apply-with

apply a (asynchronous) function to an object and return this object, similar to kotlin's apply

Motivation

I'm tired of writing the following codes:

let person = {}
person.name = 'foo'
// ...
return person

and kotlin has a beautiful function apply:

return Person().apply {
  name = 'foo'
  // ...
}

So, I borrow the idea.

Installation

$ npm i apply-with

Usage

esm way

import applyWith from 'apply-with'

commonjs way

const applyWith = require('apply-with')

Example

applyWith(
  Promise.resolve({ a: 1 }),
  it => ++it.a,
  it => { it.a += 2 }
).then(it => console.log(it.a)) // output 4

API

applyWith(sth, ...funcs)

parameters

• sth - start point, if it is a promise, get the resolved value as the start point
• funcs - a series of (asynchronous) functions which accept start point as the parameter. Note! these functions' return values are irrelevant

returns

a promise resolved to the start point applied with given functions

Development

$ git clone https://github.com/xiechao06/apply-with
$ npm ci
$ npm run build # build
$ npm run test # test