{
  "id": 5796937,
  "title": "TypeScript AI PR Reviewer: Catch Unsafe Types",
  "url": "https://urgent.news/2026/09/05/typescript-ai-pr-reviewer-catch-unsafe-types",
  "topic": "ai",
  "section": "AI",
  "published": "2026-09-05T16:13:01.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/gateofai/typescript-ai-pr-reviewer-catch-unsafe-types-4f21"
  },
  "original_language": "en",
  "account": "This tutorial guides you through building a TypeScript pull-request reviewer called type-guardian. The reviewer combines Git diffs, TypeScript Compiler API diagnostics, local AST rules, and OpenAI structured output to provide local and contextual AI feedback while keeping compiler failures separate.\n\nThe key aspects include:\n\n1. Defining strict compiler settings and shared types in tsconfig.json and src/types.ts, using TypeScript's strict options and specific finding categories such as explicit-any, unsafe-type-assertion, typescript-suppression, compiler-error, and ai-review.\n\n2. Reading Git diffs to identify changed TypeScript files and running deterministic checks using the TypeScript Compiler API to obtain compiler diagnostics from the repository configuration.\n\n3. Parsing the current working-tree source with the TypeScript parser and obtaining compiler diagnostics from the repository configuration.\n\n4. Providing configurable options for the reviewer like baseRef, maxDiffChars, maxFiles, and includeAiReview, as well as generating a ReviewReport containing generated timestamps, baseRef, changedFiles count, compilerDiagnostics count, aiReviewIncluded status, findings, and more.\n\nThe tutorial emphasizes the importance of keeping compiler failures separate from contextual AI feedback, and avoiding silent code changes or becoming the sole merge gate. The model can explain potentially unsafe boundaries or spot context outside syntax rules, but should not override the compiler or serve as the sole merge gate.",
  "summary": "🚀 Technical Briefing: This tutorial is part of our deep-dive series on Agentic Workflows at Gate of AI . For the full technical breakdown, interactive code sandbox, and the native Arabic translation, visit the original article here . Build a TypeScript pull-request reviewer that combines Git diffs, TypeScript Compiler API diagnostics, local AST rules, and OpenAI structured output. The result is…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}