@wanghonggan/uv-ui/libs/luch-request/helpers/isAbsoluteURL.js

uv-ui 破釜沉舟之兼容vue3+2、nvue、app、h5、小程序等多端基于uni-app和uView2.x的生态框架，支持单独导入，开箱即用，利剑出击。

'use strict'

/**
 * Determines whether the specified URL is absolute
 *
 * @param {string} url The URL to test
 * @returns {boolean} True if the specified URL is absolute, otherwise false
 */
export default function isAbsoluteURL(url) {
  // A URL is considered absolute if it begins with "<scheme>://" or "//" (protocol-relative URL).
  // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed
  // by any combination of letters, digits, plus, period, or hyphen.
  return /^([a-z][a-z\d+\-.]*:)?\/\//i.test(url)
}