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Angular News Tuesday, March 6 Angular cli, New angular app, Route guards & more…

Angular News TLDR / Table of Contents

  • This can be achieved with following node libraries: – lint-staged Run linters/formatters on git staged fileshusky Git hooks made easyInstall: – yarn add -D lint-staged huskyConfigure lint-staged: – lint-staged config within package.jsonAnd add commit hook via custom npm script, which will be recognised by husky and executed on particular git-hook….
  • Excellent, you will never ever have to argue with your PR reviewer about semicolons vs no-semicolons, spacesyou nameit.With that said, lets switch to more serious stuff – Unit TestingIf youre not testing your codebase I will find you and I will:DAngular CLI comes with Karma test runner and Jasmine expectation/spy…
  • Jest is a complete testing solution, that includes both test runner and assertion/spy library and much more – Its super easy to setup, its blazingly fast and introduces a brand new type of testingsnapshot testing ( which can be leveraged with everything that is serializablecomponent snapshots, state snapshots, image snapshots)…
  • You can see it deployed with various Angular stories examples here – Storybook CLI integration – To add Storybook to Angular CLI, we will leverage storybook CLI: – npx @storybook/cli@alpha getstorybookWhile we are enjoying our morning quick shot of espresso, everything is setup for us.Amazing!add storybook to angularCLIThen we execute…
  • You can learn more here – Storybook: write a story – Lets look very quickly how to write a story for simple button component: – Angular ComponetStoryStorybook: Component folder structure – With storybook covered, our final component folder structure should look like this: – Final folder structureimplementationunit test with snapshotsexternal…

Tags: Angular CLI, new Angular app, Angular team, various Angular stories, better Angular

  • Route Guards + HTTP Calls =BadRoute guards are great tools for things like: – Preventing a user from accessing a page they dont have permissions toPreventing a user from leaving a page with unsaved changesbut guards are NOT good for preventing the page to load during an HTTP request.
  • This is what your users are going to do!
  • Instead we want to navigate to the page instantly and show a partial paint of the page with some sort of loading message or indicator.
  • By loading the page partially it gives the user the feeling of instant satisfaction while we fetch our backend resources.
  • Remember, one second in user perception might as well be thirty seconds!

Tags: Route guards, great tools, HTTP request, backend resources, loading message

  • The Frontend Services Layer – – A set of Angular services that allow to interact with the backend and that can be injected into Angular controllers: – – – – []) – .
  • then(function (response) { – if (response.status == 200) { – } – else { – deferred.reject(‘Error retrieving user info’); – } – }); – – return deferred.promise; – } – – – – – Let’s see what other libraries we need to have the frontend up and running.
  • An internationalization module – – – – How to build a REST API backend using Spring MVC – – The backend is built using the usual backend layers: – – – – Router Layer: defines which service entry points correspond to a given HTTP URL, and how parameters are to…
  • Comparing the Spring / MVC Angular stack with other common approaches – – This approach of using Javascript for the frontend and Java for the backend makes for a simplified and productive development workflow.
  • The largest productivity gain is obtained when the same developers build both the Javascript frontend and the Java backend, because often simultaneous changes on both are needed for most features.

Tags: frontend, backend, frontend services layer, Spring MVC, frontend development stack

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