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• I have searched for related issues and found none that match my proposal.
• I have searched the current rule list and found no rules that match my proposal.
• I have read the FAQ and my problem is not listed.

My proposal is suitable for this project

• I believe my proposal would be useful to the broader TypeScript community (meaning it is not a niche proposal).

Link to the rule's documentation

https://v8--typescript-eslint.netlify.app/rules/no-floating-promises

Description

Following #8433 -> #9263: we'd resolved to add a new checkThenables option to the no-floating-promises rule. It's enabled by default in v7 to avoid a breaking change. But for v8 we'd like to disable it by default.

Fail

/* @typescript-eslint/no-floating-promises: ["error", { "checkThenables": true }] */

interface MyThenable extends PromiseLike<string> {}

declare function createMyThenable(): Promise<string>;

createMyThenable();

Pass

interface MyThenable extends PromiseLike<string> {}

declare function createMyThenable(): MyThenable;

createMyThenable();

Additional Info

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