265 lines
11 KiB
JavaScript
265 lines
11 KiB
JavaScript
import { supportsLocalStorage } from './helpers';
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/**
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* @experimental
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*/
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export const internals = {
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/**
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* @experimental
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*/
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debug: !!(globalThis &&
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supportsLocalStorage() &&
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globalThis.localStorage &&
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globalThis.localStorage.getItem('supabase.gotrue-js.locks.debug') === 'true'),
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};
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/**
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* An error thrown when a lock cannot be acquired after some amount of time.
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*
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* Use the {@link #isAcquireTimeout} property instead of checking with `instanceof`.
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*
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* @example
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* ```ts
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* import { LockAcquireTimeoutError } from '@supabase/auth-js'
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*
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* class CustomLockError extends LockAcquireTimeoutError {
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* constructor() {
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* super('Lock timed out')
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* }
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* }
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* ```
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*/
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export class LockAcquireTimeoutError extends Error {
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constructor(message) {
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super(message);
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this.isAcquireTimeout = true;
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}
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}
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/**
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* Error thrown when the browser Navigator Lock API fails to acquire a lock.
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*
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* @example
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* ```ts
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* import { NavigatorLockAcquireTimeoutError } from '@supabase/auth-js'
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*
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* throw new NavigatorLockAcquireTimeoutError('Lock timed out')
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* ```
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*/
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export class NavigatorLockAcquireTimeoutError extends LockAcquireTimeoutError {
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}
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/**
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* Error thrown when the process-level lock helper cannot acquire a lock.
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*
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* @example
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* ```ts
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* import { ProcessLockAcquireTimeoutError } from '@supabase/auth-js'
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*
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* throw new ProcessLockAcquireTimeoutError('Lock timed out')
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* ```
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*/
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export class ProcessLockAcquireTimeoutError extends LockAcquireTimeoutError {
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}
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/**
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* Implements a global exclusive lock using the Navigator LockManager API. It
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* is available on all browsers released after 2022-03-15 with Safari being the
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* last one to release support. If the API is not available, this function will
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* throw. Make sure you check availablility before configuring {@link
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* GoTrueClient}.
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*
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* You can turn on debugging by setting the `supabase.gotrue-js.locks.debug`
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* local storage item to `true`.
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*
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* Internals:
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*
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* Since the LockManager API does not preserve stack traces for the async
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* function passed in the `request` method, a trick is used where acquiring the
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* lock releases a previously started promise to run the operation in the `fn`
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* function. The lock waits for that promise to finish (with or without error),
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* while the function will finally wait for the result anyway.
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*
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* @param name Name of the lock to be acquired.
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* @param acquireTimeout If negative, no timeout. If 0 an error is thrown if
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* the lock can't be acquired without waiting. If positive, the lock acquire
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* will time out after so many milliseconds. An error is
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* a timeout if it has `isAcquireTimeout` set to true.
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* @param fn The operation to run once the lock is acquired.
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* @example
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* ```ts
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* await navigatorLock('sync-user', 1000, async () => {
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* await refreshSession()
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* })
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* ```
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*/
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export async function navigatorLock(name, acquireTimeout, fn) {
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if (internals.debug) {
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console.log('@supabase/gotrue-js: navigatorLock: acquire lock', name, acquireTimeout);
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}
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const abortController = new globalThis.AbortController();
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if (acquireTimeout > 0) {
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setTimeout(() => {
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abortController.abort();
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if (internals.debug) {
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console.log('@supabase/gotrue-js: navigatorLock acquire timed out', name);
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}
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}, acquireTimeout);
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}
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// MDN article: https://developer.mozilla.org/en-US/docs/Web/API/LockManager/request
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// Wrapping with await Promise.resolve() is done as some libraries like zone.js
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// patch the Promise object to track execution context. We use await instead of
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// .then() to avoid Firefox content script security errors where accessing .then()
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// on cross-context promises is forbidden.
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await Promise.resolve();
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try {
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return await globalThis.navigator.locks.request(name, acquireTimeout === 0
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? {
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mode: 'exclusive',
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ifAvailable: true,
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}
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: {
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mode: 'exclusive',
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signal: abortController.signal,
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}, async (lock) => {
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if (lock) {
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if (internals.debug) {
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console.log('@supabase/gotrue-js: navigatorLock: acquired', name, lock.name);
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}
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try {
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return await fn();
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}
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finally {
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if (internals.debug) {
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console.log('@supabase/gotrue-js: navigatorLock: released', name, lock.name);
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}
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}
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}
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else {
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if (acquireTimeout === 0) {
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if (internals.debug) {
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console.log('@supabase/gotrue-js: navigatorLock: not immediately available', name);
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}
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throw new NavigatorLockAcquireTimeoutError(`Acquiring an exclusive Navigator LockManager lock "${name}" immediately failed`);
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}
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else {
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if (internals.debug) {
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try {
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const result = await globalThis.navigator.locks.query();
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console.log('@supabase/gotrue-js: Navigator LockManager state', JSON.stringify(result, null, ' '));
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}
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catch (e) {
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console.warn('@supabase/gotrue-js: Error when querying Navigator LockManager state', e);
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}
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}
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// Browser is not following the Navigator LockManager spec, it
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// returned a null lock when we didn't use ifAvailable. So we can
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// pretend the lock is acquired in the name of backward compatibility
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// and user experience and just run the function.
