Run generated JS expressions in a closure with dynamically injected dependencies

dynamic-dependency-injection.js

var Adaptor = {
  foo: function(message) {
    console.log(message);
  },
  bar: function() {
    return 'baz'
  }
}

function getHandlers(adaptor) {
  return Object.keys(adaptor).map(function(key) {
    return adaptor[key]
  })
}

function Inject(adaptor, f) {
  // Get the functions for all the keys in the adaptor
  // [[Function], [Function], ...]
  var handlers = getHandlers(adaptor)

  // Create a new Function with arguments in order and matching the names
  // of the adaptor.
  //
  // new Function('foo', 'bar', 'foo(bar())')
  //
  // Then call the new function with the handlers in order.
  return new Function(Object.keys(adaptor), f)
    .apply(null, handlers)
}

Inject(Adaptor, 'foo(bar())')
// bar