Fix Failed Tests summary missing assertion failures

[frostney]

Summary

• Fix FailedTestDetails list (shown in Failed Tests: summary line and JSON output) to include plain assertion failures
• Previously only exception-based failures and promise rejections were captured — expect(1).toBe(2) failures set the test's failure flag but were never added to the summary
• Use a FailureRecorded flag to avoid duplicating entries already added by exception/promise handlers

Before: Failed Tests: line was empty even when tests failed via assertions
After: Failed Tests: Test "this should fail",Test "addition" in suite "math"

Test plan

• Interpreter: 3501 passed, 0 failed, 41 skipped
• Bytecode: 3501 passed, 0 failed, 0 skipped
• Verified assertion failures now appear in Failed Tests: summary
• Verified exception/promise failures still appear (no duplicates)

🤖 Generated with Claude Code

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between f2e66e5 and ee6fedc.

📒 Files selected for processing (1)

• units/Goccia.Builtins.TestAssertions.pas

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/testrunner-silent-failures

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[github-actions]

Benchmark Results

254 benchmarks

Interpreted: 🟢 2 improved · 252 unchanged · avg +0.2%
Bytecode: 🟢 25 improved · 🔴 1 regressed · 228 unchanged · avg +3.1%

arraybuffer.js — Interp: 14 unch. · avg -1.3% · Bytecode: 14 unch. · avg +2.6%

Benchmark	Interpreted	Δ	Bytecode	Δ
create ArrayBuffer(0)	453,800 → 446,111	-1.7%	163,367 → 165,935	+1.6%
create ArrayBuffer(64)	445,029 → 432,729	-2.8%	160,504 → 165,436	+3.1%
create ArrayBuffer(1024)	339,293 → 330,906	-2.5%	141,282 → 146,264	+3.5%
create ArrayBuffer(8192)	143,296 → 143,227	-0.0%	82,386 → 86,455	+4.9%
slice full buffer (64 bytes)	524,596 → 516,264	-1.6%	406,110 → 413,271	+1.8%
slice half buffer (512 of 1024 bytes)	443,269 → 441,961	-0.3%	351,750 → 360,793	+2.6%
slice with negative indices	450,637 → 435,272	-3.4%	380,892 → 388,573	+2.0%
slice empty range	510,465 → 499,852	-2.1%	392,618 → 404,970	+3.1%
byteLength access	1,551,580 → 1,609,135	+3.7%	1,215,168 → 1,251,077	+3.0%
Symbol.toStringTag access	1,153,012 → 1,173,927	+1.8%	692,855 → 692,871	+0.0%
ArrayBuffer.isView	780,718 → 774,205	-0.8%	574,323 → 594,831	+3.6%
clone ArrayBuffer(64)	440,657 → 423,816	-3.8%	397,994 → 400,569	+0.6%
clone ArrayBuffer(1024)	332,821 → 322,324	-3.2%	279,660 → 293,329	+4.9%
clone ArrayBuffer inside object	272,734 → 267,131	-2.1%	195,667 → 197,781	+1.1%

