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map-obj

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map-obj

Map object keys and values into a new object

    5.0.2latest
    GitHub
    npm

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25,178,536
increased by6.51%

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map-obj

Map object keys and values into a new object

Install

npm install map-obj

Usage

import mapObject, {mapObjectSkip} from 'map-obj'; const newObject = mapObject({foo: 'bar'}, (key, value) => [value, key]); //=> {bar: 'foo'} const newObject = mapObject({FOO: true, bAr: {bAz: true}}, (key, value) => [key.toLowerCase(), value]); //=> {foo: true, bar: {bAz: true}} const newObject = mapObject({FOO: true, bAr: {bAz: true}}, (key, value) => [key.toLowerCase(), value], {deep: true}); //=> {foo: true, bar: {baz: true}} const newObject = mapObject({one: 1, two: 2}, (key, value) => value === 1 ? [key, value] : mapObjectSkip); //=> {one: 1}

API

mapObject(source, mapper, options?)

source

Type: object

The source object to copy properties from.

mapper

Type: (sourceKey, sourceValue, source) => [targetKey, targetValue, mapperOptions?] | mapObjectSkip

A mapping function.

mapperOptions

Type: object

shouldRecurse

Type: boolean
Default: true

Whether targetValue should be recursed.

Requires deep: true.

options

Type: object

deep

Type: boolean
Default: false

Recurse nested objects and objects in arrays.

target

Type: object
Default: {}

The target object to map properties on to.

mapObjectSkip

Return this value from a mapper function to exclude the key from the new object.

import mapObject, {mapObjectSkip} from 'map-obj'; const object = {one: 1, two: 2} const mapper = (key, value) => value === 1 ? [key, value] : mapObjectSkip const result = mapObject(object, mapper); console.log(result); //=> {one: 1}
  • filter-obj - Filter object keys and values into a new object

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Last updated on 21 Jun 2022

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