Catatomik/eslint-ts-fpos-no-base-to-string

Illustrate a possible false positive of a typescript-eslint rule

typescript-eslint false positive : no-base-to-string

This repository illustrates a false positive of the typescript-eslint's rule no-base-to-string.
It uses types from discord.js

Setup

Install dependencies : pnpm install or npm install.

Usage

Simply run linting on repository : npm run lint.

Explanation

Type of variable channel is TextChannel, which has a correct .toString method. The type of variable channel has been checked by debugging the typescript-eslint rule, using checker.typeToString.
Other debugging shows that parent expression, channel.toString, is of type

(() => `<#${string}>`) & (() => string)

For clarification purpose, .toString is directly called, but done under the hood by JavaScript, and TypeScript & typescript-eslint understand that, so the result is the same.

Cannot explain why this false positive exists.