lib: use spawn options for timeout in execFile
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Timeout support was added to
spawnin v15.13.0 (PR), butexecFilehas continued to use its own mechanism to implement the timeout functionality, which is now basically replicating the logic added tospawn.This PR removes the repeated logic from
execFileand delegates timeout handling tospawninstead. It does so by forwarding the optionstimeoutandkillSignal.The only visible change I can think of is a different order of parameter validation in
execFile, which means a possibly different error message in the case that bothtimeoutand at least another option are passed invalid values. Looking at the other functions in child_process and their tests, and after reading the documentation, it seems to me though that no particular order of parameter validation is being enforced, so I guess this change would have no significant impact.No functionality was added or removed. All tests are still passing.