Test262 update

.github/workflows/test.yml

@@ -9,10 +9,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: use node.js v20.x
+      - name: use node.js v23.x
         uses: actions/setup-node@v3
         with:
-          node-version: 20.x
+          node-version: 23.x
       - run: npm ci
       - run: npm run test-demitasse
         env:
@@ -23,10 +23,10 @@ jobs:
       - uses: actions/checkout@v3
         with:
           submodules: true
-      - name: use node.js v20.x
+      - name: use node.js v23.x
         uses: actions/setup-node@v3
         with:
-          node-version: 20.x
+          node-version: 23.x
       - run: npm run codecov:test262
       - uses: codecov/codecov-action@v4
         with:
@@ -38,20 +38,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: use node.js v20.x
+      - name: use node.js v23.x
         uses: actions/setup-node@v3
         with:
-          node-version: 20.x
+          node-version: 23.x
       - run: npm ci
       - run: npm run test-cookbook
   test-validstrings:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: use node.js v20.x
+      - name: use node.js v23.x
         uses: actions/setup-node@v3
         with:
-          node-version: 20.x
+          node-version: 23.x
       - run: npm ci
       - run: |
           cd polyfill

polyfill/lib/intl.mjs

@@ -168,13 +168,13 @@ function createDateTimeFormat(dtf, locale, options) {
     SetSlot(dtf, TZ_ORIGINAL, ro.timeZone);
   } else {
     const id = ES.ToString(timeZoneOption);
-    if (ES.IsOffsetTimeZoneIdentifier(id)) {
-      // Note: https://github.com/tc39/ecma402/issues/683 will remove this
-      throw new RangeErrorCtor('Intl.DateTimeFormat does not currently support offset time zones');
+    if (id.startsWith('−')) {
+      // The initial (Node 23) implementation of offset time zones allowed use
+      // of the Unicode minus sign, which was disallowed by a later spec change.
+      throw new RangeError('Unicode minus (U+2212) is not supported in time zone offsets');
     }
-    const record = ES.GetAvailableNamedTimeZoneIdentifier(id);
-    if (!record) throw new RangeErrorCtor(`Intl.DateTimeFormat formats built-in time zones, not ${id}`);
-    SetSlot(dtf, TZ_ORIGINAL, record.identifier);
+    // store a normalized identifier
+    SetSlot(dtf, TZ_ORIGINAL, ES.ToTemporalTimeZoneIdentifier(id));
   }
 }
 

polyfill/package.json

@@ -7,9 +7,9 @@
   "browser": "dist/index.umd.js",
   "types": "index.d.ts",
   "scripts": {
-    "test": "node --loader ./test/resolve.source.mjs ./test/all.mjs",
+    "test": "node ./test/all.mjs",
     "test-cookbook": "npm run build && TEST=all npm run test-cookbook-one",
-    "test-cookbook-one": "node --loader ./test/resolve.cookbook.mjs ../docs/cookbook/$TEST.mjs",
+    "test-cookbook-one": "node --require=./script.js --eval='globalThis.assert = require(`node:assert`).strict' ../docs/cookbook/$TEST.mjs",
     "test262": "npm run build262 && node runtest262.mjs",
     "codecov:test262": "./ci_codecov_test262.sh",
     "build": "rollup -c rollup.config.js --bundleConfigAsCjs",

polyfill/test/datemath.mjs

@@ -14,7 +14,7 @@ const { reporter } = Pretty;
 import { strict as assert } from 'assert';
 const { equal } = assert;
 
-import * as Temporal from 'proposal-temporal';
+import * as Temporal from '../lib/temporal.mjs';
 
 describe('Date.since(simple, simple)', () => {
   build('Before Leap Day', '2020-01-03', '2020-02-15');

polyfill/test/ecmascript.mjs

@@ -10,7 +10,6 @@ const { deepEqual, equal, throws } = assert;
 import bigInt from 'big-integer';
 import { readFileSync } from 'fs';
 
-import 'proposal-temporal';
 import * as ES from '../lib/ecmascript.mjs';
 
 describe('ECMAScript', () => {

polyfill/test/expected-failures.txt

@@ -7,24 +7,14 @@ staging/Intl402/Temporal/old/time-toLocaleString.js
 intl402/DateTimeFormat/prototype/format/temporal-objects-resolved-time-zone.js
 intl402/DateTimeFormat/prototype/format/timedatestyle-en.js
 
-# These are caught by the default test glob, but are unrelated to Temporal.
-# They rely on Intl.DateTimeFormat supporting offset time zones.
-intl402/DateTimeFormat/prototype/format/offset-timezone-gmt-same.js
-intl402/DateTimeFormat/prototype/formatToParts/offset-timezone-correct.js
-intl402/DateTimeFormat/prototype/resolvedOptions/offset-timezone-basic.js
-intl402/DateTimeFormat/prototype/resolvedOptions/offset-timezone-change.js
-
 # Temporal test262 runner does not support $262.createRealm()
 intl402/DateTimeFormat/proto-from-ctor-realm.js
 
 # https://github.com/tc39/ecma402/issues/402
 intl402/DateTimeFormat/prototype/resolvedOptions/hourCycle-default.js
 
-# Fails until CLDR 46 (released 2024-10-24) makes its way into a Node.js release
-staging/Intl402/Temporal/old/non-iso-calendars.js
-
-# https://github.com/tc39/test262/pull/4336
-intl402/DateTimeFormat/canonicalize-utc-timezone.js
+# https://github.com/tc39/ecma402/issues/534
+staging/Intl402/Temporal/old/non-iso-calendars-ethiopic.js
 
 # Possibly faulty calculations for year 0 in Hebrew calendar in ICU4C
 # https://unicode-org.atlassian.net/browse/ICU-23007
@@ -37,6 +27,3 @@ staging/sm/Temporal/PlainDate/from-islamic-umalqura.js
 # Faulty leap month calculations in Chinese calendar in ICU4C
 # https://unicode-org.atlassian.net/browse/ICU-22230
 staging/sm/Temporal/PlainMonthDay/from-chinese-leap-month-uncommon.js
-
-# Fails until Intl.DurationFormat available in Node.js release
-intl402/Temporal/Duration/prototype/toLocaleString/returns-same-results-as-DurationFormat.js