Import Assertions — 2 Technical Articles

Dec 2, 2025 · Frontend Development

Simplify CORS in Modern Frontend: One-Line Fetch Solution & New Import Assertions

This article explains the fundamentals of CORS, reviews traditional workarounds, and shows how the Fetch API with mode:'cors' and import assertions can provide concise, secure cross‑origin requests while outlining upcoming web security policies.

CORSFetch APIImport Assertions

0 likes · 5 min read

Simplify CORS in Modern Frontend: One-Line Fetch Solution & New Import Assertions

Node Underground

Oct 12, 2020 · Fundamentals

TC39 Updates: Error Cause, Intl.DisplayNames, Import Assertions & More

The article reviews the latest TC39 meeting, detailing proposals that moved to higher stages—including Error Cause reaching Stage 4, Intl.DisplayNames enhancements, Import Assertions, .item() for indexables, class static blocks, resizable array buffers, Intl.Enumeration, double‑ended iterators, integer math extensions, standardized debug syntax, String.dedent, Intl.Locale, and DisplayNames v2—while outlining the criteria required for each stage transition.

ECMAScript proposalsError HandlingImport Assertions

0 likes · 19 min read

TC39 Updates: Error Cause, Intl.DisplayNames, Import Assertions & More