2026-07-215 min read
`ignoreBuildErrors: true` kept the type checker quiet. Turning it off found twelve product bugs.
UK Calculators had `strict: true` in tsconfig and `ignoreBuildErrors: true` in next.config.mjs. The two settings coexisted for months. One afternoon removing the flag surfaced twelve masked type errors on a YMYL money site where wrong numbers carry real consequences.
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