maybe-promise

Handling promise or non-promise in one operation

Install

npm install maybe-promise --save

Usage

If you would like to output promise or non-promise based on input, for example, you might have library called AwesomeStorage. And AwesomeStorage has 2 implementations.

If user uses localStorage, AwesomeStorage.get will return non-promise.

If user uses indexedDB, AwesomeStorage.get will return promise.

In this case, your AwesomeStorage based class can be following:

get(name: string) {
    return new MaybePromise(name).chain(this.getImpl).value();
}

abstract getImpl(name: string): any;

And getImpl will be implementation which return promise or non-promise based on storage type.