Is it possible to get es6 class constructor arguments list?

Question

I write services and controllers in my app (Angularjs - 1.6.3) using es6 classes.

I want to simplify some piece of code but don't know whether it's possible and how to get es6 class constructor arguments list.

Example of piece i need to simplify to prevent duplication:

class MyService {

    constructor (
        $q,
        $translate,
    ) {

        this.$q = $q;
        this.$translate = $translate;
    }
}

angular
    .module('app')
    .service('myService', MyService);

Is there any way to add dependencies to given context automatically?

Know that in angular2 there are decorators which helps not to duplicate dependencies to add them in current scope (or they do this any other way)

stackoverflow.com/questions/27619274/…

Thirueswaran Rajagopalan
– Thirueswaran Rajagopalan

2017-09-12 17:14:07 +00:00
Commented Sep 12, 2017 at 17:14 — Thirueswaran Rajagopalan
– Thirueswaran Rajagopalan, Commented Sep 12, 2017 at 17:14

Husky · Accepted Answer · 2018-01-31 16:30:10Z

0

You could use Object.assign combined with destructuring:

class Service {
    constructor($q, $translate) {
        Object.assign(this, { $q, $translate });
    }
}

This is equivalent to the code you wrote.

answered Jan 31, 2018 at 16:30

Husky

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3 Comments

Bergi Over a year ago

If this is the answer, isn't the question a duplicate of this? I'm not sure what the OP meant by "get arguments list".

Rantiev Over a year ago

The question is indeed the same thing, formulated using other words.

Rantiev Over a year ago

@Husky it's the way i have it now, tx.

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