React-router的路由系统内部中使用的是 path-to-regexp 解析匹配路由参数。具体用法如下
const { pathToRegexp } = require("path-to-regexp")
const regexp = pathToRegexp("/:foo/:bar");
// keys = [{ name: 'foo', prefix: '/', ... }, { name: 'bar', prefix: '/', ... }]
regexp.exec("/test/route");
//=> [ '/test/route', 'test', 'route', index: 0, input: '/test/route', groups: undefined ]