arrays.js — Interp: 19 unch. · avg +0.0% · Bytecode: 19 unch. · avg +0.9%

Benchmark	Interpreted	Δ	Bytecode	Δ
Array.from length 100	13,630 → 13,690	+0.4%	14,992 → 14,522	-3.1%
Array.from 10 elements	236,331 → 235,931	-0.2%	176,488 → 186,951	+5.9%
Array.of 10 elements	323,848 → 321,657	-0.7%	245,426 → 257,387	+4.9%
spread into new array	336,389 → 331,481	-1.5%	876,417 → 864,034	-1.4%
map over 50 elements	27,674 → 27,704	+0.1%	25,272 → 25,337	+0.3%
filter over 50 elements	23,364 → 23,761	+1.7%	23,978 → 24,206	+1.0%
reduce sum 50 elements	26,928 → 27,105	+0.7%	21,961 → 21,356	-2.8%
forEach over 50 elements	23,409 → 23,200	-0.9%	28,342 → 27,273	-3.8%
find in 50 elements	35,464 → 35,218	-0.7%	31,465 → 31,825	+1.1%
sort 20 elements	11,899 → 12,348	+3.8%	12,758 → 12,730	-0.2%
flat nested array	115,877 → 116,845	+0.8%	478,628 → 482,629	+0.8%
flatMap	72,944 → 71,823	-1.5%	326,775 → 317,535	-2.8%
map inside map (5x5)	21,745 → 21,697	-0.2%	106,647 → 104,975	-1.6%
filter inside map (5x10)	15,975 → 16,123	+0.9%	14,560 → 15,380	+5.6%
reduce inside map (5x10)	19,694 → 19,744	+0.3%	15,204 → 15,616	+2.7%
forEach inside forEach (5x10)	17,177 → 17,128	-0.3%	17,195 → 17,721	+3.1%
find inside some (10x10)	14,117 → 14,026	-0.6%	12,007 → 12,315	+2.6%
map+filter chain nested (5x20)	5,442 → 5,483	+0.8%	4,890 → 5,081	+3.9%
reduce flatten (10x5)	39,148 → 38,172	-2.5%	6,696 → 6,770	+1.1%

async-await.js — Interp: 6 unch. · avg -0.5% · Bytecode: 6 unch. · avg +1.0%

Benchmark	Interpreted	Δ	Bytecode	Δ
single await	377,873 → 376,436	-0.4%	300,449 → 306,663	+2.1%
multiple awaits	169,229 → 168,360	-0.5%	131,841 → 130,374	-1.1%
await non-Promise value	853,572 → 857,384	+0.4%	1,032,512 → 1,038,124	+0.5%
await with try/catch	369,242 → 363,901	-1.4%	298,465 → 298,673	+0.1%
await Promise.all	50,759 → 50,160	-1.2%	46,181 → 47,098	+2.0%
nested async function call	189,633 → 189,624	-0.0%	224,605 → 229,576	+2.2%

classes.js — Interp: 31 unch. · avg +0.6% · Bytecode: 🟢 1, 30 unch. · avg +3.4%

Benchmark	Interpreted	Δ	Bytecode	Δ
simple class new	135,637 → 136,277	+0.5%	388,623 → 404,844	+4.2%
class with defaults	105,938 → 108,002	+1.9%	279,125 → 288,767	+3.5%
50 instances via Array.from	5,507 → 5,503	-0.1%	7,334 → 7,439	+1.4%
instance method call	66,703 → 66,521	-0.3%	179,523 → 183,876	+2.4%
static method call	110,714 → 110,583	-0.1%	402,940 → 402,296	-0.2%
single-level inheritance	53,895 → 53,938	+0.1%	168,265 → 171,205	+1.7%
two-level inheritance	45,996 → 46,789	+1.7%	136,993 → 141,256	+3.1%
private field access	70,717 → 70,734	+0.0%	188,691 → 192,887	+2.2%
private methods	77,680 → 76,867	-1.0%	239,141 → 248,534	+3.9%
getter/setter access	74,917 → 75,041	+0.2%	181,705 → 189,251	+4.2%
class decorator (identity)	91,545 → 91,197	-0.4%	59,588 → 64,166	🟢 +7.7%
class decorator (wrapping)	53,302 → 53,795	+0.9%	42,769 → 45,054	+5.3%
identity method decorator	63,682 → 63,714	+0.1%	46,940 → 46,002	-2.0%
wrapping method decorator	51,294 → 51,803	+1.0%	42,580 → 45,139	+6.0%
stacked method decorators (x3)	34,579 → 34,638	+0.2%	29,062 → 30,517	+5.0%
identity field decorator	69,833 → 70,320	+0.7%	48,930 → 51,883	+6.0%
field initializer decorator	59,025 → 59,058	+0.1%	44,458 → 46,421	+4.4%
getter decorator (identity)	64,226 → 64,565	+0.5%	44,395 → 46,706	+5.2%
setter decorator (identity)	54,204 → 54,610	+0.7%	38,730 → 40,575	+4.8%
static method decorator	69,253 → 69,932	+1.0%	70,707 → 73,276	+3.6%
static field decorator	80,575 → 80,478	-0.1%	72,683 → 76,346	+5.0%
private method decorator	52,727 → 52,830	+0.2%	41,189 → 42,701	+3.7%
private field decorator	58,098 → 58,750	+1.1%	41,991 → 43,751	+4.2%
plain auto-accessor (no decorator)	100,741 → 103,237	+2.5%	59,616 → 62,160	+4.3%
auto-accessor with decorator	53,677 → 53,904	+0.4%	39,575 → 41,440	+4.7%
decorator writing metadata	44,071 → 44,041	-0.1%	44,404 → 46,647	+5.1%
static getter read	126,442 → 129,130	+2.1%	418,230 → 426,280	+1.9%
static getter/setter pair	100,312 → 100,374	+0.1%	228,186 → 228,983	+0.3%
inherited static getter	76,577 → 78,015	+1.9%	288,541 → 292,902	+1.5%
inherited static setter	82,714 → 82,978	+0.3%	223,314 → 226,493	+1.4%
inherited static getter with this binding	70,718 → 71,610	+1.3%	173,857 → 177,306	+2.0%

