如何为 Firebase 存储模拟器播种？
我正在尝试为 Firebase 存储模拟器播种。我已将 json 文件添加到我的项目中，并尝试在播种阶段将此文件上传到存储模拟器：
await firebaseAdmin
.storage()
.bucket()
.upload(path.join('./data/cars.json'), {
destination: `vehicles/cars.json`,
});
不幸的是，这似乎不起作用，我遇到了以下错误：
TypeError：无法读取未定义的属性“length”
我使用
firebase-tools
来实现此目的。
firebaseCli.emulators.start({
project: "project-id",
import: "path-to-file.json"
})
仅当正确设置了 firebase 模拟器并且您尝试导入的数据具有正确的格式时，此方法才会起作用。
为了使 Firebase 存储模拟器正常工作，您需要在 Admin SDK 中对其进行初始化：
firebaseAdmin.initializeApp({
credential: firebaseAdmin.credential.cert('path/to/credential'),
storageBucket: "bucket-name",
});
如果您使用 Firebase CLI 启动模拟器，则可以使用选项
--export-on-exit=./data-dir
和
--import=./data-dir
，如这里所述
https://firebase.google.com/docs/emulator-suite/install_and_configure#startup
似乎还有一个
emulators:export
命令您可以尝试一下。
--export-on-exit=
Optional . Use with the Authentication, Cloud Firestore, Realtime Database or Cloud Storage for Firebase emulator. Instruct the emulator(s) to export data to a directory when shutdown occurs, as described for the emulators:export command. The export directory can be specified with this flag: firebase emulators:start --export-on-exit=./saved-data . If --import is used, the export path defaults to the same; for example: firebase emulators:start --import=./data-path --export-on-exit . Lastly, if desired, pass different directory paths to the --import and --export-on-exit flags.
--import=import_directory
Optional . Use with the Authentication, Cloud Firestore, Realtime Database or Cloud Storage for Firebase emulator. Import data saved using the --export-on-exit startup option or the emulators:export command to a running Authentication, Cloud Firestore, Realtime Database or Cloud Storage for Firebase emulator instance. Any data currently in emulator memory will be overwitten.