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rOACCT/node_modules/mime/mime.js
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mime.js
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			var path = require('path');
			var fs = require('fs');

			function Mime() {
			// Map of extension -> mime type
			this.types = Object.create(null);

			// Map of mime type -> extension
			this.extensions = Object.create(null);
			}

			/**
			* Define mimetype -> extension mappings. Each key is a mime-type that maps
			* to an array of extensions associated with the type. The first extension is
			* used as the default extension for the type.
			*
			* e.g. mime.define({'audio/ogg', ['oga', 'ogg', 'spx']});
			*
			* @param map (Object) type definitions
			*/
			Mime.prototype.define = function (map) {
			for (var type in map) {
			var exts = map[type];
			for (var i = 0; i < exts.length; i++) {
			if (process.env.DEBUG_MIME && this.types[exts[i]]) {
			console.warn((this._loading \|\| "define()").replace(/.*\//, ''), 'changes "' + exts[i] + '" extension type from ' +
			this.types[exts[i]] + ' to ' + type);
			}

			this.types[exts[i]] = type;
			}

			// Default extension is the first one we encounter
			if (!this.extensions[type]) {
			this.extensions[type] = exts[0];
			}
			}
			};

			/**
			* Load an Apache2-style ".types" file
			*
			* This may be called multiple times (it's expected). Where files declare
			* overlapping types/extensions, the last file wins.
			*
			* @param file (String) path of file to load.
			*/
			Mime.prototype.load = function(file) {
			this._loading = file;
			// Read file and split into lines
			var map = {},
			content = fs.readFileSync(file, 'ascii'),
			lines = content.split(/[\r\n]+/);

			lines.forEach(function(line) {
			// Clean up whitespace/comments, and split into fields
			var fields = line.replace(/\s#.\|^\s\|\s$/g, '').split(/\s+/);
			map[fields.shift()] = fields;
			});

			this.define(map);

			this._loading = null;
			};

			/**
			* Lookup a mime type based on extension
			*/
			Mime.prototype.lookup = function(path, fallback) {
			var ext = path.replace(/^.*[\.\/\\]/, '').toLowerCase();

			return this.types[ext] \|\| fallback \|\| this.default_type;
			};

			/**
			* Return file extension associated with a mime type
			*/
			Mime.prototype.extension = function(mimeType) {
			var type = mimeType.match(/^\s([^;\s])(?:;\|\s\|$)/)[1].toLowerCase();
			return this.extensions[type];
			};

			// Default instance
			var mime = new Mime();

			// Define built-in types
			mime.define(require('./types.json'));

			// Default type
			mime.default_type = mime.lookup('bin');

			//
			// Additional API specific to the default instance
			//

			mime.Mime = Mime;

			/**
			* Lookup a charset based on mime type.
			*/
			mime.charsets = {
			lookup: function(mimeType, fallback) {
			// Assume text types are utf8
			return (/^text\/\|^application\/(javascript\|json)/).test(mimeType) ? 'UTF-8' : fallback;
			}
			};

			module.exports = mime;