@vue/shared

What is @vue/shared?

The @vue/shared package is a collection of utility functions used by Vue.js itself and can be leveraged in Vue.js projects or any other project where these utilities might be useful. It includes functions for object manipulation, type checking, and more, aiming to provide a lightweight and efficient set of tools for common programming tasks.

What are @vue/shared's main functionalities?

Type Checking

Provides functions to check the type of a variable, such as whether it is an object, string, function, etc. This is useful for ensuring that variables match expected types before performing operations on them.

import { isObject } from '@vue/shared';
console.log(isObject({})); // true
console.log(isObject(null)); // false

Object Manipulation

Includes functions to manipulate objects, such as extending one object with properties from another. This is useful for merging objects or copying properties.

import { extend } from '@vue/shared';
const obj1 = { a: 1 };
const obj2 = { b: 2 };
extend(obj1, obj2);
console.log(obj1); // { a: 1, b: 2 }

String Capitalization

Provides simple string manipulation functions like capitalizing the first letter of a string. Useful for formatting text.

import { capitalize } from '@vue/shared';
console.log(capitalize('hello')); // 'Hello'

Other packages similar to @vue/shared

lodash

Lodash is a comprehensive utility library offering a wide range of functions for tasks including object manipulation, array manipulation, string manipulation, and more. It's more extensive than @vue/shared but also larger in size, making it more suitable for projects where a wide variety of utility functions are needed.

ramda

Ramda is a functional programming utility library focused on simplicity and immutability. While it shares some functionality with @vue/shared, such as object manipulation, Ramda emphasizes a functional programming approach, offering tools for creating pipelines and composing functions.

README

@vue/shared

Internal utility functions and constants shared across @vue packages.

Changelog

3.5.18 (2025-07-23)

Bug Fixes

• compiler-core: avoid cached text vnodes retaining detached DOM nodes (#13662) (00695a5), closes #13661
• compiler-core: avoid self updates of v-pre (#12556) (21b685a)
• compiler-core: identifiers in function parameters should not be inferred as references (#13548) (9b02923)
• compiler-core: recognize empty string as non-identifier (#12553) (ce93339)
• compiler-core: transform empty v-bind dynamic argument content correctly (#12554) (d3af67e)
• compiler-sfc: transform empty srcset w/ includeAbsolute: true (#13639) (d8e40ef), closes vitejs/vite-plugin-vue#631
• css-vars: nullish v-bind in style should not lead to unexpected inheritance (#12461) (c85f1b5), closes #12434 #12439 #7474 #7475
• custom-element: ensure exposed methods are accessible from custom elements by making them enumerable (#13634) (90573b0), closes #13632
• hydration: prevent lazy hydration for updated components (#13511) (a9269c6), closes #13510
• runtime-core: ensure correct anchor el for unresolved async components (#13560) (7f29943), closes #13559
• slots: refine internal key checking to support slot names starting with an underscore (#13612) (c5f7db1), closes #13611
• ssr: ensure empty slots render as a comment node in Transition (#13396) (8cfc10a), closes #13394