closures.js — Interp: 11 unch. · avg -0.9% · Bytecode: 11 unch. · avg +2.2%

Benchmark	Interpreted	Δ	Bytecode	Δ
closure over single variable	132,937 → 130,369	-1.9%	773,567 → 786,421	+1.7%
closure over multiple variables	121,568 → 119,657	-1.6%	469,528 → 486,360	+3.6%
nested closures	127,269 → 125,891	-1.1%	671,294 → 666,731	-0.7%
function as argument	95,861 → 93,943	-2.0%	687,656 → 712,970	+3.7%
function returning function	118,615 → 118,505	-0.1%	761,131 → 758,894	-0.3%
compose two functions	71,190 → 70,572	-0.9%	466,594 → 466,863	+0.1%
fn.call	143,880 → 147,821	+2.7%	142,289 → 150,768	+6.0%
fn.apply	112,457 → 112,516	+0.1%	97,231 → 99,952	+2.8%
fn.bind	135,603 → 134,155	-1.1%	143,540 → 148,615	+3.5%
recursive sum to 50	11,507 → 11,258	-2.2%	52,396 → 52,781	+0.7%
recursive tree traversal	19,630 → 19,179	-2.3%	75,719 → 78,072	+3.1%

collections.js — Interp: 12 unch. · avg -0.6% · Bytecode: 12 unch. · avg +2.0%

Benchmark	Interpreted	Δ	Bytecode	Δ
add 50 elements	7,099 → 7,106	+0.1%	5,959 → 6,080	+2.0%
has lookup (50 elements)	89,141 → 88,815	-0.4%	90,342 → 89,931	-0.5%
delete elements	47,944 → 48,325	+0.8%	38,208 → 38,884	+1.8%
forEach iteration	15,618 → 15,271	-2.2%	17,608 → 18,067	+2.6%
spread to array	27,530 → 27,928	+1.4%	153,332 → 155,863	+1.7%
deduplicate array	39,171 → 39,282	+0.3%	50,173 → 51,815	+3.3%
set 50 entries	5,186 → 5,075	-2.1%	6,180 → 6,212	+0.5%
get lookup (50 entries)	86,124 → 85,430	-0.8%	97,365 → 97,893	+0.5%
has check	127,510 → 127,134	-0.3%	154,443 → 157,280	+1.8%
delete entries	45,181 → 44,867	-0.7%	36,197 → 36,799	+1.7%
forEach iteration	15,890 → 15,325	-3.6%	17,363 → 17,995	+3.6%
keys/values/entries	7,606 → 7,644	+0.5%	21,778 → 22,773	+4.6%

destructuring.js — Interp: 22 unch. · avg +0.8% · Bytecode: 🟢 1, 21 unch. · avg +2.7%

