babel/packages/babel-plugin-transform-classes/test/fixtures/spec/preserves-directives/input.js

class MyCtrl {
  constructor(a) {
    "any directive prologue";
    foo;
  }
}

class MyCtrl2 {
  constructor(a) {
    "a";
    "b";
    foo;
  }
}

class MyCtrl3 {
  constructor(a) {
    "a";
    foo;
    "b";
  }
}