ivan114/objectaccumulator

A Javascript/Typescript object merging tool, focus on performance and easy-to-use. Good alternative to deepmerge and lodash _.merge in most cases.

objectaccumulator's Issues

New properties are not added and array items are overwriten

import { Accumulator } from "object-accumulator";

let x = {
  name: "John",
  types: {
    age: 15,
    colors: ["green", "red"]
  },
  country: "Berkshire"
};

const a = Accumulator.from(x);

a.add({
  form: "cube",
  country: "Japan",
  types: { size: "big", colors: ["blue"] }
});

const mergedObject = a.merge();
console.log(`Merged Object`, mergedObject);

Merged Object {"name":"John","types":{"age":15,"colors":{"0":"blue","1":"red"}},"country":"Japan"}
'form, size' properties are not added, array item 'green' overwritten with 'blue'

Examples welcome, please help!

I would really like to use this library, but unfortunately there are no examples, how can I create and use KeyedAccumulator.
I would like to merge two objects in such way, that I remove from first object all elements (by key) which are not present in second object, then add to first object keys which are in second object, but not in first object, and lastly update values (by key) in first object from second object. Is this possible?