37 lines
1.2 KiB
JavaScript
37 lines
1.2 KiB
JavaScript
/**
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*
|
|
* @format
|
|
*/
|
|
|
|
const groupBy = require('lodash').groupBy;
|
|
const mime = require('mime');
|
|
|
|
/**
|
|
* Since there are no officially registered MIME types
|
|
* for ttf/otf yet http://www.iana.org/assignments/media-types/media-types.xhtml,
|
|
* we define two non-standard ones for the sake of parsing
|
|
*/
|
|
mime.define({
|
|
'font/opentype': ['otf'],
|
|
'font/truetype': ['ttf'],
|
|
});
|
|
|
|
/**
|
|
* Given an array of files, it groups it by it's type.
|
|
* Type of the file is inferred from it's mimetype based on the extension
|
|
* file ends up with. The returned value is an object with properties that
|
|
* correspond to the first part of the mimetype, e.g. images will be grouped
|
|
* under `image` key since the mimetype for them is `image/jpg` etc.
|
|
*
|
|
* Example:
|
|
* Given an array ['fonts/a.ttf', 'images/b.jpg'],
|
|
* the returned object will be: {font: ['fonts/a.ttf'], image: ['images/b.jpg']}
|
|
*/
|
|
module.exports = function groupFilesByType(assets) {
|
|
return groupBy(assets, type => mime.lookup(type).split('/')[0]);
|
|
};
|