fs: use fast api calls for `existsSync`
Currently, It takes the fast route when path
string is represented as a OneByteString in V8.
confidence improvement accuracy (*) (**) (***)
fs/bench-existsSync.js n=1000000 type='existing' *** 2.87 % ±0.68% ±0.91% ±1.19%
fs/bench-existsSync.js n=1000000 type='non-existing' *** 43.04 % ±1.17% ±1.56% ±2.03%
fs/bench-existsSync.js n=1000000 type='non-flat-existing' *** 2.63 % ±0.42% ±0.56% ±0.73%
n=1000000 type='non-existing' 836103.841448331 NA NaN % NA NA NA
Be aware that when doing many comparisons the risk of a false-positive result increases.
In this case, there are 4 comparisons, you can thus expect the following amount of false-positive results:
0.20 false positives, when considering a 5% risk acceptance (*, **, ***),
0.04 false positives, when considering a 1% risk acceptance (**, ***),
0.00 false positives, when considering a 0.1% risk acceptance (***)