Storing long-lasting information in a TypeScript-powered platform

How can TypeScript be used to save data to a service?

Consider this example service:

class MyService {
    persistentData: Object;

    constructor() {
        this.init();
    }

    private init = (): void => {
        this.persistentData = {};
    }

    public saveData = (data): Object {
        this.persistentData = data;
    }
}

Is there a way to maintain consistent data across different routes? Each time a new route is accessed, the service class is instantiated again and the persistentData object is reset. In regular JavaScript, the following approach could be taken:

angular
    .factory('myFactory', function() {
        var persistentData = {};

        return {
            setFormData: function(newData) {
                persistentData = newData;
            }
        }
    })

While this method works, I feel like there might be something missing. Can anyone offer some insight?

Answer №1

To utilize a class effectively, ensure that the property is static to allow for sharing across all instances of the class and refrain from resetting it to {} every time a new instance is generated:

class DataService {
    static sharedData: any = {};

    storeData = (data: any) => {
        DataService.sharedData = data;
    }
}

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