Benchmark	Interpreted	Δ	Bytecode	Δ
simple array destructuring	402,677 → 399,692	-0.7%	1,012,878 → 1,047,202	+3.4%
with rest element	270,384 → 278,909	+3.2%	741,992 → 746,565	+0.6%
with defaults	411,945 → 432,429	+5.0%	945,945 → 1,004,049	+6.1%
skip elements	421,640 → 422,851	+0.3%	1,180,572 → 1,141,000	-3.4%
nested array destructuring	172,354 → 173,486	+0.7%	490,668 → 531,646	🟢 +8.4%
swap variables	511,179 → 505,153	-1.2%	1,285,518 → 1,349,397	+5.0%
simple object destructuring	309,885 → 307,783	-0.7%	628,387 → 632,360	+0.6%
with defaults	349,913 → 359,694	+2.8%	333,424 → 349,862	+4.9%
with renaming	309,033 → 322,159	+4.2%	733,990 → 740,360	+0.9%
nested object destructuring	142,463 → 143,496	+0.7%	283,721 → 293,615	+3.5%
rest properties	187,034 → 185,193	-1.0%	228,690 → 236,913	+3.6%
object parameter	92,570 → 92,582	+0.0%	203,798 → 211,117	+3.6%
array parameter	124,431 → 122,463	-1.6%	415,332 → 424,411	+2.2%
mixed destructuring in map	35,129 → 35,334	+0.6%	37,818 → 38,755	+2.5%
forEach with array destructuring	65,438 → 65,980	+0.8%	199,116 → 204,819	+2.9%
map with array destructuring	66,188 → 67,097	+1.4%	246,211 → 258,054	+4.8%
filter with array destructuring	69,376 → 69,494	+0.2%	290,644 → 300,758	+3.5%
reduce with array destructuring	74,206 → 75,421	+1.6%	274,502 → 278,941	+1.6%
map with object destructuring	79,119 → 80,523	+1.8%	79,323 → 81,259	+2.4%
map with nested destructuring	64,826 → 65,512	+1.1%	66,917 → 68,505	+2.4%
map with rest in destructuring	38,352 → 37,586	-2.0%	24,116 → 23,832	-1.2%
map with defaults in destructuring	59,097 → 59,182	+0.1%	40,275 → 41,049	+1.9%

fibonacci.js — Interp: 8 unch. · avg -2.4% · Bytecode: 8 unch. · avg +1.8%

Benchmark	Interpreted	Δ	Bytecode	Δ
recursive fib(15)	314 → 304	-3.3%	1,448 → 1,424	-1.7%
recursive fib(20)	29 → 27	-4.1%	131 → 133	+1.6%
recursive fib(15) typed	320 → 308	-3.7%	1,937 → 1,977	+2.0%
recursive fib(20) typed	29 → 27	-4.0%	178 → 177	-0.3%
iterative fib(20) via reduce	12,227 → 12,244	+0.1%	9,338 → 9,795	+4.9%
iterator fib(20)	9,338 → 9,439	+1.1%	16,603 → 16,812	+1.3%
iterator fib(20) via Iterator.from + take	15,074 → 14,744	-2.2%	17,710 → 18,490	+4.4%
iterator fib(20) last value via reduce	11,590 → 11,206	-3.3%	13,541 → 13,866	+2.4%

