Service built using express, without using a view engine, set the project directory to static:

app.use(express.static(__dirname + '/public'));
app.use(express.static(__dirname + '/view'));
app.use(express.static(__dirname + '/node_modules'));

The node entry file index.js is in the root directory, and the directory structure is:

/
/index.js
/public
/view
/view/index.html（首页）
/view/sidebar.html（侧边菜单）
/public/js/app.js（首页的js文件）

index.html is introduced as follows:

<script src="angular/angular.min.js"></script>
<script src="angular-route/angular-route.min.js"></script>
<script src="js/app.js"></script>

index.html directive is as follows:

<my-sidebar></my-sidebar>

app.js is as follows:

var app = angular.module("myBlog", ["ngRoute"]);
app.directive("mySidebar", function () {
    return  {
        restrict: "E",
        replace: true,
        templateURL: "sidebar.html",
    }
})

After testing, it was found that templateURL did not work. How should I write this path, or how to check what the templateURL here is parsed into?