Array destructuring into object assignment in a single instruction

Question

Eslint yells at me about this line because it should be done with array destructuring :

postModel.base64File = formFile.split(',')[1];

I am concerned because I cannot find a way to do this in a single instruction. The best I came up with is the following :

const [, b64] = formFile.split(',');
postModel.base64File = b64;

Is there a way to make this assignment in a single instruction ?

Nina Scholz · Accepted Answer · 2019-04-28 10:00:46Z

2

You could destructure to the property directly.

var postModel = {},
    formFile = 'a,b';

[, postModel.base64File] = formFile.split(',');

console.log(postModel);

The same with an object and an index as target.

var postModel = {},
    formFile = 'a,b';

({ [1]: postModel.base64File } = formFile.split(','));

console.log(postModel);

answered Apr 28, 2019 at 10:00

Nina Scholz

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1 Comment

Ah, thanks ! I was close with const [, postModel.base64File] = formFile.split(',');, which generated about 1 million more errors !