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QUESTION
I have been following this tutorial, https://learn.yorkcs.com/2019/02/07/build-a-space-shooter-with-phaser-3-3/ , to make games with Phaser 3 but since I want to deploy them online I'm converting the code to use with TypeScript as I am preparing it via an Ionic 5 app. In the tutorial, I'm supposed to set a player sprite's velocity. For clarity, there are two classes I must create, Entities.js
(which I created as entities.ts
) and Player.js
(which I made into player.ts
). The entities are supposed to be an extension of Phaser.GameObjects.Sprite
, and the player is supposed to be an entity, extending the entities class. So far, I get everything working except when reaching the part about setting the player's velocity.
This is my entities.ts
:
ANSWER
Answered 2020-Nov-16 at 23:12The error message indicates that your player body is one of these types 'Body | StaticBody | BodyType'
but StaticBody does not have a setVelocity
method. Typescript has the concept of typeguards to handle this situtation, where you work with union types that have different members.
The solution here, is to check if the this.body has a setVolicity function.
QUESTION
I'm new to ReactJS world and helping one team with deployment of their React application to the Docker container. I have done following tasks.
- Created Ubuntu machine in EC2 and installed Docker engine.
- Copied the entire
React
code in one of the folder, addedDockerFile
andDocker-compose
yml file. Team has few other applications to deploy together and that is why I've included docker-compose file. But, right now just deploying oneReact
application. - After doing
docker-compose up
container is getting created and exiting immediately. I then checked the logs of exited container (shown below).
/usr/src/app/src/index.js:1 import React from 'react'; ^^^^^
SyntaxError: Unexpected identifier at Module._compile (internal/modules/cjs/loader.js:723:23) at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10) at Module.load (internal/modules/cjs/loader.js:653:32) at tryModuleLoad (internal/modules/cjs/loader.js:593:12) at Function.Module._load (internal/modules/cjs/loader.js:585:3) at Function.Module.runMain (internal/modules/cjs/loader.js:831:12) at startup (internal/bootstrap/node.js:283:19) at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3)
I researched on this error and looks like this is because of compiling, missing webpack or something in React application. I'm not sure what to fix in React and where.
Here is package.json
file in case if you can help to figure out the problem.
ANSWER
Answered 2020-Oct-04 at 07:26After a lot of research, I could deploy this react app. Here are the issues.
Issue was with the
dockerfile
anddocker-compose
file. I added completely new files with different content.React app was deploying to some miserable port. So, I explicitly added PORT 8080 in
package.json
file. This is not a clean solution but this worked.
Below are the new files.
package.json
QUESTION
I currently have a React app that I'm trying to convert to a Blazor WebAssembly app. The React app has a component that imports a JavaScript library, the sample code for which can be seen here. The imported charting_library
code itself isn't accessible without access being granted, but that shouldn't be an issue for answering this question.
In my React app, as per the sample code, I have the following code (stripped for brevity):
...ANSWER
Answered 2019-Nov-02 at 20:52JavaScript components and code should be executed after the Blazor app is rendered. The most appropriate place to do that is to use JSInterop from the component's life cycle events OnAfterRender (bool firstRender) and OnAfterRenderAsync (bool firstRender)
This code: await JSRuntime.InvokeVoidAsync("new widget()");
, should be placed in one of these two methods, and is automatically called, say to create and initialize your JavaScript widget.
Did you create this component?
I guess no, so how can you try to use it. There is no such component
This @DisplayTradingViewChart()
is calling the DisplayTradingViewChart() method, when the page is being rendered. It may lead to an error. Once again, use the two methods above.
Here is a link to an answer which demonstrate how you can use JavaScript in Blazor.
Hope this helps...
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