'Upgrading Angular From v8 to v13' angular typescript
In this post, I will report what I learned in the migration of Angular applications v8 to v13. In addition, I will show you the most common errors that you may encounter in the process as well as their respective solutions, indicating the sources when appropriate.
I spent 1 year and a half allocated in a division that worked with many applications and a suite of components built in Angular 8.working group where the subject of angular application migration has always been talked. Considered a critical issue, especially when we remembered the risk of recent cases such as theThen came an opportunity to work with technical debt. When we did this work the Angular version was 13 and becauseWe take the experience we had in migrating the component project from Angular 8 to 13. These are the possible migration approaches:with each version because it is not possible through it to move from version 8 straight to 13, so you need to run this command to migrate from 8 to 9, from 9 to 10, and so on. The advantage is that it converts the code automatically, but the process of going through so many versions ends up being more costly and therefore it is not advised in our case where there was aCreate a new project in Angular 13 and copy the fonts from the old project into Angular 8. Then solve the problems as they arise.for the migration of our component project and is what we recommend in this situation.2) Create a new projectWhen copying the fonts it is advised to keep the newthat was generated to include and resolve the various dependencies on demand so that at the end of the process only the ones really needed are included, thus also meeting the best safety standards.4) Modify tsconfig.lib.json settings"target": "es2017", "module": "es2020", "lib": [ "es2020", "dom" ]An unhandled exception occurred: The target entry-point "@novo-projeto" has missing dependencies: primeng/toast, primeng/button. This will be the most common error because it will occur for all the various dependencies that have not yet been included, such asTry to always define the version of the dependency corresponding to the current version of Angular in the project.Script file ____ does not exist."ng build" for library fails with "does not support the 'build' target
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