Simplistic matching of Express style URL parameters NOT using Regex.

matchPathToUrl.js

function matchPathToUrl(path, url) {
  const sanitizedUrl = url[0] == '/' ? url.substring(1) : url
  const sanitizedPath = path[0] == '/' ? path.substring(1) : path
  const sanitizedUrlParts = sanitizedUrl.split('/')
  const sanitizedPathParts = sanitizedPath.split('/')
  const pathBoundaries = sanitizedPath.split('/').map(part => part[0] == ':' ? -1 : part)
  let values = {}

  const passes = pathBoundaries.reduce((pass, part, index) => {
    if (sanitizedUrlParts.length != sanitizedPathParts.length) return false

    // If the part doesn't equal -1
    // then the 2 should be the same
    // otherwise return false
    if (part != -1) {
      if (sanitizedPathParts[index] != sanitizedUrlParts[index]) return false
    } else {
      // If the part does equal -1
      // then it's a vairable
      // We need to check that it exists
      if (sanitizedUrlParts[index] == undefined || sanitizedUrlParts[index] == null) return false

      values[sanitizedPathParts[index]] = sanitizedUrlParts[index]
    }

    return pass ? true : false
  }, true)

  return { passes, values }
}

// Returns: 
// { passes: true, values: { teamId: '5ce12ae5ffd420dc2f5a6878', roomId: '5ce12ae5ffd420dc2f5a6878' }}
matchPathToUrl(
  '/app/team/:teamId/room/:roomId', 
  '/app/team/5ce12ae5ffd420dc2f5a6878/room/5ce12ae5ffd420dc2f5a6878'
)