Benchmark: check property existence

Script Preparation code:

const obj = {
  string: 'string',
  number: 7,
  boolean: true,
};

Tests:

access or missing
obj.string ?? false; obj.number ?? false; obj.boolean ?? false; obj.never ?? false;
check before access
'string' in obj && obj.string; 'number' in obj && obj.number; 'boolean' in obj && obj.boolean; 'never' in obj && obj.never;

Rendered benchmark preparation results:

Previous results

Test case name	Result
access or missing
check before access

Latest run results:

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check property existence (version: 1)