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8 lines
243 B
8 lines
243 B
2 months ago
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var equal = require('buffer-equal')
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var HEADER = Buffer.from([66, 77, 70, 3])
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module.exports = function(buf) {
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if (typeof buf === 'string')
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return buf.substring(0, 3) === 'BMF'
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return buf.length > 4 && equal(buf.slice(0, 4), HEADER)
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}
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