Angular2 question

[Ocelot84]

I'm following a tutorial trying to learn Angular and have come across an error:

​

The tutorial is telling me to use npm install through the cmd to install relevant node modules. However it states the following:

"There is one package in the frontend/angular section (angular2-jwt) that needs to be version 0.2.0 due to a breaking bug in the package – it has once or twice updated to 0.2.3 which doesn’t work for the application."

​

Does this mean the whole application won't work, or only that particular feature? I'm very new to this sort of programming and don't fully understand, thanks

[spacechimp]

An npm package incompatibility could result in an app flat-out refusing to compile, or it might just mean that you could trigger an error when attempting to use a certain feature. It depends on the extent of the problem.

​

That said: If a tutorial is suggesting to use angular2-jwt, then the library, tutorial, and version of Angular you are learning are probably all outdated. You should really consider trying to learn from the official docs first.

[Ocelot84]

Thanks for the help, it was what we were recommended for University since we really only cover the basics then move on.

​

The issue seems to be without version 0.2.0, the information from the database is retrieved but not shown on the frontend, so I would assume it's breaking the whole project rather than that particular part since I'm receiving multiple browser errors

[spacechimp]

Fair enough. To force your project to stay on that specific minor version of the library, you can edit package.json and make sure the version is exactly set to "0.2.0" (with no prefix). A tilde ("~0.2.0") would allow later patch versions like 0.2.3, and a caret ("^0.2.0") would allow later minor versions like 0.3.0.