deadcode

Deadcode shows you source files that are not required anywhere given entry point scripts.

Summary

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Deadcode list all files not required anywhere in your project and let you remove them.

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#### Dynamic requires

Deadcode will ignore dynamic requires but will provide you with a list of files that contain them.

#### Reassigned requires

Deadcode look for import declarations and calls of the _require_ function. In other word if you assign _require_ to another var and use it to load a dependency, it will not handle it.

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``
$ npm add deadcode --save-dev
`

Usage

$ deadcode --list-all
info 5 dependencies found
├─ /Users/dead-code/demo/index.js
├─ /Users/dead-code/demo/a.js
├─ fs
├─ /Users/dead-code/demo/b.js
└─ /Users/dead-code/demo/c.js
warning 1 files with dynamic dependencies found
└─ /Users/dead-code/demo/a.js
warning 1 ignored dependencies found
└─ /Users/dead-code/node_modules/@babel/core/lib/index.js
success 0 unparsed dependencies found
success 0 unresolved dependencies
warning 1 dead files found
└─ /Users/dead-code/demo/d.js

You can get help with:

`
$ deadcode --help
`

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- config: config file to use
- entry: array of entry point files
- ignore: array of pattern matching files to ignore
- src: array of pattern matching source files

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Options could be:

- provided as command options:
`
$ deadcode --ignore="/node_modules/,/__tests__/"
`
- loaded from file using the command option config:
`
$ deadcode --config=".deadcoderc"
`
- read from the deadcode property of your package.json:
`
{
"deadcode": {
"ignore": ["/node_modules/"]
}
}
`

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You should know that:

- Command options override options in config file.
- Config file options override options in package.json.
- If no entry is provided, the main` property of your package.json will be used.

Todo

- resolve dynamic import when possible
- handle reassigned require
- look for dead code in living files