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