Reproducible experiment
Production locale-profile scan
Method
Repeat a fixed mix of canonical and deliberately rejected locale tags.
Result
{
"id": "locale-profile-scan",
"status": "PASS",
"metrics": {
"total": 100000,
"accepted": 60000,
"rejected": 40000,
"elapsed_ms": 2.524
}
}Environment
{
"node": "v24.14.1",
"platform": "win32",
"arch": "x64",
"cpu_model": "Intel(R) Core(TM) Ultra 7 155H",
"logical_cpus": 22,
"total_memory_gib": 31.5
}Limitations
The bounded language-script-region profile is not the full BCP 47 grammar or registry.