no-useless-concat

Disallow concatenating adjacent string literals

Concatenating adjacent string literals produces a value that is already known in the source.
Instead, you SHOULD write the value as one string or template literal.

- Category: suspicious
- Level: warning
- Fix: none
- Scope: module

Reported

function message(): string {
    return "hello, " + "world";
}
Accepted

function message(): string {
    return "hello, world";
}
Prior art

- ESLint · no-useless-concat

language/linter/src/rules/suspicious/nouselessconcat.rs:6