reveal unused

Identify unused variables in your javascript code.

cli

reveal-unused works with single files, directories or listed files

$ reveal-unused /path/to/file.js

$ reveal-unused /path/to/file.js /path/to/file2.js /path/to/file3.js

$ reveal-unused /dir

--ignore-params

Comma separated list of function parameters to ignore during unused checks. You often want to know when you forgot to handle err or other parameters, but sometimes you have placeholders (req, res, etc) which you might want to ignore

$ reveal-unused /path/to/file.js --ignore-params req,res,_

api

unused(src)

src is a string of file contents

unused(fs.readFileSync(filePath, 'utf8'))

Returns an array of objects specifying the name, location, and if the variable is a function parameter

{
    name: 'foo',
    loc: {
        line: 1,
        column: 1,
    },
    param: true || false
}

install

yarn global add reveal-unused

npm i -g reveal-unused

License

Library is distributed under the Apache license.