no-undef not reported in switch case block

Tell us about your environment

• ESLint Version: 4.19.1
• Node Version: 10.7.0
• npm Version: 6.4.0

What parser (default, Babel-ESLint, etc.) are you using? default

Please show your full configuration:

• https://github.com/Mailtech/eslint-config-coremail/blob/0.3.0/config/standard.yaml

What did you do? Please include the actual source code causing the issue, as well as the command that you used to run ESLint.

switch (1) {
case 0:
    const x = 1;
    break;
case 1:
    console.log(x);
    break;
}

eslint test.js

What did you expect to happen?

error ‘x’ is not defined no-undef

What actually happened? Please include the actual, raw output from ESLint. no error

[not-an-aardvark]

This is intended to be caught by no-case-declarations. The ReferenceErrors are resulting from a temporal dead zone reference to y, because y is declared in scope but is read before the declaration is executed.

[nzakas]

The team has determined that this behavior is working as intended, so closing this issue.