CloudFunctionsでFirebaseStorageのフォルダーを削除

posts/{uid}/hoge.mp4
userImages/{uid}/pfp.jpeg
postImages/{uid}/postImage.png
があるとする

index.js

const bucket = admin.storage().bucket();
const uid = 'hogehoge';
// delete post storage
bucket.deleteFiles({
    prefix: `posts/${uid}`
});
// delete userImage storage
bucket.deleteFiles({
    prefix: `userImages/${uid}`
});
// delete postImages storage
bucket.deleteFiles({
    prefix: `postImages/${uid}`
});