for-of.js — Interp: 7 unch. · avg +0.5% · Bytecode: 🟢 1, 6 unch. · avg +3.4%

Benchmark	Interpreted	Δ	Bytecode	Δ
for...of with 10-element array	44,312 → 44,727	+0.9%	160,104 → 167,704	+4.7%
for...of with 100-element array	5,069 → 5,110	+0.8%	24,555 → 24,706	+0.6%
for...of with string (10 chars)	32,712 → 33,303	+1.8%	127,963 → 132,295	+3.4%
for...of with Set (10 elements)	44,750 → 44,807	+0.1%	167,588 → 174,850	+4.3%
for...of with Map entries (10 entries)	28,964 → 28,754	-0.7%	45,285 → 49,340	🟢 +9.0%
for...of with destructuring	38,134 → 38,299	+0.4%	76,465 → 80,279	+5.0%
for-await-of with sync array	43,018 → 43,130	+0.3%	144,615 → 139,909	-3.3%

iterators.js — Interp: 20 unch. · avg -0.9% · Bytecode: 🟢 1, 19 unch. · avg +1.3%

Benchmark	Interpreted	Δ	Bytecode	Δ
Iterator.from({next}).toArray() — 20 elements	15,249 → 15,101	-1.0%	19,052 → 18,837	-1.1%
Iterator.from({next}).toArray() — 50 elements	6,710 → 6,617	-1.4%	8,119 → 8,270	+1.9%
spread pre-wrapped iterator — 20 elements	11,230 → 11,331	+0.9%	16,935 → 18,062	+6.7%
Iterator.from({next}).forEach — 50 elements	4,706 → 4,586	-2.6%	5,766 → 5,924	+2.7%
Iterator.from({next}).reduce — 50 elements	4,764 → 4,612	-3.2%	5,413 → 5,533	+2.2%
wrap array iterator	171,900 → 175,729	+2.2%	109,901 → 118,538	🟢 +7.9%
wrap plain {next()} object	10,731 → 10,651	-0.7%	13,752 → 13,199	-4.0%
map + toArray (50 elements)	4,837 → 4,694	-3.0%	5,966 → 6,119	+2.6%
filter + toArray (50 elements)	4,666 → 4,546	-2.6%	5,774 → 6,013	+4.1%
take(10) + toArray (50 element source)	27,890 → 27,502	-1.4%	31,539 → 31,067	-1.5%
drop(40) + toArray (50 element source)	6,716 → 6,710	-0.1%	9,080 → 8,721	-4.0%
chained map + filter + take (100 element source)	8,664 → 8,364	-3.5%	10,519 → 10,219	-2.8%
some + every (50 elements)	2,757 → 2,651	-3.8%	3,837 → 3,694	-3.7%
find (50 elements)	5,962 → 5,935	-0.5%	7,781 → 7,978	+2.5%
array.values().map().filter().toArray()	8,923 → 8,844	-0.9%	10,478 → 10,552	+0.7%
array.values().take(5).toArray()	210,795 → 211,578	+0.4%	151,020 → 153,446	+1.6%
array.values().drop(45).toArray()	197,462 → 202,105	+2.4%	141,531 → 146,685	+3.6%
map.entries() chained helpers	10,729 → 10,573	-1.5%	5,679 → 5,723	+0.8%
set.values() chained helpers	18,765 → 18,420	-1.8%	22,007 → 22,722	+3.3%
string iterator map + toArray	13,250 → 13,731	+3.6%	22,586 → 22,984	+1.8%

json.js — Interp: 20 unch. · avg +0.3% · Bytecode: 🟢 3, 🔴 1, 16 unch. · avg +4.6%

