text: 'use strict';
  module.exports = function (buf) {
  	if (!buf || buf.length < 8) {
  		return false;
  	}
  
  	return true &&
  		// signature
  		buf[0] === 0x77 &&
  		buf[1] === 0x4f &&
  		buf[2] === 0x46 &&
  		buf[3] === 0x46 &&
  		// The "sfnt version" of the original file:
  		// 0x00010000 for TrueType flavored fonts
  		// or 0x4F54544F 'OTTO' for CFF flavored fonts.
  		(
  			buf[4] === 0x00 &&
  			buf[5] === 0x01 &&
  			buf[6] === 0x00 &&
  			buf[7] === 0x00
  		) ||
  		(
  			buf[4] === 0x4F &&
  			buf[5] === 0x54 &&
  			buf[6] === 0x54 &&
  			buf[7] === 0x4F
  		);
  };
  