koa2 | koa2 mongodb 博客系统 | Application Framework library

For some reasons, I need to use webpack to package node js source files, but I cannot debug the compiled files because it is too difficult to read. Debugging with console.log is limited. Is there a better way to solve it?

Here is project example:

tree:

I am trying to get the node-sass-middleware using koa2. There is a module koa-sass that works perfectly, but it is using generator.

I am trying to fetch an image from external URL and then send it as a response in koa2. For fetching the image I am using Axios library.

I am trying to do that the following way:

I have a Koa2 application, which renders templates on different routes. I'd like to introduce a middleware which will modify rendered templates in some way and I need it to be the last in a chain of other middlewares. Are there any way to enforce some middleware to be applied last before firing response using Koa2 and without modification of the already defined routes?

I have tried the code below:

I'm performing a variable assignment in a non-asynchronous function, but the value of the destination variable does not change after the assignment statement runs.

ctx is a Koa2 context. This code runs once a http response has been received. I'm trying to update the context with the values from the (http) response object.

Neither ctx, nor ctx.response is frozen.

I expect ctx.response.status to equal 200 in the 'AFTER' console.log

I suspect that this is idiosyncratic Node behaviour, but I don't know Node very well.

What am I doing wrong here?

Perhaps this has a very easy answer, yet something is off with my code. Here is what I want to do.

I created a koa2 app using koa-passport, and I want to encapsulate the usage of Passport in a class AuthAdapter (shortened below).

I am using nodejs koa rest api service. And I want to pass a parameter to validation middleware.

But I also need to pass context.

How can I correctly use middlewares with koa2

I was confused with how to call a function which maybe a clousre When I learn JavaScript. I use Java before.

When I write a middleware such as for koa2, I write:

I want to use Facebook's DataLoader with Koa2 in Typescript. I want per-request DataLoader instances to go with my per-request database connections. How is this best achieved?

My current approach is to augment the Koa2 context but I'm failing because I don't know how to fix the type definition.

Here is my attempt at module augmentation...