I am currently working on an Angular 5 project and came across this intriguing Typescript code snippet.
(method) CreateFlightComponent.handleSave({ currentValue, stepIndex }: {
currentValue: Partial<Flight>;
stepIndex: number;
}): void
Can someone provide a breakdown of this section? Perhaps there is a better way to convey this information using a different syntax?
{ currentValue, stepIndex }: {
currentValue: Partial<Flight>;
stepIndex: number;
}
The function handleSave accepts a complex type as its input parameter and returns void. This input type consists of two properties:
currentValue which is of type Partial<Flight>stepIndex which is of type number.An alternative way to represent the same information using different syntax is:
interface IHandleTypeParams {
currentValue: Partial<Flight>;
stepIndex: number;
}
You can then use this interface in the following way:
CreateFlightComponent.handleSave(input: IHandleTypeParams): void
Or, you can utilize destructuring like this:
CreateFlightComponent.handleSave({ currentValue, stepIndex }: IHandleTypeParams): void
For a practical example, check out this playground.
If you're interested in learning more about destructuring, you can visit the MDN website.
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