TypeScript Getter Setter Errors: TS1056, TS1028, TS2378 Fix

📰 Dev.to · Mahdi BEN RHOUMA

Fix TypeScript getter setter errors TS1056, TS1028, and TS2378 by updating your tsconfig.json file to target ES5 or higher

intermediate Published 27 Jun 2026
Action Steps
  1. Open your tsconfig.json file
  2. Update the 'target' property to 'ES5' or a higher version
  3. Save the changes to tsconfig.json
  4. Recompile your TypeScript code to verify the errors are resolved
  5. Consider updating to a newer version of TypeScript or adjusting other config settings for optimal performance
Who Needs to Know This

Developers working with TypeScript will benefit from this solution to resolve common errors related to getter and setter accessors

Key Insight

💡 TypeScript getter and setter accessors require a target of ES5 or higher to compile correctly

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💡 Fix TS1056, TS1028, and TS2378 errors in #TypeScript by setting 'target': 'ES5' in tsconfig.json

Key Takeaways

Fix TypeScript getter setter errors TS1056, TS1028, and TS2378 by updating your tsconfig.json file to target ES5 or higher

Full Article

Seeing TS1056, TS1028, or TS2378? Set "target": "ES5" in tsconfig.json ? TypeScript accessors require ES5+ to compile to Object.defineProperty. Exact fixes for each error variant.
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