map-obj
Advanced tools
Package description
The map-obj package is a utility that allows you to map object keys and values into a new object. It provides a simple way to transform objects based on a mapping function.
Mapping keys and values
You can map the keys and values of an object to new keys and values. For example, you can take an object with keys 'foo' and 'bar' and transform them into 'newFoo' and 'newBar' with corresponding values.
{"newKey": "newValue"}Custom mapping function
The package allows you to provide a custom mapping function that receives the key and value of each property and returns a new key-value pair array. This function is applied to each property in the original object.
const mapObj = require('map-obj');
const newObject = mapObj({ foo: 'bar' }, (key, value) => [key.toUpperCase(), value.repeat(3)]);Deep mapping
map-obj supports deep mapping, which means you can apply the mapping function recursively to nested objects.
const mapObj = require('map-obj');
const newObject = mapObj({ foo: { bar: 'baz' } }, (key, value) => [key, value], { deep: true });Target option
You can specify a target object to which the mapped properties will be assigned. This allows you to merge the new properties with an existing object.
const mapObj = require('map-obj');
const target = { existing: 'prop' };
const newObject = mapObj({ foo: 'bar' }, (key, value) => [key, value], { target });lodash.mapkeys is a method from the Lodash library that allows you to create an object with the same values as the original object but with keys mapped using a provided function. It is similar to map-obj but is part of the larger Lodash utility library.
object-map is a package that provides a function to map the values of an object to new values based on a provided function. It is similar to map-obj but focuses only on mapping values, not keys.
deep-map-object is a package that allows deep mapping of object keys and values. It is similar to map-obj's deep mapping feature but is specifically designed for deep transformations.
Readme
Map object keys and values into a new object
$ npm install --save map-obj
var mapObj = require('map-obj');
var newObject = mapObj({foo: 'bar'}, function (key, value, object) {
// first element is the new key and second is the new value
// here we reverse the order
return [value, key];
});
//=> {bar: 'foo'}
MIT © Sindre Sorhus
FAQs
Map object keys and values into a new object
We found that map-obj demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
CISA launched a new project called Vulnrichment to enrich CVEs with details that help prioritize patching and mitigation efforts, as the NVD backlog of unenriched CVEs awaiting analysis surpasses 10,000.
Security News
Socket is joining forces with CISA and other industry leaders at the RSA Conference to sign the Secure by Design pledge, committing to uphold the highest security standards in our products.
Research
The Socket research team breaks down a sampling of malicious packages that download and execute files, among other suspicious behaviors, targeting the popular Discord platform.