prefer-template option, allowing multiline concatenation

Hi.

I think it would be useful to allow string concatenation, if user spreads the string across multiple lines(either because the string is too long to fit into a single line, or for readability purposes).

For example this code will throw:

/*eslint "prefer-template": "error" */
const name = "John";
const longStr = 'Hi, ' +
    name +
    '. I am a long string, ' +
    'that\'s going to be spread across multiple lines.';

I propose an option, like allowMultiline, so that this code doesn’t throw:

/*eslint "prefer-template": ["error", { "allowMultiline": true }]*/
const name = "John";
const longStr = 'Hi, ' +
    name +
    '. I am a long string, ' +
    'that\'s going to be spread across multiple lines.';

[mysticatea]

@EnoahNetzach You can use concatenations.

/* eslint prefer-template: "error" */
/* eslint-env es6 */

const name = 'John'
if (check) {
    const string = `This line spans multiple lines, but when I go` +
        `to a new line all my efforts to maintain a nice-looking` +
        `indentation are gone. By the way, hi, ${name}!`
}

prefer-template is not warning concatenations between literals.

[alberto]

Thanks for your interest in improving eslint. Unfortunately, it looks like consensus couldn’t be reached on this issue and so I’m closing it. While we wish we’d be able to accommodate everyone’s requests, we do need to prioritize. We’ve found that issues failing to reach consensus after 21 days tend never to reach consensus, and as such, we close those issues. This doesn’t mean the idea isn’t interesting, just that it’s not something the team can commit to.