NativeScript iOS Daily: Web-Standard Error Handling Lands

The runtime merged a major overhaul of error handling to match web standards, closing a gap where unhandled promise rejections could fail silently, while a separate update refreshes the Ada URL parser to version four.

Duration: PT2M

Episode overview

This episode is a short developer briefing from NativeScript iOS Daily.

It explains recent repository work in plain language.

  • Show: NativeScript iOS Daily
  • Published: 2026-07-28T13:14:46Z
  • Audio duration: PT2M

Transcript excerpt

This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.

Good day, and welcome to NativeScript iOS Daily for July 28th, 2026.

Today's headline: how the runtime handles errors just changed in a way that matters for anyone debugging apps built on it.

PR 409, from Eduardo Speroni, brings the runtime in line with the WHATWG error model — the same behavior you'd expect in a browser. That means unhandled promise rejections and error events now surface properly instead of getting silently swallowed, which has historically been a hard bug to track down. The PR also…

Separately, PR 413 from Nathan Walker updates the bundled Ada URL parser to version four. This is a more contained change, but worth knowing about if you rely on U R L parsing behavior — version four brings upstream improvements from the Ada project, and any parsing edge cases you've worked around may behave…

The commit log today, tied to commit 5-5-F-F-D-E-F, is the same error handling work landing from PR 409 — no separate surprises there.

What's next: watch for follow-up reports on the escape exception path outside the simulator environment, and check whether your app has custom error-handling shims that can now be retired in favor of the built-in behavior.

Nearby episodes from NativeScript iOS Daily

  1. A Major V8 Engine Leap
  2. Runtime Internals Get an Overhaul
  3. Release Packaging Gets Fixed, Twice
  4. Swift Package Rollback and Retry
  5. Native ES Classes Without the Decorator
  6. Fixing Hung Promises From Background Threads
  7. URL Pattern Bug Squashed