Regex is a cruel companion.

index.js

#!/usr/bin/env node
var validate = require('data-validate');

var protocol = "(https?|ftp)\:\/\/"
var uri = "[^\s/?\.#-]+"
var pattern = new RegExp(protocols + uri)
var valid = validate.is(pattern)('http://example.com')
var invalid = validate.is(pattern)('jesse@example.com')

console.log(
  "valid is: ", valid,
  "\ninvalid is: ", invalid
)