defer-await-until-needed

To optimize async/await performance in TypeScript, defer await operations by moving them into specific conditional branches. This prevents blocking execution paths that do not actually require the awaited result, improving overall responsiveness.

Awaiting an async call upfront creates unnecessary blocking because the JavaScript engine waits for the promise to resolve even if subsequent conditional logic skips that result. Deferring the await until strictly necessary eliminates this wasted time.

The best way to conditionally fetch data in JavaScript is to place the await call inside the conditional branch where the processing flag is false, ensuring the fetch operation only executes when its results are strictly necessary.

Yes, you can use deferred await to improve application responsiveness in functions with multiple execution paths. By placing await calls only within the relevant branches, you prevent unnecessary blocking of unrelated code execution.

You should avoid moving await operations into conditional branches if all subsequent execution paths within the async function strictly depend on the awaited result, as deferring provides no performance benefit when the blocking is unavoidable.