object.fromentries
Advanced tools
Package description
The object.fromentries npm package is a polyfill for the Object.fromEntries() method, which transforms a list of key-value pairs into an object. This is particularly useful for converting Map objects or arrays of arrays into object literals, allowing for easy manipulation and access of data structures.
Converting Map to Object
This feature allows for the conversion of Map objects to plain objects, making it easier to work with and access data stored in Maps.
const map = new Map([['foo', 'bar'], ['baz', 42]]);
const obj = Object.fromEntries(map);
console.log(obj); // Output: { foo: 'bar', baz: 42 }Converting Array of Arrays to Object
This feature enables the transformation of an array of arrays (each inner array representing a key-value pair) into an object, simplifying the process of creating objects from structured data arrays.
const entries = [['foo', 'bar'], ['baz', 42]];
const obj = Object.fromEntries(entries);
console.log(obj); // Output: { foo: 'bar', baz: 42 }Lodash's _.fromPairs() method offers similar functionality to Object.fromEntries by converting an array of key-value pairs into an object. While lodash.frompairs provides this as part of a larger utility library, object.fromentries focuses solely on this conversion feature.
Ramda's R.fromPairs function also converts an array of key-value pairs into an object. Compared to object.fromentries, Ramda offers this functionality within a functional programming context, providing a broader set of tools for data transformation and manipulation.
Changelog
v2.0.6 - 2022-11-06
867603dauto-changelog 3621c90eslint, @ljharb/eslint-config, @es-shims/api, safe-publish-latest, tape d6c3de7define-properties, es-abstract a0eca6691df159e7f2c96eslint, @ljharb/eslint-config, aud, tape ec22968es-abstracthas depprepublishOnly script for npm 7+eslint, @ljharb/eslint-config, @es-shims/api, aud, tapenode/install instead of node/run; use codecov actioncall-bind, es-abstracteslint, @ljharb/eslint-config, aud, has-strict-mode, tapees-abstract; remove function-bind; use call-bind where applicableeslint, @ljharb/eslint-config, tape; add aud, safe-publish-latestpull_request_target eventnyc on all testsimplementation test; run es-shim-api in postlint; use tape runneres-abstract (63% bundle size decrease)eslint, @ljharb/eslint-configfunding fieldObject.fromEntries when already presentdefine-properties, es-abstract, haseslint, @ljharb/eslint-config, covert, tapenode v12.9, v11.15, v10.16, v9.11, v8.16, v6.17, v4.9npx aud instead of nsp or npm audit with hoopsiterable is nullishReadme
An ES spec-proposal-compliant Object.fromEntries shim. Invoke its "shim" method to shim Object.fromEntries if it is unavailable or noncompliant.
This package implements the es-shim API interface. It works in an ES3-supported environment and complies with the proposed spec.
Most common usage:
var assert = require('assert');
var fromEntries = require('object.fromentries');
var obj = { a: 1, b: 2, c: 3 };
var actual = fromEntries(Object.entries(obj));
assert.deepEqual(obj, actual);
if (!Object.fromEntries) {
fromEntries.shim();
}
assert.deepEqual(Object.fromEntries(Object.entries(obj)), obj);
Simply clone the repo, npm install, and run npm test
FAQs
ES proposal-spec-compliant Object.fromEntries shim.
The npm package object.fromentries receives a total of 18,041,169 weekly downloads. As such, object.fromentries popularity was classified as popular.
We found that object.fromentries demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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