I am running into a MOCHA problem in reference to the book, Chapter 1, during the first run of MOCHA test. it saying that my /heartbeat is undefined and not a function. I have copied the book, and I have even backed dependencies back down to what the book used (not what is most current) and still having a failure. I have my development upto the point of the failure in the book on github here (https://github.com/EnergeticPixels/expressWebAppDev_packt.git). Can anyone help point me out my mistake??? It has to be something simple.
totally my fault. I missed a darn comma following the function name in the express/index.js file. Told ya it was a simple mistake.
Related
Hope the holidays are treating everyone well. I'm a beginning coder working on a full stack application. Currently I'm trying to build a back end skeleton leveraging MongoDB, Express, and Node.js. Everything seems to be going well but for using an express json web token to authenticate a required sign-in method. What's odd to me is the error references '. . . Webpack imported module 2 . . .' . I am using Webpack and Babel as compilers etc. but don't have the experience to connect the relationship between Webpack and express-JWT. My guess is that one of the modules I'm working with is out of date and thus not compatible with the others but am not sure which one. Of course, there could be an error in my code but I've tried to debug based on the error message to no avail. Would greatly appreciate your insights and help - thank you!
As mentioned, I'm a beginning coder but have tried the following: a) the two stack overflow threads below seemed to point me to documentation or updated syntax and I've tried variations of both but to no avail.
express-jwt got TypeError: express_jwt__WEBPACK_IMPORTED_MODULE_2___default(...) is not a function
and
TypeError: Webpack imported module is not a function.
Given the suggestions to review documentation I reviewed Webpack, Express, and even React (plan to use react on the front end) documentation but again, I didn't see, what in my mind, could be related subject matter. I think someone with more experience would prob know exactly where to look in the documentation but I don't seem to be able to put the pieces together given the little coding experience I have. Guidance on where to look in the documentation would be great as I'm eager to get more comfortable reviewing primary reference material. Regardless, appreciate the help and plan to pay it forward one day soon - thanks again!
Screenshots below: respective code truncated for relevance, package.json file
[respective code truncated for relevance] (https://i.stack.imgur.com/iOwVK.png)
package.json file
as shown below:
I don't understand why, the syntax and format is correct, it's extremely confusing.
I review my code carefully but can't figure out
this seems to be a bug with VS Code. This could be because VS Code is not updated, or an extension that is not supported anymore.
first, try ctrl + shift + p and running >Developer: Reload Window this should reload your current environment and the error should be fixed.
If that doesn't work, try a different extension. I currently use Vetur, and Prettier.
And don't forget to make sure your VS Code is up to date. go to the bottom left and click the settings cog, then check for update or updates.
My answer is, "Start from scratch, and record your steps." I'm happy to share my notes on what is presently working: https://github.com/TheAutomaTom/VsCodeSettings-Vue3
My personal machine had been in that spot for some weeks, so I took a step back and dump out your cornucopia of extensions and their dependencies.
Only run pertinent language services. This is a tall order given how much a Vue + Typescript + Tailwind on Vite app covers. I am suspicious of generalized HTML/CSS/JS packs though, because they may not be built to parse Vue SFCs. Every new release of a services intended for other frameworks, like Angular or React, are still possible culprits (and moving targets).
I gave up getting Prettier and ESLint on stable ground. For a non-workplace thing, I feel okay about that. You may be having issues with a global package, if you've been experimenting. I've tossed out a couple branches following different tutorials. I intend to revisit this one since it has some example projects: rvest.vs-code-prettier-eslint
I've noticed the Volar team seems to let oddities squeak out a little more frequently than I remember in Vetur.... but we love them just the way they are. Sometimes I downgrade just to check if I've gone crazy, yet.
hy all,
I state that I have already read the other issues on this problem but I have not found what is right for me, or rather: I believe that sonarqube should not manage my code like this, let me explain:
it signals, in almost all returns, that it failed to run the unit test and, for this reason, the entire application is branded as "failed". But the Vue3 data construct, which uses the default return (doesn't seem complicated and abstruse to me) shouldn't be tested? How could I fix it?
Thank you all.
Context
As a university project we want to change the the pharo vm to use an object-table and see what happens.
We use a pharo-vm clone from github and VMMaker. Building the VM works fine.
To get started we added a primitive that returns an incremented Integer:
InterpreterPrimitives>>primitiveIntegerIncrement
"increments an integer"
self pushInteger: self popInteger + 1 .
and modified StackInterpreter class>>initializePrimitiveTable accordingly
MaxPrimitiveIndex := 576.
"... and so on ..."
(575 primitiveFail)
(576 primitiveIntegerIncrement))
And it works.
Problem
When we make changes to the VM we want to test-run already in the SmalltalkImage so we do not need to compile and see it did not work.
Something like:
StackInterpreter test: '1 inc'
And then I can debug if the primitive is wrong or an error occurs. Of course there needs to be done much more but how can I achieve this?
What we tried
category VMMaker-InterpreterSimulation class StackInterpreterSimulator. Trying the code in the comments
DoIt
^ (StackInterpreterSimulator new openOn: Smalltalk imageName) test
errors:
displayForm := 'Display has not yet been installed' asDisplayText form.
the ByteString does not understand asDisplayText
(CogVMSimulator new openOn: Smalltalk imageName) test
(InterpreterSimulator new openOn: Smalltalk imageName) test
error:
PrimitiveFailed: primitive #basicNew: in Array class failed
I also found this screen cast but it only debugs the VM from outside using gbd: http://vimeo.com/22485382#
Our project is hosted here: http://smalltalkhub.com/#!/~kirstin/PharoObjectTable
Current Status
We started implementing an object table. The lookup of attributes can go throught the object table. Full object table support and no usage of direct pointes is very tricky since pointers are expected everywhere. So we use pointers into the object table to identify when a lookup should go through the OT. We also found all object creation primitives and add new objects to the table.
