Deno 2.5 Brings Support for Permission Sets and Test API Hooks

This content originally appeared on InfoQ - JavaScript and was authored by Daniel Curtis

Deno 2.5 has arrived, enhancing the secure JavaScript/TypeScript runtime with new permission sets, refined testing hooks, and performance boosts. Upgrading to V8 14.0 and TypeScript 5.9.2, it unlocks advanced features while evolving the Temporal API. Explore improved WebSocket headers, bundling capabilities, and more for seamless development.

This content originally appeared on InfoQ - JavaScript and was authored by Daniel Curtis

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Daniel Curtis | Sciencx (2025-10-21T12:00:00+00:00) Deno 2.5 Brings Support for Permission Sets and Test API Hooks. Retrieved from https://www.scien.cx/2025/10/21/deno-2-5-brings-support-for-permission-sets-and-test-api-hooks/

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" » Deno 2.5 Brings Support for Permission Sets and Test API Hooks." Daniel Curtis | Sciencx - Tuesday October 21, 2025, https://www.scien.cx/2025/10/21/deno-2-5-brings-support-for-permission-sets-and-test-api-hooks/

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Daniel Curtis | Sciencx Tuesday October 21, 2025 » Deno 2.5 Brings Support for Permission Sets and Test API Hooks., viewed ,<https://www.scien.cx/2025/10/21/deno-2-5-brings-support-for-permission-sets-and-test-api-hooks/>

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IEEE

" » Deno 2.5 Brings Support for Permission Sets and Test API Hooks." Daniel Curtis | Sciencx [Online]. Available: https://www.scien.cx/2025/10/21/deno-2-5-brings-support-for-permission-sets-and-test-api-hooks/. [Accessed: ]

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» Deno 2.5 Brings Support for Permission Sets and Test API Hooks | Daniel Curtis | Sciencx | https://www.scien.cx/2025/10/21/deno-2-5-brings-support-for-permission-sets-and-test-api-hooks/ |

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