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55 lines
1.9 KiB
Markdown
55 lines
1.9 KiB
Markdown
# which-module
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> Find the module object for something that was require()d
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[](https://travis-ci.org/nexdrew/which-module)
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[](https://coveralls.io/github/nexdrew/which-module?branch=master)
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[](https://github.com/conventional-changelog/standard-version)
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Find the `module` object in `require.cache` for something that was `require()`d
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or `import`ed - essentially a reverse `require()` lookup.
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Useful for libs that want to e.g. lookup a filename for a module or submodule
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that it did not `require()` itself.
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## Install and Usage
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```
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npm install --save which-module
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```
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```js
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const whichModule = require('which-module')
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console.log(whichModule(require('something')))
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// Module {
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// id: '/path/to/project/node_modules/something/index.js',
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// exports: [Function],
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// parent: ...,
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// filename: '/path/to/project/node_modules/something/index.js',
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// loaded: true,
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// children: [],
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// paths: [ '/path/to/project/node_modules/something/node_modules',
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// '/path/to/project/node_modules',
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// '/path/to/node_modules',
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// '/path/node_modules',
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// '/node_modules' ] }
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```
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## API
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### `whichModule(exported)`
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Return the [`module` object](https://nodejs.org/api/modules.html#modules_the_module_object),
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if any, that represents the given argument in the `require.cache`.
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`exported` can be anything that was previously `require()`d or `import`ed as a
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module, submodule, or dependency - which means `exported` is identical to the
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`module.exports` returned by this method.
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If `exported` did not come from the `exports` of a `module` in `require.cache`,
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then this method returns `null`.
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## License
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ISC © Contributors
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