go.js

data = require('./data.json')

escape = char => `\\${char}`

special = new RegExp(
  '[' +
  '( ) { } [ ] | \\ ^ $ * + ? .'
    .split``
    .map(escape)
    .join('|') +
  ']', 'g'
)

escapeRegExp = string => string.replace(special, '\\$&')

build = data =>
  '(' + data.reduce((items, cookie) => {
    const {
      pattern,
      name
    } = cookie

    if (pattern) {
      return items.concat(`^${pattern}$`)
    }

    if (name) {
      return items.concat(`^${escapeRegExp(name)}$`)
    }

    return items
  }, []).join('|') + ')'

console.log(build(data))