Benchmark	Interpreted	Δ	Bytecode	Δ
parse simple object	167,193 → 166,831	-0.2%	143,673 → 147,952	+3.0%
parse nested object	100,536 → 100,419	-0.1%	93,511 → 97,353	+4.1%
parse array of objects	53,478 → 54,222	+1.4%	50,230 → 51,192	+1.9%
parse large flat object	48,179 → 48,875	+1.4%	42,856 → 45,698	+6.6%
parse mixed types	69,432 → 69,614	+0.3%	59,652 → 62,279	+4.4%
stringify simple object	198,405 → 196,148	-1.1%	159,327 → 170,992	🟢 +7.3%
stringify nested object	104,818 → 109,194	+4.2%	86,785 → 91,279	+5.2%
stringify array of objects	59,636 → 62,577	+4.9%	50,835 → 54,154	+6.5%
stringify mixed types	86,992 → 88,380	+1.6%	72,470 → 77,477	+6.9%
reviver doubles numbers	43,918 → 42,918	-2.3%	42,137 → 44,009	+4.4%
reviver filters properties	37,363 → 37,326	-0.1%	48,494 → 50,670	+4.5%
reviver on nested object	49,905 → 48,811	-2.2%	54,099 → 50,298	🔴 -7.0%
reviver on array	28,957 → 28,618	-1.2%	30,490 → 31,044	+1.8%
replacer function doubles numbers	47,827 → 47,140	-1.4%	45,697 → 52,565	🟢 +15.0%
replacer function excludes properties	60,303 → 59,629	-1.1%	61,433 → 64,457	+4.9%
array replacer (allowlist)	114,230 → 115,773	+1.4%	93,832 → 97,734	+4.2%
stringify with 2-space indent	96,566 → 97,104	+0.6%	80,517 → 84,010	+4.3%
stringify with tab indent	96,230 → 95,737	-0.5%	80,632 → 84,595	+4.9%
parse then stringify	52,543 → 52,326	-0.4%	48,386 → 52,224	🟢 +7.9%
stringify then parse	31,097 → 31,395	+1.0%	31,069 → 31,669	+1.9%

jsx.jsx — Interp: 21 unch. · avg -1.1% · Bytecode: 🟢 4, 17 unch. · avg +4.5%

Benchmark	Interpreted	Δ	Bytecode	Δ
simple element	206,169 → 208,533	+1.1%	748,773 → 772,346	+3.1%
self-closing element	216,026 → 210,572	-2.5%	785,419 → 790,473	+0.6%
element with string attribute	176,470 → 170,606	-3.3%	557,036 → 553,718	-0.6%
element with multiple attributes	153,916 → 153,135	-0.5%	462,065 → 478,796	+3.6%
element with expression attribute	165,049 → 161,389	-2.2%	545,359 → 541,832	-0.6%
text child	209,262 → 205,207	-1.9%	730,388 → 780,258	+6.8%
expression child	204,757 → 207,080	+1.1%	749,336 → 780,519	+4.2%
mixed text and expression	193,949 → 189,702	-2.2%	676,955 → 719,063	+6.2%
nested elements (3 levels)	77,505 → 76,224	-1.7%	293,206 → 301,151	+2.7%
sibling children	58,011 → 57,214	-1.4%	217,101 → 223,968	+3.2%
component element	147,324 → 145,559	-1.2%	505,597 → 519,488	+2.7%
component with children	91,327 → 88,594	-3.0%	322,339 → 325,750	+1.1%
dotted component	123,587 → 124,549	+0.8%	383,572 → 401,902	+4.8%
empty fragment	223,074 → 211,650	-5.1%	772,687 → 804,374	+4.1%
fragment with children	58,085 → 57,229	-1.5%	205,496 → 232,032	🟢 +12.9%
spread attributes	107,629 → 107,605	-0.0%	122,006 → 132,125	🟢 +8.3%
spread with overrides	92,768 → 94,045	+1.4%	92,616 → 103,173	🟢 +11.4%
shorthand props	159,631 → 159,411	-0.1%	491,765 → 508,364	+3.4%
nav bar structure	26,959 → 27,083	+0.5%	88,186 → 95,401	🟢 +8.2%
card component tree	31,459 → 31,545	+0.3%	100,554 → 106,432	+5.8%
10 list items via Array.from	14,805 → 14,435	-2.5%	24,426 → 25,029	+2.5%

