Extract Updated & New Fields

extractUpdatedAndNewFields

The extractUpdatedAndNewFields function recursively compares an updated object with a base object and returns a new object containing both modified values and newly added fields.

Function Signature

function extractUpdatedAndNewFields<T extends GenericObject, U extends GenericObject>(
  baseObject: T,
  updatedObject: U
): FlattenPartial<T> & FlattenPartial<U>

Parameters

• baseObject (T): The original baseline reference object.
• updatedObject (U): The modified object containing potential updates and new fields.

Return Value

• FlattenPartial<T> & FlattenPartial<U>: A combined object containing all updated values and new keys.

Example Usage

Notes

• Arrays: Arrays are treated as atomic values (not recursively diffed).
• Returns a new object without mutating either input.

Types

FlattenPartial<T>

type FlattenPartial<T> = Partial<{ [K in keyof T]: T[K] }>;