simple example of using this

this-example.js

function outer(props) {
  const self = this;
  self.outer = 'outer';
  function inner(props, ctx) {
    const self = this;
    self.inner = 'inner';
    ctx.outer = 'outer-malucao'
    return {
      inner: self.inner,
      ctx: ctx.outer,
      props
    };
  }
  return inner(props, self);
}
outer('some')
// ^^{inner: 'outer-malucao', ctx: 'outer-malucao', props: 'some'}