先在 React Expo 專案裡按照下列路徑建立資料夾
mkdir -p modules/notification_progress

建立 / 更新位於自訂 Module 資料夾內的 package.json 檔案

// modules/notification_progress/package.json
{
  "name": "notification_progress",
  "version": "1.0.0",
  "description": "Notification Progress module for Expo",
  "main": "index.js",
  "expo": {
    "modules": ["expo.modules.notificationprogress.NotificationProgressModule"]
  }
}

package.json for NotificationProgress moduleClick to open text

Create modules/notification_progress/index.js:
javascriptCopyimport { NativeModulesProxy } from 'expo-modules-core';

export default NativeModulesProxy.NotificationProgressModule;

In your main package.json, update the dependency to use the new folder name:
jsonCopy"dependencies": {
// ... other dependencies ...
"notification_progress": "file:modules/notification_progress"
}

Update your Kotlin file locations:
Copymodules/notification_progress/android/src/main/java/expo/modules/notificationprogress/NotificationProgressModule.kt

If you have a build.gradle file, it should be at modules/notification_progress/android/build.gradle.
Update your app.json or app.config.js:
jsonCopy{
"expo": {
"plugins": [
["./modules/notification_progress/android/src/main/java/expo/modules/notificationprogress/NotificationProgressModule"]
]
}
}

When importing in your JavaScript code, use:
javascriptCopyimport NotificationProgressModule from 'notification_progress';

Remember to run yarn install or npm install after making these changes to update your project's dependencies.
Using underscores in folder and package names is completely valid. However, keep in mind a few conventions:

In JavaScript/Node.js, it's more common to use kebab-case for package names (e.g., notification-progress). But underscores work too.
In Kotlin/Java, package names typically use lowercase without underscores (e.g., notificationprogress). But this doesn't affect your folder structure.
Consistency is key. Whatever naming convention you choose, try to stick with it throughout your project.