numbers.js — Interp: 11 unch. · avg -1.6% · Bytecode: 11 unch. · avg +2.1%

Benchmark	Interpreted	Δ	Bytecode	Δ
integer arithmetic	532,878 → 525,420	-1.4%	2,040,491 → 2,037,558	-0.1%
floating point arithmetic	537,865 → 563,356	+4.7%	2,298,467 → 2,298,590	+0.0%
number coercion	180,752 → 172,763	-4.4%	161,902 → 170,043	+5.0%
toFixed	102,861 → 99,919	-2.9%	228,390 → 227,368	-0.4%
toString	158,335 → 154,437	-2.5%	877,986 → 866,300	-1.3%
valueOf	228,666 → 216,111	-5.5%	1,335,013 → 1,316,366	-1.4%
toPrecision	145,654 → 140,062	-3.8%	453,767 → 459,075	+1.2%
Number.isNaN	307,168 → 308,087	+0.3%	212,386 → 219,592	+3.4%
Number.isFinite	307,491 → 302,401	-1.7%	217,908 → 231,589	+6.3%
Number.isInteger	304,218 → 303,934	-0.1%	227,483 → 239,290	+5.2%
Number.parseInt and parseFloat	250,094 → 248,624	-0.6%	171,219 → 180,380	+5.4%

objects.js — Interp: 7 unch. · avg -1.2% · Bytecode: 🟢 1, 6 unch. · avg +3.5%

Benchmark	Interpreted	Δ	Bytecode	Δ
create simple object	499,054 → 468,080	-6.2%	954,198 → 985,306	+3.3%
create nested object	220,417 → 221,975	+0.7%	416,636 → 424,707	+1.9%
create 50 objects via Array.from	9,486 → 9,272	-2.3%	8,770 → 8,653	-1.3%
property read	588,402 → 597,379	+1.5%	806,152 → 831,483	+3.1%
Object.keys	284,472 → 279,875	-1.6%	190,146 → 203,121	+6.8%
Object.entries	101,298 → 101,641	+0.3%	62,738 → 63,495	+1.2%
spread operator	180,936 → 179,252	-0.9%	178,251 → 194,942	🟢 +9.4%

promises.js — Interp: 12 unch. · avg -0.1% · Bytecode: 🟢 7, 5 unch. · avg +8.2%

Benchmark	Interpreted	Δ	Bytecode	Δ
Promise.resolve(value)	557,606 → 554,403	-0.6%	368,401 → 361,714	-1.8%
new Promise(resolve => resolve(value))	194,498 → 190,639	-2.0%	144,366 → 161,674	🟢 +12.0%
Promise.reject(reason)	552,745 → 552,029	-0.1%	352,715 → 373,000	+5.8%
resolve + then (1 handler)	176,070 → 174,398	-0.9%	149,743 → 159,968	+6.8%
resolve + then chain (3 deep)	69,040 → 67,995	-1.5%	60,985 → 68,216	🟢 +11.9%
resolve + then chain (10 deep)	21,842 → 22,326	+2.2%	20,638 → 23,205	🟢 +12.4%
reject + catch + then	99,970 → 100,907	+0.9%	93,820 → 98,587	+5.1%
resolve + finally + then	84,900 → 84,435	-0.5%	78,869 → 81,759	+3.7%
Promise.all (5 resolved)	31,450 → 32,034	+1.9%	26,098 → 28,197	🟢 +8.0%
Promise.race (5 resolved)	33,395 → 33,387	-0.0%	27,924 → 30,733	🟢 +10.1%
Promise.allSettled (5 mixed)	26,097 → 26,202	+0.4%	21,519 → 24,216	🟢 +12.5%
Promise.any (5 mixed)	31,338 → 31,152	-0.6%	26,417 → 29,616	🟢 +12.1%

