Check if module was required to a local variable

[keeprocking]

According to https://luacheck.readthedocs.io/en/stable/warnings.html, there's no warnings for cases when a module being required is not assigned to a local variable, e.g.

require 'foo.bar'

instead of

local bar = require 'foo.bar'

Is it possible to add one? I would love to have a separate warning code for this because I need to differ such cases from "113 - Accessing an undefined global variable".

Thank you.

[mpeterv]

This can be added, yes. In case require argument is a literal it could use it as the warning "name" for filtering, so that something like ignore = {"xxx"}; only = {"xxx/foo%.bar"} enabled the warning only for foo.bar module (where xxx is the new warning code). Or perhaps the warning should be disabled by default, then the ignore option is not needed.

[keeprocking]

Sorry, I don't understand.
If I want to spot all the places (without knowing which modules are actually being required) where require is called without saving its result to a local variable, how do I do that?
Is it possible with existing config options?

[keeprocking]

Petya? Some help would be much appreciated!