Skip to content

fix(storage): Fix getDownloadURL permission error when connected to emulator #3035

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
amalej wants to merge 1 commit into
base: main
Choose a base branch
from
Open

fix(storage): Fix getDownloadURL permission error when connected to emulator #3035

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 8 additions & 1 deletion src/storage/index.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -75,7 +75,14 @@ export async function getDownloadURL(file: File): Promise<string> {
const endpoint =
(process.env.STORAGE_EMULATOR_HOST ||
'https://firebasestorage.googleapis.com') + '/v0';
const { downloadTokens } = await getFirebaseMetadata(endpoint, file);
const headers = process.env.STORAGE_EMULATOR_HOST
? { Authorization: 'Bearer owner' }
Copy link

@gemini-code-assist gemini-code-assist bot Dec 15, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

medium

The string 'Bearer owner' is a special value used to bypass security rules in the Firebase emulator. Adding a brief comment here would improve code clarity for future maintainers who might not be familiar with this emulator-specific behavior.

Suggested change
? { Authorization: 'Bearer owner' }
? { Authorization: 'Bearer owner' } // Bypass emulator security rules

: undefined;
const { downloadTokens } = await getFirebaseMetadata(
endpoint,
file,
headers
);
if (!downloadTokens) {
throw new FirebaseError({
code: 'storage/no-download-token',
Expand Down
4 changes: 3 additions & 1 deletion src/storage/utils.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,8 @@ export interface FirebaseMetadata {

export function getFirebaseMetadata(
endpoint: string,
file: File
file: File,
headers?: { [key: string]: string }
): Promise<FirebaseMetadata> {
const uri = `${endpoint}/b/${file.bucket.name}/o/${encodeURIComponent(
file.name
Expand All @@ -30,6 +31,7 @@ export function getFirebaseMetadata(
{
method: 'GET',
uri,
headers,
},
(err, body) => {
if (err) {
Expand Down