index.js
function fastparse (str) {
  if (typeof str !== 'string' || str.charCodeAt(0) !== 0x2f /* / */) {
    return parse(str)
  }

  var pathname = str
  var query = null
  var search = null

  // This takes the regexp from https://github.com/joyent/node/pull/7878
  // Which is /^(\/[^?#\s]*)(\?[^#\s]*)?$/
  // And unrolls it into a for loop
  for (var i = 1; i < str.length; i++) {
    switch (str.charCodeAt(i)) {
      case 0x3f: /* ?  */
        if (search === null) {
          pathname = str.substring(0, i)
          query = str.substring(i + 1)
          search = str.substring(i)
        }
        break
      case 0x09: /* \t */
      case 0x0a: /* \n */
      case 0x0c: /* \f */
      case 0x0d: /* \r */
      case 0x20: /*    */
      case 0x23: /* #  */
      case 0xa0:
      case 0xfeff:
        return parse(str)
    }
  }

  var url = Url !== undefined
    ? new Url()
    : {}

  url.path = str
  url.href = str
  url.pathname = pathname

  if (search !== null) {
    url.query = query
    url.search = search
  }

  return url
}
function fastparse (str) {
  if (typeof str !== 'string' || str.charCodeAt(0) !== 0x2f /* / */) {
    return parse(str)
  }

  var pathname = str
  var query = null
  var search = null

  // This takes the regexp from https://github.com/joyent/node/pull/7878
  // Which is /^(\/[^?#\s]*)(\?[^#\s]*)?$/
  // And unrolls it into a for loop
  for (var i = 1; i < str.length; i++) {
    switch (str.charCodeAt(i)) {
      case 0x3f: /* ?  */
        if (search === null) {
          pathname = str.substring(0, i)
          query = str.substring(i + 1)
          search = str.substring(i)
        }
        break
      case 0x09: /* \t */
      case 0x0a: /* \n */
      case 0x0c: /* \f */
      case 0x0d: /* \r */
      case 0x20: /*    */
      case 0x23: /* #  */
      case 0xa0:
      case 0xfeff:
        return parse(str)
    }
  }

  var url = Url !== undefined
    ? new Url()
    : {}

  url.path = str
  url.href = str
  url.pathname = pathname

  if (search !== null) {
    url.query = query
    url.search = search
  }

  return url
}
function fastparse ( str ) { if ( typeof str !== 'string' || str . charCodeAt ( 0 ) !== 0x2f /* / */ ) { return parse ( str ) } var pathname = str var query = null var search = null // This takes the regexp from https://github.com/joyent/node/pull/7878 // Which is /^(\/[^?#\s]*)(\?[^#\s]*)?$/ // And unrolls it into a for loop for ( var i = 1 ; i < str . length ; i ++ ) { switch ( str . charCodeAt ( i ) ) { case 0x3f : /* ?  */ if ( search === null ) { pathname = str . substring ( 0 , i ) query = str . substring ( i + 1 ) search = str . substring ( i ) } break case 0x09 : /* \t */ case 0x0a : /* \n */ case 0x0c : /* \f */ case 0x0d : /* \r */ case 0x20 : /*    */ case 0x23 : /* #  */ case 0xa0 : case 0xfeff : return parse ( str ) } } var url = Url !== undefined ? new Url ( ) : { } url . path = str url . href = str url . pathname = pathname if ( search !== null ) { url . query = query url . search = search } return url }
Parse the `str` url with fast-path short-cut.

@param {string} str
@return {Object}
@private
Parse the str url with fast - path short - cut .