在没有android studio的情况下本地运行Flatter web应用程序会引发firebase错误
在本地服务器上成功安装了我的颤振web应用程序后（接下来使用express），我就可以在本地主机上运行我的颤振应用程序了。但是，在访问它时，控制台会显示错误在没有android studio的情况下本地运行Flatter web应用程序会引发firebase错误,firebase,express,flutter,dart,flutter-web,Firebase,Express,Flutter,Dart,Flutter Web,在本地服务器上成功安装了我的颤振web应用程序后（接下来使用express），我就可以在本地主机上运行我的颤振应用程序了。但是，在访问它时，控制台会显示错误 main.dart.js:28998未捕获引用错误：未定义firebase 我假设我需要在我的app.js中安装和引用firebase，但实际上我不知道它是如何完成的（如果真是这样的话）。我试着运行命令npm install firebase，该命令似乎成功地安装了它，但是我仍然收到这个错误 你知道我可能遗漏了什么，或者为什么会出现这个错误
main.dart.js:28998未捕获引用错误：未定义firebaseapp.jsnpm install firebase编辑 这是我当前的index.html，当我在Chrome上通过Android Studio运行该项目时，它工作得非常好
<!DOCTYPE html>
<html>
<head>
<!--
If you are serving your web app in a path other than the root, change the
href value below to reflect the base path you are serving from.
The path provided below has to start and end with a slash "/" in order for
it to work correctly.
Fore more details:
* https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base
-->
<base href="/">
<meta charset="UTF-8">
<meta content="IE=Edge" http-equiv="X-UA-Compatible">
<meta name="description" content="App test">
<!-- iOS meta tags & icons -->
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<meta name="apple-mobile-web-app-title" content="my_app">
<link rel="apple-touch-icon" href="icons/Icon-192.png">
<!-- Favicon -->
<link rel="icon" type="image/png" href="favicon.png"/>
<title>My App</title>
<link rel="manifest" href="manifest.json">
</head>
<body>
<!-- This script installs service_worker.js to provide PWA functionality to
application. For more information, see:
https://developers.google.com/web/fundamentals/primers/service-workers -->
<script>
if ('serviceWorker' in navigator) {
window.addEventListener('flutter-first-frame', function () {
navigator.serviceWorker.register('flutter_service_worker.js');
});
}
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=MyGoogleMapsKey"></script>
<script src="main.dart.js" type="application/javascript"></script>
<!-- The core Firebase JS SDK is always required and must be listed first -->
<script src="https://www.gstatic.com/firebasejs/8.1.1/firebase-app.js"></script>
<!-- TODO: Add SDKs for Firebase products that you want to use
https://firebase.google.com/docs/web/setup#available-libraries -->
<script src="https://www.gstatic.com/firebasejs/7.5.1/firebase-auth.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.5.1/firebase-firestore.js"></script>
<script>
<!-- Your web app's Firebase configuration-->
var firebaseConfig = {
apiKey: "apiKey",
authDomain: "my-app.firebaseapp.com",
databaseURL: "https://myApp.firebaseio.com",
projectId: "my-app",
storageBucket: "my-app.appspot.com",
messagingSenderId: "2243255670923",
appId: "1:3134567819932:web:f09e90ce142l9ikk0d2f27"
};
<!-- Initialize Firebase-->
firebase.initializeApp(firebaseConfig);
</script>
</body>
</html>
我的应用程序
if（导航器中的“serviceWorker”）{
window.addEventListener（'flatter-first-frame'，函数（）{
navigator.serviceWorker.register（'flatter_service_worker.js'）；
});
}
var firebaseConfig={
apiKey：“apiKey”，
authDomain:“我的app.firebaseapp.com”，
数据库URL:“https://myApp.firebaseio.com",
projectId:“我的应用程序”，
storageBucket:“我的app.appspot.com”，
messagingSenderId：“2243255670923”，
appId:“1:3134567819932:web:f09e90ce142l9ikk0d2f27”
};
firebase.initializeApp（firebaseConfig）；
index.htmlmain.dart.js
...
var firebaseConfig={
apiKey：“apiKey”，
authDomain:“我的app.firebaseapp.com”，
数据库URL:“https://myApp.firebaseio.com",
projectId:“我的应用程序”，
storageBucket:“我的app.appspot.com”，
messagingSenderId：“2243255670923”，
appId:“1:3134567819932:web:f09e90ce142l9ikk0d2f27”
};
firebase.initializeApp（firebaseConfig）；
index.htmlflatter runmain.dart.js