Awesome

node-du

A simple JavaScript / Node.js implementation of du -sb. Available in npm as du.

const du = require('du')

let size = await du('/home/rvagg/.npm/')
console.log(`The size of /home/rvagg/.npm/ is: ${size} bytes`)

Also comes with a dujs command if installed with npm install du -g, just in case du -sb was too many 2 too many characters for you to type.

API: du(directory[, options[, callback]])

• options: An optional options object may be passed as the second argument. Currently there is only two options, a 'filter' function that is passed a full file path and is expected to return a truthy/falsy value to indicate whether the file is included in size calculations and a disk option. If disk is true, then block sizing is used when calculating the size. (get's you closer to real du numbers).
• callback: If you supply a callback you'll get (error, size) called on it. If you don't supply a callback, du() returns a Promise which you can await on for size.

With a filter option:

let size = await du('/tmp/foo.leveldb/', { filter: function (f) { return /\.sst$/.test(f) } })
console.log(`The size of the sst files in /tmp/foo.leveldb/ is: ${size} bytes`)

Licence and Copyright

Copyright (c) 2012 Rod Vagg

Made available under the MIT licence:

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.