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'use strict';
const htmlCommentRegex = require('html-comment-regex');
function isBinary(buf) {
const isBuf = Buffer.isBuffer(buf);
for (let i = 0; i < 24; i++) {
const charCode = isBuf ? buf[i] : buf.charCodeAt(i);
if (charCode === 65533 || charCode <= 8) {
return true;
}
}
return false;
}
const regex = /^\s*(?:<\?xml[^>]*>\s*)?(?:<!doctype svg[^>]*\s*(?:\[?(?:\s*<![^>]*>\s*)*\]?)*[^>]*>\s*)?<svg[^>]*>[^]*<\/svg>\s*$/i;
module.exports = input => Boolean(input) && !isBinary(input) && regex.test(input.toString().replace(htmlCommentRegex, ''));