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imodel-transformer (iTwin)MCADConfidence: Medium

the iModel transformer throws on source or target models over about 16.7 million elements because two caches use plain JS Set and Map; earlier versions handled larger models.

Impact Analysis

Persona
Mechanical Designer
Team Size Impact
5x Multiplier
Prototype Delay
3 Days
Est. Annual Cost
$30,000
  • 1 user · 1 month240 min
  • Rest of team960 min
  • Rest of year13,200 min

monthly_minutes × 12 × team_multiplier ÷ 60 × $75/hr = $30k/yr

$75/hr assumed rate.

Annual team-minutes decomposed from the reported monthly inputs.

Evidence & Sources

1 Sources
iTwin/imodel-transformer Issue #481: Transformer has a hidden 16.7 million element limit on source and target iModels
github.com
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Analyst Notes

From the Grok pain-radar digest, Oct 25-26 2026 (Oct 25 daytime to Oct 26 morning slots). Verified live 2026-10-26: issue/PR read on GitHub; title and state confirmed.