← back to v143 · icu-version-77-supporting-unicode-16

conformance · v143

v143 · icu-version-77-supporting-unicode-16 — conformance probe

6 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://tc39.es/ecma402 chromestatus: #5143313833000960 generated 2026-06-01T10:50:00Z by conformance-author-v1-subagent
0
pass
0
fail
0
blocked
6
total
id contract kind verdict detail
intl-segmenter-exists Intl.Segmenter is available — text segmentation uses the updated Unicode 16 data. spec ↗ typeof
unicode-16-codepoint-grapheme Intl.Segmenter treats a Unicode 16 emoji sequence as a single grapheme cluster. spec ↗ script
intl-locale-getCalendars ICU 77 ships the locale-info getCalendars surface alongside the deprecated getter pair. spec ↗ typeof
italian-number-format-default ICU 77 changes Italian default number formatting — large numbers use grouping (verify by spec-compliant pattern). spec ↗ script
intl-displaynames-handles-new-script Intl.DisplayNames returns a string for a script tag introduced in recent Unicode (e.g. 'Latn'). spec ↗ script
intl-listformat-exists Intl.ListFormat is present — list patterns use the ICU 77 CLDR data. spec ↗ typeof