# @vates/decorate-with [](https://npmjs.org/package/@vates/decorate-with)  [](https://bundlephobia.com/result?p=@vates/decorate-with) [](https://npmjs.org/package/@vates/decorate-with) > Creates a decorator from a function wrapper ## Install Installation of the [npm package](https://npmjs.org/package/@vates/decorate-with): ``` > npm install --save @vates/decorate-with ``` ## Usage ### `decorateWith(fn, ...args)` Creates a new ([legacy](https://babeljs.io/docs/en/babel-plugin-syntax-decorators#legacy)) method decorator from a function decorator, for instance, allows using Lodash's functions as decorators: ```js import { decorateWith } from '@vates/decorate-with' class Foo { @decorateWith(lodash.debounce, 150) bar() { // body } } ``` ### `decorateClass(class, map)` Decorates a number of accessors and methods directly, without using the decorator syntax: ```js import { decorateClass } from '@vates/decorate-with' class Foo { get bar() { // body } set bar(value) { // body } baz() { // body } } decorateClass(Foo, { // getter and/or setter bar: { // without arguments get: lodash.memoize, // with arguments set: [lodash.debounce, 150], }, // method (with or without arguments) baz: lodash.curry, }) ``` The decorated class is returned, so you can export it directly. To apply multiple transforms to an accessor/method, you can either call `decorateClass` multiple times or use [`@vates/compose`](https://www.npmjs.com/package/@vates/compose): ```js decorateClass(Foo, { baz: compose([ [lodash.debounce, 150] lodash.curry, ]) }) ``` ### `perInstance(fn, ...args)` Helper to decorate the method by instance instead of for the whole class. This is often necessary for caching or deduplicating calls. ```js import { perInstance } from '@vates/decorateWith' class Foo { @decorateWith(perInstance, lodash.memoize) bar() { // body } } ``` Because it's a normal function, it can also be used with `decorateClass`, with `compose` or even by itself. ### `decorateMethodsWith(class, map)` > Deprecated alias for [`decorateClass(class, map)`](#decorateclassclass-map). ## Contributions Contributions are _very_ welcomed, either on the documentation or on the code. You may: - report any [issue](https://github.com/vatesfr/xen-orchestra/issues) you've encountered; - fork and create a pull request. ## License [ISC](https://spdx.org/licenses/ISC) © [Vates SAS](https://vates.fr)