uses a modern web framework, such as Vue or React. For a minute let's assume I can't use an ExternalQuestion which just points to a website I create, but rather want to use HTMLQuestion.
Is that doable? Can I include React, for example, and it will work? Amazon's surrounding HTML will not interfere with it?
Yes, you can do this. Both HTMLQuestion and ExternalQuestion are rendered in an iframe when a worker accepts your HIT. As such, they're completely isolated from any other scripts or libraries on the surrounding page.