Sophie Alpert 1490ab12ef Update license headers for MIT license
Summary:
Includes React Native and its dependencies Fresco, Metro, and Yoga. Excludes samples/examples/docs.

find: ^(?:( *)|( *(?:[\*~#]|::))( )? *)?Copyright (?:\(c\) )?(\d{4})\b.+Facebook[\s\S]+?BSD[\s\S]+?(?:this source tree|the same directory)\.$
replace: $1$2$3Copyright (c) $4-present, Facebook, Inc.\n$2\n$1$2$3This source code is licensed under the MIT license found in the\n$1$2$3LICENSE file in the root directory of this source tree.

Reviewed By: TheSavior, yungsters

Differential Revision: D7007050

fbshipit-source-id: 37dd6bf0ffec0923bfc99c260bb330683f35553e
2018-02-16 18:31:53 -08:00

44 lines
1.0 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.
*
* @providesModule truncate
* @flow
*/
'use strict';
type truncateOptions = {
breakOnWords: boolean,
minDelta: number,
elipsis: string,
}
const defaultOptions = {
breakOnWords: true,
minDelta: 10, // Prevents truncating a tiny bit off the end
elipsis: '...',
};
// maxChars (including ellipsis)
const truncate = function(
str: ?string,
maxChars: number,
options: truncateOptions
): ?string {
options = Object.assign({}, defaultOptions, options);
if (str && str.length &&
str.length - options.minDelta + options.elipsis.length >= maxChars) {
str = str.slice(0, maxChars - options.elipsis.length + 1);
if (options.breakOnWords) {
var ii = Math.max(str.lastIndexOf(' '), str.lastIndexOf('\n'));
str = str.slice(0, ii);
}
str = str.trim() + options.elipsis;
}
return str;
};
module.exports = truncate;