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lib: reduce overhead of validateObject

Rodrigo Muino Tomonari requested to merge github/fork/H4ad/perf/validate-objects into main

Reducing the number of comparisons and allocations when using validateObject.

                                                               confidence improvement accuracy (*)      (**)     (***)
validators/validate-object.js objectToTest='array' n=100000           ***  28696.95 %    ±1448.43% ±1952.07% ±2591.59%
validators/validate-object.js objectToTest='function' n=100000        ***  28553.34 %    ±1501.99% ±2024.25% ±2687.42%
validators/validate-object.js objectToTest='null' n=100000            ***  25157.86 %    ±1483.43% ±1999.24% ±2654.21%
validators/validate-object.js objectToTest='object' n=100000          ***     60.87 %      ±10.64%   ±14.24%   ±18.70%

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 (***)

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