28 lines
605 B
JavaScript
28 lines
605 B
JavaScript
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/*!
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* remove-bom-buffer <https://github.com/jonschlinkert/remove-bom-buffer>
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*
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* Copyright (c) 2015-2017, Jon Schlinkert.
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* Released under the MIT License.
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*/
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'use strict';
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var isUTF8 = require('is-utf8');
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var isBuffer = require('is-buffer');
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function matchBOM(buf) {
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return buf[0] === 0xEF && buf[1] === 0xBB && buf[2] === 0xBF;
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}
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function maybeUTF8(buf) {
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// Only "maybe" because we aren't sniffing the whole buffer
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return isUTF8(buf.slice(3, 7));
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}
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module.exports = function(buf) {
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if (isBuffer(buf) && matchBOM(buf) && maybeUTF8(buf)) {
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return buf.slice(3);
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}
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return buf;
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};
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