Short quick version

nvm install v10.16.3

nvm use

npm install

npm start

###What is happening? the magic is in src/app/stores/account.store.ts

The data is an observable array of transacions, a transaction is a number positive or negative. the derived data from the transactions are balance, isNegative, withdrawls, and deposits. Each of those functions has a decorator of @computed.

The actions are in functions with @action decorator, deposit, withdrawl, clearHistory

The store is a service you inject into your components. you surround your data with the *mobxAutorun directive

evething just works after that checkout transactions.component.html

    <div *ngFor="let withdrawl of account.withdrawls">{{ withdrawl }}</div>

just loop the computed value "withdrawls" it will print out the transactions that are negative and only get called when the data changes.

This project was generated with Angular CLI version 8.3.14.

Run ng serve for a dev server. Navigate to https://localhost:4200/. The app will automatically reload if you change any of the source files.

Run ng generate component component-name to generate a new component. You can also use ng generate directive|pipe|service|class|guard|interface|enum|module.

Run ng build to build the project. The build artifacts will be stored in the dist/ directory. Use the --prod flag for a production build.

Run ng test to execute the unit tests via Karma.

Run ng e2e to execute the end-to-end tests via Protractor.

To get more help on the Angular CLI use ng help or go check out the Angular CLI README.