Function isValidPort

github-actions/browserstack/set-browserstack-env.js:1228–1231

(port)

        return url;
      }
      function isValidPort(port) {
        const value = parseInt(port, 10);
        return value === Number(port) && value >= 0 && value <= 65535;
      }
      function isHttpOrHttpsPrefixed(value) {
        return value != null && value[0] === "h" && value[1] === "t" && value[2] === "t" && value[3] === "p" && (value[4] === ":" || value[4] === "s" && value[5] === ":");
      }