Test JSON output via public CLI surface

[frostney]

Summary

• remove the internal ScriptLoader JSON native test and replace it with CLI-level JSON smoke coverage
• keep TestRunner and BenchmarkRunner JSON assertions at the command/workflow layer
• document that the testing strategy should prefer public surfaces over internal helper-level tests

Verification

• ./format.pas --check
• ./build.pas loader benchmarkrunner tests
• local ScriptLoader JSON success/error smoke checks
• local TestRunner and BenchmarkRunner JSON output checks

Summary by CodeRabbit

• Chores

  • Added ScriptLoader JSON output validation to CI/CD pipelines, testing both success cases and error handling across default and bytecode execution modes.

• Documentation

  • Updated testing strategy documentation to emphasize exercising public-facing APIs over implementation details, improving test maintainability and clarity.

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 90290c15-8b42-499c-ac76-4af2454b873d

📥 Commits

Reviewing files that changed from the base of the PR and between 295bfb7 and 5046f7d.

📒 Files selected for processing (5)

• .github/workflows/ci.yml
• .github/workflows/pr.yml
• AGENTS.md
• docs/design-decisions.md
• docs/testing.md

📝 Walkthrough

Walkthrough

The PR updates CI workflows to add ScriptLoader JSON smoke tests validating successful execution and error handling, removes the dedicated Pascal unit test for ScriptLoader JSON, and revises testing documentation to emphasize public-facing entry point coverage over private implementation testing.

Changes

Cohort / File(s)	Summary
CI Workflows .github/workflows/ci.yml, .github/workflows/pr.yml	Added identical "Run ScriptLoader JSON smoke tests" steps that validate ScriptLoader JSON output for successful and error scenarios in both default and bytecode modes.
Testing Documentation AGENTS.md, docs/design-decisions.md, docs/testing.md	Updated testing guidance to prioritize public-facing entry points (CLI, JavaScript APIs) over internal implementation details; introduced routing rules favoring JavaScript feature tests and CLI smoke tests; replaced explicit test executable invocations with glob-based loop pattern.
Pascal Unit Test Removal units/Goccia.ScriptLoader.JSON.Test.pas	Removed entire test suite validating BuildSuccessJSON, ExceptionToScriptLoaderErrorInfo, and TGocciaThrowValue handling—functionality now covered by CI smoke tests.

Possibly related PRs

• Add structured JSON output to ScriptLoader #139: Adds JSON output support and ScriptLoader JSON unit test, directly related to the removed test artifact and smoke test validation.
• Add cross-compilation toolchain workflow #93: Modifies the same CI workflow files (.github/workflows/ci.yml and .github/workflows/pr.yml) with toolchain/job overhauls.
• Change wasm-tests CI to run Node harness instead of Pascal harness #61: Also updates CI/testing infrastructure by removing Pascal test harnesses in favor of Node/JSON-based test steps.

Poem

🐰 From Pascal tests to smoke so bright,
We hop through JSON output, pure delight!
Public paths lead the way, no hidden trails,
CI catches bugs while documentation sails! ✨

---

🎯 3 (Moderate) | ⏱️ ~25 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Test JSON output via public CLI surface' directly reflects the primary objective of this PR: replacing internal unit tests with CLI-level smoke tests. It clearly summarizes the main change without being vague or overly broad.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/public-json-cli-tests

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[github-actions]

Suite Timing

Suite	Metric	Interpreted	Bytecode
Tests	Total	3523	3523
Tests	Passed	3482 ✅	3523 ✅
Tests	Skipped	41	0
Tests	Execution	156.7ms	144.5ms
Tests	Engine	312.4ms	527.8ms
Benchmarks	Total	263	263
Benchmarks	Duration	7.31min	6.17min

_{Measured on ubuntu-latest x64.}

[github-actions]

