Bug report:
https://babeljs.io/7#?evaluate=true&lineWrap=false&presets=es2015%2Cstage-2&code_lz=MYGwhgzhAEAqCmEAu0DeAoa1gHsB2yATgK7BI6EAUAlGpltuFNAPJIAW8h08AHkvDwATGAmR0GDMNAC80GrIB80CMQAOXAHQDkAbnpYAvvWOGgA

Input Code

class Test {
  constructor() {
    class Other extends Test {
      a = () => super.test;
    }
  }
}

Babel Configuration (.babelrc, package.json, cli command)

{
  "presets": ["es2015", "stage-2"]
}

Expected Behavior

Other's super calls should reference Other's prototype chain.

Current Behavior

Other's super calls reference Test (the outer class)

Possible Solution

We're traversing too far into classes (specifically into their properties). Class properties define their own context (they have a implicit initializer function). We could either stop at Class (not super future proof, if a new node is later added to acceptable ClassBody list), or we can stop at both Functions (like we do today) and ClassProperty.