TypeScript Code Review Patterns

Stack-specific rules loaded by dh:code-reviewer when tsconfig.json, *.ts, or *.tsx files are detected.

Read Review principles before applying these checks; it defines authority, applicability, evidence, and blocking criteria. Also apply Node.js checks for Node execution and Web checks for browser rendering, including TSX; language checks do not replace runtime checks.

Strict Mode

• Apply the project's active compiler gates. Prefer strict checking for new projects; do not require a configuration migration solely to match a default.
• Inspect optional-property and indexed-access behavior for unsupported undefined values; establish the affected contract before recommending stronger compiler flags such as exactOptionalPropertyTypes or noUncheckedIndexedAccess.
• Investigate @ts-ignore and its justification: identify the diagnostic being hidden and whether the invariant is established elsewhere. An explanation alone does not prove safety.
• @ts-expect-error is preferred over @ts-ignore — it fails if the error goes away

Type Safety