Benchmark Results

263 benchmarks

Interpreted: 🔴 10 regressed · 253 unchanged · avg -3.0%
Bytecode: 🟢 5 improved · 🔴 3 regressed · 255 unchanged · avg -0.0%

arraybuffer.js — Interp: 14 unch. · avg -2.6% · Bytecode: 14 unch. · avg +0.1%

Benchmark	Interpreted	Δ	Bytecode	Δ
create ArrayBuffer(0)	475,006 → 457,571	-3.7%	508,984 → 503,270	-1.1%
create ArrayBuffer(64)	452,759 → 438,900	-3.1%	487,280 → 484,554	-0.6%
create ArrayBuffer(1024)	354,392 → 343,820	-3.0%	374,533 → 375,464	+0.2%
create ArrayBuffer(8192)	155,875 → 153,447	-1.6%	163,026 → 160,480	-1.6%
slice full buffer (64 bytes)	522,221 → 496,280	-5.0%	620,900 → 632,392	+1.9%
slice half buffer (512 of 1024 bytes)	447,427 → 428,214	-4.3%	532,665 → 521,759	-2.0%
slice with negative indices	438,233 → 419,000	-4.4%	576,125 → 575,404	-0.1%
slice empty range	499,798 → 480,595	-3.8%	612,795 → 610,243	-0.4%
byteLength access	1,374,612 → 1,395,733	+1.5%	1,623,834 → 1,602,906	-1.3%
Symbol.toStringTag access	1,043,301 → 1,060,910	+1.7%	1,082,522 → 1,080,417	-0.2%
ArrayBuffer.isView	746,064 → 742,674	-0.5%	871,584 → 871,174	-0.0%
clone ArrayBuffer(64)	429,418 → 409,237	-4.7%	485,196 → 486,945	+0.4%
clone ArrayBuffer(1024)	335,144 → 321,757	-4.0%	363,081 → 367,160	+1.1%
clone ArrayBuffer inside object	270,461 → 264,187	-2.3%	286,189 → 301,537	+5.4%

arrays.js — Interp: 🔴 1, 18 unch. · avg -2.7% · Bytecode: 🔴 1, 18 unch. · avg -0.7%

Benchmark	Interpreted	Δ	Bytecode	Δ
Array.from length 100	13,347 → 13,305	-0.3%	14,181 → 14,101	-0.6%
Array.from 10 elements	223,838 → 210,379	-6.0%	244,484 → 248,067	+1.5%
Array.of 10 elements	282,841 → 267,798	-5.3%	309,278 → 310,791	+0.5%
spread into new array	333,591 → 312,073	-6.5%	194,995 → 196,739	+0.9%
map over 50 elements	25,333 → 24,731	-2.4%	26,637 → 26,275	-1.4%
filter over 50 elements	22,886 → 22,389	-2.2%	23,598 → 21,470	🔴 -9.0%
reduce sum 50 elements	26,932 → 26,414	-1.9%	18,988 → 18,923	-0.3%
forEach over 50 elements	23,037 → 23,145	+0.5%	27,031 → 27,978	+3.5%
find in 50 elements	32,667 → 32,175	-1.5%	30,597 → 29,679	-3.0%
sort 20 elements	12,615 → 12,538	-0.6%	13,015 → 13,470	+3.5%
flat nested array	116,058 → 107,314	🔴 -7.5%	127,902 → 129,696	+1.4%
flatMap	72,801 → 69,293	-4.8%	80,368 → 82,571	+2.7%
map inside map (5x5)	20,622 → 19,810	-3.9%	22,174 → 22,236	+0.3%
filter inside map (5x10)	15,722 → 15,327	-2.5%	16,607 → 15,666	-5.7%
reduce inside map (5x10)	19,409 → 19,145	-1.4%	15,855 → 15,618	-1.5%
forEach inside forEach (5x10)	16,741 → 16,857	+0.7%	16,512 → 16,766	+1.5%
find inside some (10x10)	13,384 → 13,180	-1.5%	13,097 → 12,641	-3.5%
map+filter chain nested (5x20)	5,156 → 5,109	-0.9%	5,431 → 5,178	-4.6%
reduce flatten (10x5)	38,459 → 36,936	-4.0%	17,953 → 18,172	+1.2%

async-await.js — Interp: 🔴 1, 5 unch. · avg -3.7% · Bytecode: 6 unch. · avg -0.8%

