time

gistfile1.js

// matchfilters performance: https://github.com/yarnpkg/yarn/blob/master/src/util/filter.js#L96

const path = require('path');

let filter = {
    base: 'node_modules/xml-escape',
    isNegation: false,
    regex: /^(?:(?!\.)(?=.)[^\/]*?\.seed)$/i
  },
  basename = 'branches',
  loc = '.git/branches'

let startTime = Date.now()

if (filter.base && filter.base !== '.') {
  loc = path.relative(filter.base, loc);
}
filter.regex.test(loc) ||
filter.regex.test(`/${loc}`) ||
filter.regex.test(basename);

console.log('timediff', Date.now() - startTime);

>>> timediff 19ms