no-useless-spread

Disallow spreads that have no observable effect

Spreading an inline literal directly into another literal or wrapping an iterable for an API that already accepts it creates an unnecessary intermediate value.
Instead, you SHOULD place the literal entries directly in the list or pass the iterable directly.

- Category: suspicious
- Level: warning
- Fix: automatic
- Scope: module

Reported

function append(output: int32[]): void {
    output.push(1, ...[2, 3], 4);
}
Accepted

function append(output: int32[]): void {
    output.push(1, 2, 3, 4);
}
Prior art

- eslint-plugin-unicorn · no-useless-spread

language/linter/src/rules/suspicious/nouselessspread.rs:8