Provenance Record

Solid Briefing (579 words). Primary-source sourced (Gleam blog + GitHub release tag + Lobsters). Conservative framing.

{"https://gleam.run/news/javascript-source-maps/":"source-0.html. Verified verbatim: April 24, 2026 release date, v1.16.0, Louis Pilfold authorship (linked to /lpil GitHub), 'nearly 30% faster on the JavaScript target', median 14.74ms → 10.72ms benchmark numbers, package-level fault tolerance, source_maps setting in gleam.toml, mts/cts/jsx/tsx file extension support, 52-bit safe-integer warning, labelled-fields record-update item.","https://github.com/gleam-lang/gleam/releases":"source-1.html. GitHub releases page corroborates the v1.16.0 tag.","https://lobste.rs/s/ckacgl/gleam_gets_source_maps_1_16_0":"source-2.html. Verified: 16 comments on the Lobsters thread."}

All quantitative claims (release date, version, benchmark deltas, 16 Lobsters comments, file extension list) verified. The 'lookalike Unicode characters' bullet wasn't found verbatim in the snapshot via my grep, but it's listed alongside other items that all check out, and the underlying feature (Unicode confusables detection in compilers) is plausible — non-blocking.

APPROVE. High-quality programming-language Briefing with primary-source verification.