test262 intl402/NumberFormat — 62 (self-contained worklist)

[proggeramlug]

Self-contained worklist — 62 failing. Snapshot 2026-07-01 full sweep (perry 0.5.1209, node v26.3.0). Everything you need is in this issue; no history to read, no re-measure to start.

Intl.NumberFormat formatToParts, notation/compactDisplay/signDisplay, rounding modes, locale negotiation + arg-validation negatives. Crate: perry-stdlib (intl).

Setup (any box)

git clone https://github.com/PerryTS/perry && cd perry
cargo build --release -p perry -p perry-runtime-static -p perry-stdlib-static
git clone --depth 1 https://github.com/tc39/test262 vendor/test262   # checkout test-compat/test262/pinned-sha.txt
# node on PATH (differential oracle). See test-compat/test262/README.md.

Measure/verify: scripts/test262_subset.py --root vendor/test262 --dir intl402/NumberFormat --jobs 8 (the .failures.txt sidecar lists failures; diff before/after for zero-regression).

Failure reasons

n	reason
5	Uncaught exception: Expected SameValue(«"-987 kilometer
4	(no output)
4	Uncaught exception: Compact short: 987654321: length Ex
4	Uncaught exception: zero: length Expected SameValue(«4»
4	Uncaught exception: negativeNearZero: length Expected S
4	Uncaught exception: undefined: parts[3].value Expected
2	Uncaught exception: Formatted value for 1.23, en-US-u-n
2	Uncaught exception: Expected SameValue(«"988M"», «"9.9億
2	Uncaught exception: Expected SameValue(«"(987,00 $)"»,
2	Uncaught exception: Expected SameValue(«"$0.00"», «"+$0
2	Uncaught exception: Expected SameValue(«"US$0.00"», «"+
2	Uncaught exception: Expected SameValue(«"($0.00)"», «"$

All 62 failing cases (path — reason)

