no-single-promise-race

Disallow Promise.race over one Promise

Racing one Promise cannot select among competing asynchronous work and often indicates a missing Promise.
Instead, you SHOULD use the existing Promise directly when no second input is intended.

Promise.race creates a distinct Promise and schedules its settlement through the combinator.

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

Reported

import { Promise } from "destack:async";

function first(value: Promise<int32>): Promise<int32> {
    return Promise.race([value]);
}
Accepted

import { Promise } from "destack:async";

function first(value: Promise<int32>): Promise<int32> {
    return value;
}
Prior art

- eslint-plugin-unicorn · no-single-promise-in-promise-methods

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