How long is your project and how many people are you ? To me what you try to do is quite some work. Do you have good knowledge about low level behavior ?
To answer your question, the main problem here is that the cog simulator is not maintained in the pharo vm fork. This is because no one in the pharo crew use the simulator. We only use external debugging from gdb. In fact the pharo folks work mostly on VM plugins, the core of the VM is mainly maintained and developed by Eliot Miranda which works on Squeak. Therefore we report to him when there's a bug in the VM core.
For your project you would have to split it in at least 2 steps:
step 1: make the object table work with the stack VM
step 2: make the JIT work with your object table
Note that for step 2 I would recommend not to change the way an object access its header, therefore having a VW-like object table where you have the fixed size header on the one in the the object table, and the fields of the objects (and maybe header extensions) in the heap.
So use the StackVMSimulator and build the StackVM first. When everything will work (including context), you can think about hacking the JIT. Recently Guillermo Polito ported the Stack VM to the build process (see PharoSVMBuilder instead of PharoVMBuilder), a guy reported problems with this builder but you could hack it a bit to make it work.
Now to make the simulator work on Pharo 2.0 (which is the Pharo version of the generator image you have), you have to open the monticello browser and merge from Eliot's branch the Cog package (repo MCHttpRepository location: 'http: //source. squeak. org/VMMaker'), but not the latest Cog, the one at around the same date as the current VMMaker package of pharo-vm because the latest Cog and VMMaker of Eliot's branch are not stable.
The alternative being to start from Eliot's build image and merge things from the pharo branch. Here are infos about how to build the squeak development image (http://www.mirandabanda.org/cogblog/build-image/).
Then Eliot gave me this script once:
| cos |
cos := CogVMSimulator newWithOptions: #(Cogit SistaStackToRegisterMappingCogit).
cos desiredNumStackPages: 8.
cos openOn: 'my/favourite.image'.
cos openAsMorph; toggleTranscript; halt; run
You don't need the SistaStackToRegisterMappingCogit option. I guess some similar script with the StackVMSimulator should work.
Lastly there are some documentation about the simulator but it is only for the CogSimulator (these documentations expects you already knows how the StackSimulator works, and just give you hints about how to use it with the JIT):
http://www.mirandabanda.org/cogblog/2008/12/12/simulate-out-of-the-bochs/
and in one of the video named "Cog VM (part x)", x being from 1 to 6, Eliot shows how he uses the simulator to disassemble x86, print the stack and inspect the heap.
Another tip, ask your questions on the pharo mailing list (pharo users or pharo dev), because here no one may notice your question (fortunately someone pointed me out your question this time).
And tell on the pharo mailing list if you managed to run the simulator in Pharo 2.0, some people (as me) are very interested in it. I was planning to do it at some point.
Good luck ! Nice project anyway.
The last time I tried to use the simulator is roughly a year ago, and I did not make it work.
However, there are a few patches, which I assume never got integrated that might be of help:
https://code.google.com/p/cog/issues/detail?id=106
https://code.google.com/p/cog/issues/detail?id=107
https://code.google.com/p/cog/issues/detail?id=108
Issue 107 includes a patch for your asDisplayText issue.
I'm trying to learn Cucumber. After poking around a bit on SO I found a link to this tutorial. It was very helpful (and I recommend it highly!), but, for a beginner like myself, a couple of the early steps were opaque. I thought I'd explain these two pitfalls here, to spare future Cucumber students the head-scratching they caused me.
The two problems both came up in this section:
Starting the fail-fix cycle
I run it using cucumber features, and it fails on the first line –
Given I go to the new book page – because cucumber doesn’t know where
the “new book page” is. So I add that to the cucumber paths helper.
when /the new book page/
new_book_path
I had trouble interpreting this section and running her code.
My first question was: where do I find the cucumber paths helper file?
Once I figured it out and ran cucumber features, I got a syntax error.
My second question was how do I debug the syntax error that her code raises? I've tried to answer these two questions below.
First Gotcha: where the heck is the `cucumber paths helper'?
First off, she talks about adding a step to the cucumber paths helper. I struggled for a while to figure out where this file was located. I couldn't find anything with a similar name in my app, and google searches didn't yield any useful results. What was going on?
It turns out that I couldn't find the file because it's not automatically generated -- you need to create it yourself. Furthermore, the name of the file is totally arbitrary: it doesn't need to be called cucumber_paths_helper. That's why my google searches were fruitless.
For her code snippet to be executed it just needs to be in some file living in the features/support folder. All of the code in this directory is executed before any cucumber tests are run. The solution? I put her code into a new file at features/support/manage_books_steps.rb.
Ok, one down...
Second Gotcha: syntax error, unexpected keyword_when
The next problem showed up when I tried to run cucumber features. I got this:
/Users/dB/myApp/features/support/manage_books_steps.rb:1: syntax error, unexpected keyword_when
when /the new book page/
^ (SyntaxError)
For some reason my system couldn't parse this code. I'm not sure why exactly, but I'm guessing that Sarah was using some gem or tool to preprocess her code that I didn't have installed, and she unfortunately didn't go into detail about her gemset in the article. (Maybe she wrote it before cucumber's training wheels came off?) In any case, after consulting some other cucumber tutorials I tried reformatting her snippet like so.
When /^I go to the new book page$/ do
visit new_book_path
end
This worked.
After getting past those two little obstacles, the rest of the tutorial was a synch.
Anyway, I hope this helps someone somewhere down the line. And thanks, Sarah, for a great tutorial.
Edits/comments/corrections are welcome.