This library lets you define objects that dynamically define properties as you try to access them (using ES6 Proxies).
Example:
var whatever = require('whatever.js');
var person = whatever();
person.info.name.first = 'Dan';
person.info.address.line1.street = 'Bartlett';
person.employment.company.name = 'Atlassian';
You can also specify defaults for only the properties you care about (e.g., for testing). Accesses to any other properties of the resulting object will just silently do nothing.
var person = whatever({
info: {
name: 'Billy'
}
}));
console.log(person.info.name); // => 'Billy'