25 lines
507 B
JavaScript
25 lines
507 B
JavaScript
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'use strict';
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var isUtf8 = require('is-utf8');
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var stripBom = module.exports = function (arg) {
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if (typeof arg === 'string') {
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return arg.replace(/^\ufeff/g, '');
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}
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if (Buffer.isBuffer(arg) && isUtf8(arg) &&
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arg[0] === 0xef && arg[1] === 0xbb && arg[2] === 0xbf) {
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return arg.slice(3);
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}
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return arg;
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};
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stripBom.stream = function () {
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var firstChunk = require('first-chunk-stream');
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return firstChunk({minSize: 3}, function (chunk, enc, cb) {
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this.push(stripBom(chunk));
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cb();
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});
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};
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