kubernetes/third_party/ui/bower_components/modernizr/feature-detects/file-filesystem.js

// Filesystem API
// dev.w3.org/2009/dap/file-system/file-dir-sys.html

// The API will be present in Chrome incognito, but will throw an exception.
// See crbug.com/93417
//
// By Eric Bidelman (@ebidel)

Modernizr.addTest('filesystem', !!Modernizr.prefixed('requestFileSystem', window));