Currently, I am developing a TypeScript-powered Angular (5) application and I have encountered a puzzling question that is proving elusive to solve. Let me illustrate with the following example:
...
export class SomeComponent implements onInit {
...
// Properties
someProperty: string = null;
isValid: boolean = this.someProperty !== null;
...
}
In this scenario, the isValid variable will be initially set to false since someProperty === null upon initialization. My goal is for isValid to dynamically update whenever someProperty changes, reflecting the appropriate boolean value based on whether or not someProperty is null.
Having familiarity with React and its state management system in the past, I incorrectly assumed that the above approach would work seamlessly. However, it seems that it doesn't, leaving me pondering about the proper TypeScript methodology for achieving this desired functionality?