Extended Class order of inits

index.js

#!/usr/bin/env node

let C = console;

class C0 {
  constructor() {
    C.log(`C0 construct’d`);
    C.log(`C0 this’d`, this);
  }
  foo = (() => C.log(`C0 init`))() || `C0 init`;
}

class C1 extends C0 {
  constructor() {
    C.log(`C1 construct’d`);
    C.log(`C1 super’d`, super());
  }
  foo = (() => C.log(`C1 init`))() || `C1 init`;
}

class C2 extends C1 {
  constructor() {
    C.log(`C2 construct’d`);
    C.log(`C2 super’d`, super());
  }
  foo = (() => C.log(`C2 init`))() || `C2 init`;
}

new C2();

package.json

{
  "name": "class-order-of-inits",
  "version": "1.0.0",
  "bin": "./index.js"
}