Benchmark	Interpreted	Δ	Bytecode	Δ
single await	381,265 → 368,375	-3.4%	412,956 → 406,700	-1.5%
multiple awaits	170,779 → 164,539	-3.7%	181,839 → 179,914	-1.1%
await non-Promise value	861,030 → 839,806	-2.5%	1,095,366 → 1,085,424	-0.9%
await with try/catch	368,955 → 359,761	-2.5%	407,800 → 403,191	-1.1%
await Promise.all	52,320 → 48,596	🔴 -7.1%	52,264 → 52,311	+0.1%
nested async function call	194,053 → 187,997	-3.1%	232,376 → 231,036	-0.6%

classes.js — Interp: 31 unch. · avg -2.6% · Bytecode: 🟢 1, 🔴 1, 29 unch. · avg -0.6%

Benchmark	Interpreted	Δ	Bytecode	Δ
simple class new	140,247 → 138,475	-1.3%	204,933 → 203,452	-0.7%
class with defaults	111,969 → 112,806	+0.7%	142,654 → 141,811	-0.6%
50 instances via Array.from	5,473 → 5,695	+4.1%	7,911 → 7,908	-0.0%
instance method call	71,234 → 69,954	-1.8%	93,808 → 93,106	-0.7%
static method call	115,780 → 111,946	-3.3%	184,049 → 180,793	-1.8%
single-level inheritance	56,493 → 54,739	-3.1%	74,083 → 74,019	-0.1%
two-level inheritance	48,528 → 47,150	-2.8%	59,543 → 60,568	+1.7%
private field access	71,111 → 71,042	-0.1%	95,802 → 94,132	-1.7%
private methods	78,524 → 77,561	-1.2%	102,184 → 99,372	-2.8%
getter/setter access	77,331 → 75,055	-2.9%	105,954 → 103,774	-2.1%
class decorator (identity)	95,172 → 92,522	-2.8%	101,738 → 99,727	-2.0%
class decorator (wrapping)	55,178 → 53,810	-2.5%	57,312 → 58,906	+2.8%
identity method decorator	66,981 → 64,241	-4.1%	90,584 → 89,077	-1.7%
wrapping method decorator	53,724 → 51,165	-4.8%	59,019 → 59,496	+0.8%
stacked method decorators (x3)	36,243 → 34,674	-4.3%	45,436 → 44,968	-1.0%
identity field decorator	73,093 → 70,505	-3.5%	71,247 → 71,456	+0.3%
field initializer decorator	61,066 → 59,257	-3.0%	64,501 → 70,855	🟢 +9.9%
getter decorator (identity)	66,296 → 66,025	-0.4%	75,440 → 69,345	🔴 -8.1%
setter decorator (identity)	56,024 → 54,158	-3.3%	59,632 → 62,982	+5.6%
static method decorator	72,278 → 69,641	-3.6%	81,722 → 76,748	-6.1%
static field decorator	84,424 → 81,212	-3.8%	84,640 → 86,106	+1.7%
private method decorator	54,742 → 52,338	-4.4%	69,496 → 68,884	-0.9%
private field decorator	60,354 → 58,139	-3.7%	60,607 → 60,492	-0.2%
plain auto-accessor (no decorator)	105,894 → 101,279	-4.4%	95,721 → 93,624	-2.2%
auto-accessor with decorator	55,776 → 53,775	-3.6%	55,458 → 55,065	-0.7%
decorator writing metadata	45,883 → 44,287	-3.5%	48,939 → 48,504	-0.9%
static getter read	131,104 → 126,511	-3.5%	163,185 → 163,971	+0.5%
static getter/setter pair	99,776 → 98,330	-1.4%	117,361 → 121,059	+3.2%
inherited static getter	79,510 → 78,328	-1.5%	99,312 → 93,601	-5.8%
inherited static setter	84,232 → 83,100	-1.3%	103,533 → 99,965	-3.4%
inherited static getter with this binding	71,983 → 68,310	-5.1%	88,614 → 87,119	-1.7%

