Eric Bailey
38 lines
1.0 KiB
TypeScript
38 lines
1.0 KiB
TypeScript
const PERSISTED_STORAGE_LOCK = 'bsky-persisted-storage'
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const SESSION_LOCK_PREFIX = 'bsky-session:'
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export function runWithSessionCredentialLock<T>({
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accountDids,
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operation,
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}: {
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accountDids: string[]
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operation: () => T | Promise<T>
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}): Promise<T> {
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const lockManager = navigator.locks
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if (!lockManager) {
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try {
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return Promise.resolve(operation())
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} catch (error) {
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return Promise.reject(
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error instanceof Error
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? error
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: new Error('Session credential operation failed', {cause: error}),
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)
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}
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}
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const accountLockNames = [...new Set(accountDids)]
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.sort()
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.map(did => `${SESSION_LOCK_PREFIX}${did}`)
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/* All values share one localStorage blob, so every write also takes its lock. */
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const lockNames = [PERSISTED_STORAGE_LOCK, ...accountLockNames]
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const run = (index: number): Promise<T> => {
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const lockName = lockNames[index]
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if (!lockName) return Promise.resolve(operation())
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return lockManager.request(lockName, () => run(index + 1))
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}
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return run(0)
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}
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