Method check

lib/value.js:83–90

* Is declaration need to be prefixed

(decl)

   * Is declaration need to be prefixed
   */
  check(decl) {
    let value = decl.value
    if (!value.includes(this.name)) {
      return false
    }

    return !!value.match(this.regexp())
  }

  /**
   * Return function to fast find prefixed value