You've written retry logic. It probably looks something like this:
async function withRetry(fn, retries = 3) {
for (let i = 0; i < retries; i++) {
try {
return await fn();
You've written retry logic. It probably looks something like this: async function withRetry(fn,...
You've written retry logic. It probably looks something like this:
async function withRetry(fn, retries = 3) {
for (let i = 0; i < retries; i++) {
try {
return await fn();

Few lines of code look more innocent than this: retry(3) Enter fullscreen mode ...

advanceTimersByTime moves the clock but not the microtask queue. That mismatch is why your timer test hangs on a promise that…

Every async function you write assumes the network cooperates, the server responds, and the database...

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You're sending an email. The SMTP server hiccups. Your code throws. The email never sends. Nobody...