strings.js — Interp: 11 unch. · avg -0.3% · Bytecode: 🟢 5, 6 unch. · avg +6.3%

Benchmark	Interpreted	Δ	Bytecode	Δ
string concatenation	394,723 → 405,414	+2.7%	372,479 → 426,153	🟢 +14.4%
template literal	679,277 → 648,702	-4.5%	684,030 → 787,306	🟢 +15.1%
string repeat	399,807 → 401,100	+0.3%	1,110,930 → 1,120,892	+0.9%
split and join	133,513 → 133,633	+0.1%	320,964 → 335,706	+4.6%
indexOf and includes	161,653 → 163,527	+1.2%	766,481 → 766,758	+0.0%
toUpperCase and toLowerCase	248,888 → 252,354	+1.4%	715,118 → 786,793	🟢 +10.0%
slice and substring	156,012 → 156,306	+0.2%	892,919 → 882,100	-1.2%
trim operations	183,917 → 191,828	+4.3%	645,388 → 738,249	🟢 +14.4%
replace and replaceAll	203,890 → 203,914	+0.0%	597,582 → 667,808	🟢 +11.8%
startsWith and endsWith	129,141 → 124,841	-3.3%	670,440 → 641,055	-4.4%
padStart and padEnd	193,028 → 182,523	-5.4%	672,578 → 694,467	+3.3%

typed-arrays.js — Interp: 🟢 2, 20 unch. · avg +5.7% · Bytecode: 🟢 1, 21 unch. · avg +2.1%

Benchmark	Interpreted	Δ	Bytecode	Δ
new Int32Array(0)	328,095 → 317,945	-3.1%	138,110 → 140,218	+1.5%
new Int32Array(100)	302,493 → 299,171	-1.1%	134,723 → 135,297	+0.4%
new Int32Array(1000)	172,088 → 171,161	-0.5%	76,800 → 81,268	+5.8%
new Float64Array(100)	271,040 → 270,085	-0.4%	116,517 → 118,762	+1.9%
Int32Array.from([...])	179,600 → 184,398	+2.7%	150,495 → 167,882	🟢 +11.6%
Int32Array.of(1, 2, 3, 4, 5)	317,998 → 322,195	+1.3%	268,915 → 272,635	+1.4%
sequential write 100 elements	3,507 → 3,546	+1.1%	15,323 → 15,482	+1.0%
sequential read 100 elements	3,601 → 3,587	-0.4%	11,096 → 11,335	+2.2%
Float64Array write 100 elements	3,234 → 3,261	+0.8%	14,613 → 14,794	+1.2%
fill(42)	46,458 → 45,742	-1.5%	44,710 → 44,551	-0.4%
slice()	205,989 → 205,297	-0.3%	189,157 → 186,572	-1.4%
map(x => x * 2)	8,005 → 8,050	+0.6%	8,286 → 8,499	+2.6%
filter(x => x > 50)	8,293 → 8,361	+0.8%	8,551 → 8,798	+2.9%
reduce (sum)	7,689 → 7,858	+2.2%	7,197 → 7,409	+2.9%
sort()	133,502 → 170,141	🟢 +27.4%	152,206 → 152,732	+0.3%
indexOf()	448,236 → 453,549	+1.2%	375,610 → 386,244	+2.8%
reverse()	180,987 → 337,640	🟢 +86.6%	281,532 → 284,452	+1.0%
create view over existing buffer	413,703 → 417,827	+1.0%	155,937 → 155,131	-0.5%
subarray()	458,546 → 464,971	+1.4%	362,102 → 374,484	+3.4%
set() from array	578,565 → 580,197	+0.3%	277,090 → 281,009	+1.4%
for-of loop	4,839 → 4,916	+1.6%	20,898 → 21,349	+2.2%
spread into array	16,095 → 16,559	+2.9%	56,287 → 57,420	+2.0%

_{Measured on ubuntu-latest x64. Changes within ±7% are considered insignificant.}

[github-actions]

Suite Timing

Suite	Metric	Interpreted	Bytecode
Tests	Total	3501	3501
Tests	Passed	3460 ✅	3501 ✅
Tests	Skipped	41	0
Tests	Execution	143.8ms	146.9ms
Tests	Engine	283.2ms	537.7ms
Benchmarks	Total	254	254
Benchmarks	Duration	6.93min	12.39min

_{Measured on ubuntu-latest x64.}