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• I havesearched for related issues and found none that match my proposal.
• I have searched thecurrent rule list and found no rules that match my proposal.
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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://typescript-eslint.io/rules/no-floating-promises/

Description

Fastify.reply object hasthen method, but reply is not a Promise and its methods are not asynchronous

typescript-eslint marks each method of thereply object as asynchronous and requires it to be preceded by anawait call

Fail

import{FastifyReply,FastifyRequest}from'fastify';functionsetNotFound(req:FastifyRequest,res:FastifyReply,done:HookHandlerDoneFunction):void{res.status(404);res.send('Not found');done();}

Pass

import{FastifyReply,FastifyRequest}from'fastify';functionsetNotFound(req:FastifyRequest,res:FastifyReply,done:HookHandlerDoneFunction):void{voidres.status(404);voidres.send('Not found');done();}

Additional Info

The plugin should look at what the object's method returns, and not just whether the object has athen method.

Or it is necessary to configure the rule to be able to exclude this object/methods from consideration by this rule