Function build_obj

Builds an object in multiple steps, where each step can access the accumulated properties of the previous steps.

Each passed-in argument represents a step. Each step provides the new properties to merge into the accumulated object. A step may be a plain object, or a function returning an object which takes in the currently-accumulated object as its only argument.

Example

const person = build_obj({
  first_name: "John",
  last_name: "Doe",
  age: 27,
}, (o) => ({
  full_name: `${o.first_name} ${o.last_name}`,
  is_adult: o.age >= 18,
}), (o) => ({
  is_child: !o.is_adult,
}));
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