While the rocket is inside, technicians will remove and inspect suspected helium system components, update any faulty hardware, and perform other work. That includes replacing batteries in the flight termination system — the emergency system that can destroy the rocket if it strays off course — swapping out a seal on the line that feeds liquid oxygen into the rocket, refreshing items inside Orion, and giving the closeout crew more practice sealing the capsule.
await dropOld.writer.write(chunk3); // ok, chunk1 discarded
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These times might sometimes differ substantially - it is because for some test cases, there is a need to fetch existing data from DB in order to construct test queries. Duration of these additional queries is subtracted from the total test duration: Queries duration = Total test duration - Additional queries duration. Otherwise they would skew results, adding time where it should not be counted.
Minifying and combining JavaScript and CSS files