rochars / utf8-buffer

 * Copyright (c) 2018 Rafael da Silva Rocha.

 *

 * Permission is hereby granted, free of charge, to any person obtaining

 * a copy of this software and associated documentation files (the

 * "Software"), to deal in the Software without restriction, including

 * without limitation the rights to use, copy, modify, merge, publish,

 * distribute, sublicense, and/or sell copies of the Software, and to

 * permit persons to whom the Software is furnished to do so, subject to

 * the following conditions:

 *

 * The above copyright notice and this permission notice shall be

 * included in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 *

 */

/**

 * @fileoverview Externs for utf8-buffer 0.0.1

 * @see https://github.com/rochars/utf8-buffer

 * @externs

 */

/**

 * Read a string of UTF-8 characters from a byte buffer.

 * Invalid characters are replaced with 'REPLACEMENT CHARACTER' (U+FFFD).

 * @see https://encoding.spec.whatwg.org/#the-encoding

 * @see https://stackoverflow.com/a/34926911

 * @param {!Uint8Array|!Array<!number>} buffer A byte buffer.

 * @param {number=} index The index to read.

 * @param {?number=} len The number of bytes to read.

 *    If len is undefined will read until the end of the buffer.

 * @return {string}

 */