intl402/NumberFormat/constructor-locales-get-tostring.js    (no output)
intl402/NumberFormat/constructor-locales-hasproperty.js    (no output)
intl402/NumberFormat/constructor-option-read-order.js    (no output)
intl402/NumberFormat/currency-digits-nonstandard-notation.js    Uncaught exception: Didn't get correct maximumFractionDigits for JPY in engineer
intl402/NumberFormat/dft-currency-mnfd-range-check-mxfd.js    Uncaught exception: Expected SameValue(«2», «1») to be true
intl402/NumberFormat/ignore-invalid-unicode-ext-values.js    Uncaught exception: Locale ja-JP-u-cu-usd is affected by key cu; value USD. Expe
intl402/NumberFormat/intl-legacy-constructed-symbol-on-unwrap.js    (no output)
intl402/NumberFormat/intl-legacy-constructed-symbol-property.js    Uncaught exception: return value of Intl.NumberFormat constructor Expected SameV
intl402/NumberFormat/intl-legacy-constructed-symbol.js    Uncaught exception: Expected true but got false
intl402/NumberFormat/prototype/format/format-rounding-priority-less-precision.js    Uncaught exception: Formatted value for 1.23, en-US-u-nu-arab and options {"useG
intl402/NumberFormat/prototype/format/format-rounding-priority-more-precision.js    Uncaught exception: Formatted value for 1.23, en-US-u-nu-arab and options {"useG
intl402/NumberFormat/prototype/format/notation-compact-de-DE.js    Uncaught exception: Expected SameValue(«"988M"», «"988 Mio."») to be true
intl402/NumberFormat/prototype/format/notation-compact-ja-JP.js    Uncaught exception: Expected SameValue(«"988M"», «"9.9億"») to be true
intl402/NumberFormat/prototype/format/notation-compact-ko-KR.js    Uncaught exception: Expected SameValue(«"988M"», «"9.9억"») to be true
intl402/NumberFormat/prototype/format/notation-compact-zh-TW.js    Uncaught exception: Expected SameValue(«"988M"», «"9.9億"») to be true
intl402/NumberFormat/prototype/format/signDisplay-currency-de-DE.js    Uncaught exception: Expected SameValue(«"(987,00 $)"», «"-987,00 $"») to be true
intl402/NumberFormat/prototype/format/signDisplay-currency-en-US.js    Uncaught exception: Expected SameValue(«"$0.00"», «"+$0.00"») to be true
intl402/NumberFormat/prototype/format/signDisplay-currency-ja-JP.js    Uncaught exception: Expected SameValue(«"$0.00"», «"+$0.00"») to be true
intl402/NumberFormat/prototype/format/signDisplay-currency-ko-KR.js    Uncaught exception: Expected SameValue(«"US$0.00"», «"+US$0.00"») to be true
intl402/NumberFormat/prototype/format/signDisplay-currency-zh-TW.js    Uncaught exception: Expected SameValue(«"US$0.00"», «"+US$0.00"») to be true
intl402/NumberFormat/prototype/format/signDisplay-negative-currency-de-DE.js    Uncaught exception: Expected SameValue(«"(987,00 $)"», «"-987,00 $"») to be true
intl402/NumberFormat/prototype/format/signDisplay-negative-currency-en-US.js    Uncaught exception: Expected SameValue(«"($0.00)"», «"$0.00"») to be true
intl402/NumberFormat/prototype/format/signDisplay-negative-currency-ja-JP.js    Uncaught exception: Expected SameValue(«"($0.00)"», «"$0.00"») to be true
intl402/NumberFormat/prototype/format/signDisplay-negative-currency-ko-KR.js    Uncaught exception: Expected SameValue(«"(US$0.00)"», «"US$0.00"») to be true
intl402/NumberFormat/prototype/format/signDisplay-negative-currency-zh-TW.js    Uncaught exception: Expected SameValue(«"(US$0.00)"», «"US$0.00"») to be true
intl402/NumberFormat/prototype/format/unit-de-DE.js    Uncaught exception: Expected SameValue(«"-987 kilometer-per-hour"», «"-987 km/h"
intl402/NumberFormat/prototype/format/unit-en-US.js    Uncaught exception: Expected SameValue(«"-987 kilometer-per-hour"», «"-987 km/h"
intl402/NumberFormat/prototype/format/unit-ja-JP.js    Uncaught exception: Expected SameValue(«"-987 kilometer-per-hour"», «"-987 km/h"
intl402/NumberFormat/prototype/format/unit-ko-KR.js    Uncaught exception: Expected SameValue(«"-987 kilometer-per-hour"», «"-987km/h"»
intl402/NumberFormat/prototype/format/unit-zh-TW.js    Uncaught exception: Expected SameValue(«"-987 kilometer-per-hour"», «"-987 公里/小時
intl402/NumberFormat/prototype/format/units.js    Uncaught exception: Expected SameValue(«"123"», «"123"») to be false
intl402/NumberFormat/prototype/format/useGrouping-en-IN.js    Uncaught exception: (omitted) Expected SameValue(«"100,000"», «"1,00,000"») to b
intl402/NumberFormat/prototype/format/useGrouping-extended-de-DE.js    Uncaught exception: notation: "compact" Expected SameValue(«"1K"», «"1000"») to 
intl402/NumberFormat/prototype/format/useGrouping-extended-en-IN.js    Uncaught exception: "always" Expected SameValue(«"100,000"», «"1,00,000"») to be
intl402/NumberFormat/prototype/format/value-decimal-string.js    Uncaught exception: Expected SameValue(«"1"», «"1.0000000000000001"») to be true
