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# `decache` Delete a module from node.js' `require.cache` so you can freshly `require` it again. [](https://travis-ci.org/dwyl/decache) [](http://codecov.io/github/dwyl/decache?branch=master) [](https://github.com/dwyl/decache) [](https://david-dm.org/dwyl/decache) [](https://david-dm.org/dwyl/decache?type=dev) [](https://github.com/dwyl/decache/issues) [](http://hits.dwyl.io/dwyl/decache) In node.js when you `require()` a module, node stores a cached version of the module, so that all subsequent calls to `require()` do not have to reload the module from the filesystem. `decache` ( _**De**lete **Cache**_ ) lets you delete modules from node.js `require()` cache this is useful when _**testing**_ your modules/projects. ## Why? When testing our modules we often need to re-require the module being tested. This makes it easy. ## What? An easy way to delete a cached module. ## How? (_usage_) ### install Install the module from npm: ```sh npm install decache --save-dev ``` ### Use it in your code: ```js // require the decache module: const decache = require('decache'); // require a module that you wrote" let mymod = require('./mymodule.js'); // use your module the way you need to: console.log(mymod.count()); // 0 (the initial state for our counter is zero) console.log(mymod.incrementRunCount()); // 1 // delete the cached module: decache('./mymodule.js'); // mymod = require('./mymodule.js'); // fresh start console.log(mymod.count()); // 0 (back to initial state ... zero) ``` Modules other than `.js`, like for example, `.jsx`, are supported as well. Note that native modules with the `.node` extension are ignored from decaching because they behave unexpectedly when decached. If you have any questions or need more examples, please create a GitHub issue: https://github.com/dwyl/decache/issues ***Thanks***!