react-native/local-cli/link/groupFilesByType.js
Héctor Ramos 4f883bd0bc Restore copyright header
Summary:
Restoring the copyright header on some files, in order to fix an internal lint failure that is raised whenever these files are edited on open source.
Closes https://github.com/facebook/react-native/pull/17912

Differential Revision: D6938189

Pulled By: hramos

fbshipit-source-id: 6447d8ad6d7ecce0ef5f1821f63e44957bbf6d15
2018-02-08 17:52:11 -08:00

37 lines
1.3 KiB
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
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]);
};