closures.js — Interp: 11 unch. · avg -2.3% · Bytecode: 11 unch. · avg -0.6%

Benchmark	Interpreted	Δ	Bytecode	Δ
closure over single variable	134,502 → 131,012	-2.6%	276,017 → 271,817	-1.5%
closure over multiple variables	121,492 → 121,452	-0.0%	189,096 → 187,766	-0.7%
nested closures	130,374 → 125,133	-4.0%	224,691 → 225,750	+0.5%
function as argument	95,965 → 92,674	-3.4%	245,691 → 245,860	+0.1%
function returning function	120,539 → 118,763	-1.5%	283,869 → 272,451	-4.0%
compose two functions	72,399 → 70,285	-2.9%	149,800 → 149,514	-0.2%
fn.call	153,854 → 152,966	-0.6%	221,538 → 229,041	+3.4%
fn.apply	111,517 → 109,082	-2.2%	155,979 → 158,012	+1.3%
fn.bind	145,248 → 140,365	-3.4%	282,544 → 272,688	-3.5%
recursive sum to 50	12,192 → 11,858	-2.7%	23,453 → 23,569	+0.5%
recursive tree traversal	20,707 → 20,312	-1.9%	35,535 → 34,640	-2.5%

collections.js — Interp: 🔴 1, 11 unch. · avg -2.2% · Bytecode: 12 unch. · avg -0.5%

Benchmark	Interpreted	Δ	Bytecode	Δ
add 50 elements	7,201 → 6,996	-2.9%	7,224 → 7,196	-0.4%
has lookup (50 elements)	91,208 → 89,236	-2.2%	100,152 → 99,173	-1.0%
delete elements	47,793 → 46,986	-1.7%	49,631 → 48,959	-1.4%
forEach iteration	15,710 → 15,403	-1.9%	15,411 → 15,526	+0.7%
spread to array	29,191 → 28,108	-3.7%	217,050 → 210,234	-3.1%
deduplicate array	38,932 → 37,573	-3.5%	71,613 → 71,338	-0.4%
set 50 entries	5,261 → 5,367	+2.0%	5,445 → 5,534	+1.6%
get lookup (50 entries)	87,273 → 87,463	+0.2%	92,240 → 93,018	+0.8%
has check	130,987 → 129,678	-1.0%	142,504 → 142,696	+0.1%
delete entries	45,766 → 45,959	+0.4%	46,985 → 47,640	+1.4%
forEach iteration	15,866 → 15,306	-3.5%	15,303 → 15,325	+0.1%
keys/values/entries	8,091 → 7,385	🔴 -8.7%	27,367 → 26,028	-4.9%

destructuring.js — Interp: 🔴 1, 21 unch. · avg -3.9% · Bytecode: 🔴 1, 21 unch. · avg -0.0%

Benchmark	Interpreted	Δ	Bytecode	Δ
simple array destructuring	373,959 → 368,514	-1.5%	262,770 → 254,410	-3.2%
with rest element	246,944 → 235,644	-4.6%	203,886 → 205,342	+0.7%
with defaults	385,812 → 378,131	-2.0%	301,341 → 292,261	-3.0%
skip elements	398,670 → 388,338	-2.6%	283,508 → 276,022	-2.6%
nested array destructuring	172,803 → 160,029	🔴 -7.4%	87,755 → 86,234	-1.7%
swap variables	505,395 → 479,331	-5.2%	326,613 → 326,084	-0.2%
simple object destructuring	315,390 → 301,946	-4.3%	404,199 → 403,245	-0.2%
with defaults	347,729 → 337,593	-2.9%	536,768 → 562,258	+4.7%
with renaming	329,067 → 324,509	-1.4%	434,587 → 434,018	-0.1%
nested object destructuring	154,986 → 149,505	-3.5%	190,293 → 198,408	+4.3%
rest properties	190,471 → 183,971	-3.4%	178,757 → 177,633	-0.6%
object parameter	97,864 → 94,086	-3.9%	144,270 → 150,739	+4.5%
array parameter	123,973 → 119,498	-3.6%	109,553 → 101,820	🔴 -7.1%
mixed destructuring in map	33,812 → 33,056	-2.2%	33,161 → 34,386	+3.7%
forEach with array destructuring	65,219 → 60,884	-6.6%	41,582 → 40,014	-3.8%
map with array destructuring	64,490 → 60,300	-6.5%	41,566 → 42,252	+1.6%
filter with array destructuring	66,894 → 63,081	-5.7%	46,610 → 46,077	-1.1%
reduce with array destructuring	73,793 → 69,814	-5.4%	45,322 → 46,066	+1.6%
map with object destructuring	74,766 → 72,844	-2.6%	86,413 → 86,293	-0.1%
map with nested destructuring	61,935 → 60,689	-2.0%	83,700 → 84,267	+0.7%
map with rest in destructuring	42,557 → 40,641	-4.5%	23,431 → 23,791	+1.5%
map with defaults in destructuring	57,642 → 55,830	-3.1%	64,143 → 64,269	+0.2%

