Partial default arguments

getify wrote:

object destructuring (even with defaults) can be nested, even in parameter lists, so you can unwind any arbitrary depth object into top level parameters in your function, then recombine them as necessary. It's not as bad as you might think:

function foo(
  // destructure with default setting
  {
    options: { remove = true, enable = false, instance = {} } = {},
    log: { warn = true, error = true } = {}
  }
) {
  // restructure
  let opts = {
    options: { remove, enable, instance },
    log: { warn, error}
  };

  console.log( opts );
}

foo({
  options: {
    remove: true,
    enable: false,
    instance:{}
  },
  log: {
    warn: true,
    error:true
  }
});

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