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// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: Node.js contributors. All rights reserved.
// Modified from https://github.com/nodejs/node/blob/78680c1cbc8b0c435963bc512e826b2a6227c315/lib/internal/encoding.js
/**
* Trims ASCII whitespace from a string.
* `String.prototype.trim` removes non-ASCII whitespace.
*
* @param {string} label the label to trim
* @returns {string}
*/
export const trimAsciiWhitespace = label => {
let s = 0;
let e = label.length;
while (
s < e &&
(label[s] === '\u0009' ||
label[s] === '\u000a' ||
label[s] === '\u000c' ||
label[s] === '\u000d' ||
label[s] === '\u0020')
)
s++;
while (
e > s &&
(label[e - 1] === '\u0009' ||
label[e - 1] === '\u000a' ||
label[e - 1] === '\u000c' ||
label[e - 1] === '\u000d' ||
label[e - 1] === '\u0020')
)
e--;
return label.slice(s, e);
};
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