How to simplify conditional array value addition

Question

Here is the code:

const presets = (buildType === "___PROD___") ?
                        [   "react",
                            "es2015",
                            { "modules" : false }
                        ] : [
                            "react",
                            "es2015"
                        ];

As can be see, the values of react, es2015 are being repeated. Is it possible to not have this repetition in the ternary operator?

Best,

Dave Salomon · Accepted Answer · 2016-11-15 17:21:55Z

2

How about using the spread syntax?

var standardPresets = ['react','es2015'];
const presets = cond ? [ ...standardPresets , {modules: false} ] : [ ...standardPresets ];

Does you have to use a ternary if? Could you just .push into the array when that condition is met?

const standardPresets = ['react','es2015'];
if(cond){ standardPresets.push({modules: false}); }

Personally, I don't think the repetition is too awful as it is.

edited Nov 15, 2016 at 17:21

answered Nov 15, 2016 at 17:17

Dave Salomon

3,2771 gold badge19 silver badges29 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Mihailo Over a year ago

Beer o'clock it is :) np. I like your answer though, was thinking of a similar solutions myself.

Collectives™ on Stack Overflow

How to simplify conditional array value addition

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related