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Bruno Pedro 30 January 2013BarcelonaJS node-fs http://www.flickr.com/photos/dippy_duck/4562866718

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Bruno PedroWeb and Cloud Computing Technologist withover ten years’ experience. CTO of Nubera,the company behind GetApp and CloudWork.http://brunopedro.com/

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Summary• Why node-fs?• Polymorphic approach• Who’s using it?• Future plans• Questions

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Why node-fs?• recursively creating directories is a common problem• different libraries and npm packages• none of them was simple and easy to use

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The solution• simple and easy to use library• augments fs functionality • polymorphic approach• available as npm package• should be part of node’s core!

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Polymorphic approach• Function overloading fs +mkdir() +mkdirSync() node-fs +mkdir() +mkdirSync()

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Polymorphic approach• Original fs functions fs.mkdir = function (path, mode, callback) fs.mkdirSync = function (path, mode)

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Polymorphic approach• Ad-hoc polymorphism fs.mkdir = function (path, mode, recursive, callback) fs.mkdirSync = function (path, mode, recursive)

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Example usage $ npm install node-­‐fs

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Example usagevar fs = require(node-­‐fs); //// Example with recursion -­‐-­‐ notice the parameter// right before the callback function.//fs.mkdir(/tmp/example_dir/first/second, 0777, true, function (err) { if (err) { console.log(err); } else { console.log(Directory created); }}); //// Synchronous example with recursion.//fs.mkdirSync(/tmp/example_sync/first/second, 0777, true);

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Who’s using it?• Alibaba.com• Digital Repository of Ireland• VirtuOz

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Future plans• Add more fs operations • unlink, rmdir, chmod, chown, [lf]*stat• node-pfs: parallel fs operations• Wanna help? Fork node-fs!

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Questions? Thank you!