正常情况：

1. 目录结构 'app/javascript/components/Users.js'
   
2. 调用 <%= react_component("Users", users: @users) %>

异常情况：

1. 目录结构 'app/javascript/components/users/Users.js'
   
2. 调用 <%= react_component("users/Users", users: @users) %>
3. error message: Can't find component 'users/Users'

在 application.js 中代码如下：

console.log('Hello World from Webpacker')
// Support component names relative to this directory:
var componentRequireContext = require.context("components", true)
var ReactRailsUJS = require("react_ujs")
ReactRailsUJS.useContext(componentRequireContext)