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<picture> <source media="(prefers-color-scheme: dark)" srcset="media/logo_dark.svg"> <img alt="mimic-function logo" src="media/logo.svg" width="400"> </picture> <br> > Make a function mimic another one Useful when you wrap a function in another function and you would like to preserve the original name and other properties. ## Install ```sh npm install mimic-function ``` ## Usage ```js import mimicFunction from 'mimic-function'; function foo() {} foo.unicorn = '🦄'; function wrapper() { return foo(); } console.log(wrapper.name); //=> 'wrapper' mimicFunction(wrapper, foo); console.log(wrapper.name); //=> 'foo' console.log(wrapper.unicorn); //=> '🦄' console.log(String(wrapper)); //=> '/* Wrapped with wrapper() */\nfunction foo() {}' ``` ## API ### mimicFunction(to, from, options?) Modifies the `to` function to mimic the `from` function. Returns the `to` function. `name`, `displayName`, and any other properties of `from` are copied. The `length` property is not copied. Prototype, class, and inherited properties are copied. `to.toString()` will return the same as `from.toString()` but prepended with a `Wrapped with to()` comment. #### to Type: `Function` Mimicking function. #### from Type: `Function` Function to mimic. #### options Type: `object` ##### ignoreNonConfigurable Type: `boolean`\ Default: `false` Skip modifying [non-configurable properties](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptor#Description) instead of throwing an error. ## Related - [rename-fn](https://github.com/sindresorhus/rename-fn) - Rename a function - [keep-func-props](https://github.com/ehmicky/keep-func-props) - Wrap a function without changing its name and other properties
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