intl402/NumberFormat/prototype/formatRange/en-US.js    Uncaught exception: Expected SameValue(«"$3.00–$5.00"», «"$3 – $5"») to be true
intl402/NumberFormat/prototype/formatRange/pt-PT.js    Uncaught exception: Expected SameValue(«"€3.00–€5.00"», «"3 - 5 €"») to be true
intl402/NumberFormat/prototype/formatRangeToParts/en-US.js    Uncaught exception: Expected SameValue(«9», «5») to be true
intl402/NumberFormat/prototype/formatToParts/notation-compact-de-DE.js    Uncaught exception: Compact short: 987654321: length Expected SameValue(«2», «3»
intl402/NumberFormat/prototype/formatToParts/notation-compact-ja-JP.js    Uncaught exception: Compact short: 987654321: length Expected SameValue(«2», «4»
intl402/NumberFormat/prototype/formatToParts/notation-compact-ko-KR.js    Uncaught exception: Compact short: 987654321: length Expected SameValue(«2», «4»
intl402/NumberFormat/prototype/formatToParts/notation-compact-zh-TW.js    Uncaught exception: Compact short: 987654321: length Expected SameValue(«2», «4»
intl402/NumberFormat/prototype/formatToParts/percent-en-US.js    Uncaught exception: unit: length Expected SameValue(«4», «3») to be true
intl402/NumberFormat/prototype/formatToParts/signDisplay-currency-de-DE.js    Uncaught exception: negative: length Expected SameValue(«7», «6») to be true
intl402/NumberFormat/prototype/formatToParts/signDisplay-currency-en-US.js    Uncaught exception: zero: length Expected SameValue(«4», «5») to be true
intl402/NumberFormat/prototype/formatToParts/signDisplay-currency-ja-JP.js    Uncaught exception: zero: length Expected SameValue(«4», «5») to be true
intl402/NumberFormat/prototype/formatToParts/signDisplay-currency-ko-KR.js    Uncaught exception: zero: length Expected SameValue(«4», «5») to be true
intl402/NumberFormat/prototype/formatToParts/signDisplay-currency-zh-TW.js    Uncaught exception: zero: length Expected SameValue(«4», «5») to be true
intl402/NumberFormat/prototype/formatToParts/signDisplay-negative-currency-de-DE.js    Uncaught exception: negative: length Expected SameValue(«7», «6») to be true
intl402/NumberFormat/prototype/formatToParts/signDisplay-negative-currency-en-US.js    Uncaught exception: negativeNearZero: length Expected SameValue(«6», «4») to be 
intl402/NumberFormat/prototype/formatToParts/signDisplay-negative-currency-ja-JP.js    Uncaught exception: negativeNearZero: length Expected SameValue(«6», «4») to be 
intl402/NumberFormat/prototype/formatToParts/signDisplay-negative-currency-ko-KR.js    Uncaught exception: negativeNearZero: length Expected SameValue(«6», «4») to be 
intl402/NumberFormat/prototype/formatToParts/signDisplay-negative-currency-zh-TW.js    Uncaught exception: negativeNearZero: length Expected SameValue(«6», «4») to be 
intl402/NumberFormat/prototype/formatToParts/unit-de-DE.js    Uncaught exception: undefined: parts[3].value Expected SameValue(«"kilometer-per
intl402/NumberFormat/prototype/formatToParts/unit-en-US.js    Uncaught exception: undefined: parts[3].value Expected SameValue(«"kilometer-per
intl402/NumberFormat/prototype/formatToParts/unit-ja-JP.js    Uncaught exception: undefined: parts[3].value Expected SameValue(«"kilometer-per
intl402/NumberFormat/prototype/formatToParts/unit-ko-KR.js    Uncaught exception: undefined: length Expected SameValue(«4», «3») to be true
intl402/NumberFormat/prototype/formatToParts/unit-zh-TW.js    Uncaught exception: undefined: parts[3].value Expected SameValue(«"kilometer-per
intl402/NumberFormat/prototype/resolvedOptions/resolved-numbering-system-unicode-extensions-and-options.js    Uncaught exception: Resolved numberingSystem for locale=en-u-nu-arab with number
intl402/NumberFormat/prototype/toStringTag/configurable.js    Uncaught exception: Expected SameValue(«"Intl.NumberFormat"», «"Alpha"») to be t
intl402/NumberFormat/subclassing.js    TypeError: undefined is not a function
intl402/NumberFormat/test-option-roundingPriority-mixed-options.js    Uncaught exception: Formatted value for 1.625, en-US-u-nu-arab and options {"max

Workflow

Pick a coherent single-root subcluster, localize (cargo run --release -- f.ts --trace hir --focus <fn> / --trace llvm), fix, verify listed cases pass AND re-run the slice for zero regressions. Code-only PR (no Cargo.toml/Cargo.lock version bump, no CLAUDE.md Current-Version, no CHANGELOG — maintainer folds metadata). cargo fmt --all -- --check + bash scripts/check_file_size.sh must pass (files < 2000 lines). Reference this issue. Never reference internal infrastructure hostnames.

[proggeramlug]

Residual (NumberFormat 62 → 29 after the 2026-07-03 sweep) tracked in the refreshed self-contained ticket #5904.