fromPairs (Lodash compatibility)

Use Object.fromEntries

This fromPairs function operates slowly due to array-like object checks and iteration processing.

Use the faster and more modern Object.fromEntries instead.

Converts an array of key-value pairs into an object.

const result = fromPairs(pairs);

Reference

fromPairs(pairs)

Takes an array of key-value pairs and converts them into an object. Each key-value pair must be an array with 2 elements. The first element becomes the key, and the second element becomes the value. This is useful when organizing or transforming data.

import { fromPairs } from 'es-toolkit/compat';

// Basic key-value pair conversion
const pairs = [
  ['a', 1],
  ['b', 2],
  ['c', 3],
];
const result = fromPairs(pairs);
// Result: { a: 1, b: 2, c: 3 }

// Handling various value types
const mixedPairs = [
  ['name', 'John'],
  ['age', 30],
  ['active', true],
];
const user = fromPairs(mixedPairs);
// Result: { name: 'John', age: 30, active: true }

Values that are null, undefined, or not array-like objects are treated as empty objects.

import { fromPairs } from 'es-toolkit/compat';

fromPairs(null); // {}
fromPairs(undefined); // {}
fromPairs('invalid'); // {}

Parameters

• pairs (ArrayLike<[PropertyName, T]> | ArrayLike<any[]> | null | undefined): An array of key-value pairs to convert into an object.

Returns

(Record<string, any> | Record<string, T>): Returns an object created from the key-value pairs.