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console.warn('@supabase/gotrue-js: Navigator LockManager returned a null lock when using #request without ifAvailable set to true, it appears this browser is not following the LockManager spec https://developer.mozilla.org/en-US/docs/Web/API/LockManager/request');
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return await fn();
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}
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}
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});
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}
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catch (e) {
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// When the AbortController times out, navigator.locks.request rejects with
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// a DOMException named 'AbortError'. Convert this to NavigatorLockAcquireTimeoutError
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// so callers can check error.isAcquireTimeout as documented.
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if ((e === null || e === void 0 ? void 0 : e.name) === 'AbortError') {
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throw new NavigatorLockAcquireTimeoutError(`Acquiring an exclusive Navigator LockManager lock "${name}" timed out waiting ${acquireTimeout}ms`);
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}
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throw e;
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}
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}
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const PROCESS_LOCKS = {};
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/**
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* Implements a global exclusive lock that works only in the current process.
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* Useful for environments like React Native or other non-browser
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* single-process (i.e. no concept of "tabs") environments.
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*
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* Use {@link #navigatorLock} in browser environments.
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*
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* @param name Name of the lock to be acquired.
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* @param acquireTimeout If negative, no timeout. If 0 an error is thrown if
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* the lock can't be acquired without waiting. If positive, the lock acquire
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* will time out after so many milliseconds. An error is
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* a timeout if it has `isAcquireTimeout` set to true.
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* @param fn The operation to run once the lock is acquired.
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* @example
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* ```ts
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* await processLock('migrate', 5000, async () => {
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* await runMigration()
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* })
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* ```
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*/
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export async function processLock(name, acquireTimeout, fn) {
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var _a;
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const previousOperation = (_a = PROCESS_LOCKS[name]) !== null && _a !== void 0 ? _a : Promise.resolve();
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// Wrap previousOperation to handle errors without using .catch()
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// This avoids Firefox content script security errors
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const previousOperationHandled = (async () => {
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try {
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await previousOperation;
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return null;
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}
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catch (e) {
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// ignore error of previous operation that we're waiting to finish
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return null;
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}
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})();
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const currentOperation = (async () => {
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let timeoutId = null;
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try {
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// Wait for either previous operation or timeout
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const timeoutPromise = acquireTimeout >= 0
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? new Promise((_, reject) => {
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timeoutId = setTimeout(() => {
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console.warn(`@supabase/gotrue-js: Lock "${name}" acquisition timed out after ${acquireTimeout}ms. ` +
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'This may be caused by another operation holding the lock. ' +
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'Consider increasing lockAcquireTimeout or checking for stuck operations.');
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reject(new ProcessLockAcquireTimeoutError(`Acquiring process lock with name "${name}" timed out`));
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}, acquireTimeout);
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})
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: null;
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await Promise.race([previousOperationHandled, timeoutPromise].filter((x) => x));
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// If we reach here, previousOperationHandled won the race
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// Clear the timeout to prevent false warnings
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if (timeoutId !== null) {
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clearTimeout(timeoutId);
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}
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}
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catch (e) {
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// Clear the timeout on error path as well
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if (timeoutId !== null) {
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clearTimeout(timeoutId);
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}
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// Re-throw timeout errors, ignore others
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if (e && e.isAcquireTimeout) {
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throw e;
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}
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// Fall through to run fn() - previous operation finished with error
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}
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// Previous operations finished and we didn't get a race on the acquire
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// timeout, so the current operation can finally start
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return await fn();
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})();
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PROCESS_LOCKS[name] = (async () => {
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try {
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return await currentOperation;
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}
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catch (e) {
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if (e && e.isAcquireTimeout) {
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// if the current operation timed out, it doesn't mean that the previous
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// operation finished, so we need continue waiting for it to finish
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try {
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await previousOperation;
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}
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catch (prevError) {
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// Ignore previous operation errors
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}
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return null;
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}
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throw e;
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}
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})();
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// finally wait for the current operation to finish successfully, with an
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// error or with an acquire timeout error
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return await currentOperation;
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}
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//# sourceMappingURL=locks.js.map
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