RemoveOptionalObject.ts

import { faker } from '@faker-js/faker'

export type User = {
	fullName?: string
	title?: string
	deputy?: string
	department?: string
	visible?: boolean
}
export type UserCreate = {
	fullName: string
	title?: string
	deputy?: string
	department?: string
	visible?: boolean
}
export type UserUpdate = {
	fullName?: string
	title?: string
	deputy?: string
	department?: string
	visible?: boolean
}

export function createRandomUser(): User {
	return {
		fullName: faker.datatype.boolean() ? faker.person.fullName() : undefined,
		title: faker.datatype.boolean() ? faker.person.jobTitle() : undefined,
		deputy: faker.datatype.boolean() ? faker.person.jobArea() : undefined,
		department: faker.datatype.boolean() ? faker.commerce.department() : undefined,
		visible: faker.datatype.boolean() ? faker.datatype.boolean() : undefined,
	}
}

export function mockRequest(userDto: User) {
	const schema = {
		fullName: userDto.fullName,
		title: userDto.title,
		deputy: userDto.deputy,
		department: userDto.department,
		visible: userDto.visible,
	}

	const updateSchema = {}

	for (const key in userDto) {
		if (userDto[key]) updateSchema[key] = userDto[key]
	}

	return {
		create: schema,
		update: updateSchema,
	}
}

export function mockRequestClean(userDto: User) {
	const schema = {
		fullName: userDto.fullName,
		title: userDto.title,
		deputy: userDto.deputy,
		department: userDto.department,
		visible: userDto.visible,
	}

	return {
		create: schema,
		// https://stackoverflow.com/a/38340730/11163784 (ES6/ES2015)
		update: Object.keys(schema)
			.filter((k) => schema[k] != null)
			.reduce((a, k) => ({ ...a, [k]: schema[k] }), {}),
		// update: Object.fromEntries(
		// 	Object.entries(schema).filter(([_, value]) => value),
		// ),
	}
}

export default function measurement() {
	console.time('ForLoop')
	for (let index = 0; index < 1000; index++) {
		mockRequest(createRandomUser())
	}
	console.timeEnd('ForLoop')
	console.time('ObjectKeys')
	for (let index = 0; index < 1000; index++) {
		mockRequestClean(createRandomUser())
	}
	console.timeEnd('ObjectKeys')
}

measurement()

Minimal Benchmark Setup

ForLoop: 30.688ms
ObjectKeys: 23.802ms

This benchmark would likely accurate for the environment server due to threading and anything, however this is not encouraged as final benchmark result.