fibonacci.js — Interp: 8 unch. · avg -3.4% · Bytecode: 8 unch. · avg -0.5%

Benchmark	Interpreted	Δ	Bytecode	Δ
recursive fib(15)	324 → 317	-2.3%	834 → 827	-0.9%
recursive fib(20)	29 → 29	-2.4%	76 → 74	-2.0%
recursive fib(15) typed	336 → 321	-4.6%	878 → 873	-0.6%
recursive fib(20) typed	30 → 29	-2.8%	79 → 79	-0.9%
iterative fib(20) via reduce	12,079 → 11,899	-1.5%	17,578 → 17,617	+0.2%
iterator fib(20)	9,507 → 9,342	-1.7%	18,539 → 18,060	-2.6%
iterator fib(20) via Iterator.from + take	15,711 → 14,795	-5.8%	19,995 → 20,573	+2.9%
iterator fib(20) last value via reduce	11,963 → 11,274	-5.8%	14,909 → 14,860	-0.3%

for-of.js — Interp: 7 unch. · avg -3.1% · Bytecode: 7 unch. · avg -0.2%

Benchmark	Interpreted	Δ	Bytecode	Δ
for...of with 10-element array	47,025 → 45,329	-3.6%	161,656 → 162,169	+0.3%
for...of with 100-element array	5,424 → 5,233	-3.5%	17,315 → 17,424	+0.6%
for...of with string (10 chars)	34,134 → 33,576	-1.6%	87,428 → 87,828	+0.5%
for...of with Set (10 elements)	47,667 → 45,821	-3.9%	149,696 → 147,184	-1.7%
for...of with Map entries (10 entries)	30,068 → 28,821	-4.1%	27,709 → 27,338	-1.3%
for...of with destructuring	40,173 → 39,644	-1.3%	36,468 → 35,017	-4.0%
for-await-of with sync array	45,210 → 43,630	-3.5%	120,241 → 125,668	+4.5%

helpers/bench-module.js — Interp: 0 · Bytecode: 0

Benchmark	Interpreted	Δ	Bytecode	Δ

iterators.js — Interp: 20 unch. · avg -4.2% · Bytecode: 🟢 1, 19 unch. · avg +0.8%

Benchmark	Interpreted	Δ	Bytecode	Δ
Iterator.from({next}).toArray() — 20 elements	15,787 → 15,139	-4.1%	20,058 → 19,864	-1.0%
Iterator.from({next}).toArray() — 50 elements	6,883 → 6,667	-3.1%	8,809 → 9,277	+5.3%
spread pre-wrapped iterator — 20 elements	11,796 → 11,377	-3.6%	20,041 → 19,976	-0.3%
Iterator.from({next}).forEach — 50 elements	4,781 → 4,545	-4.9%	5,374 → 5,827	🟢 +8.4%
Iterator.from({next}).reduce — 50 elements	4,846 → 4,595	-5.2%	5,599 → 5,373	-4.0%
wrap array iterator	165,834 → 155,679	-6.1%	172,026 → 182,171	+5.9%
wrap plain {next()} object	10,957 → 10,620	-3.1%	14,319 → 14,142	-1.2%
map + toArray (50 elements)	4,739 → 4,634	-2.2%	5,960 → 5,966	+0.1%
filter + toArray (50 elements)	4,660 → 4,472	-4.0%	5,745 → 5,818	+1.3%
take(10) + toArray (50 element source)	28,611 → 27,336	-4.5%	36,110 → 36,071	-0.1%
drop(40) + toArray (50 element source)	6,910 → 6,594	-4.6%	8,951 → 9,142	+2.1%
chained map + filter + take (100 element source)	8,297 → 8,186	-1.3%	10,254 → 10,315	+0.6%
some + every (50 elements)	2,720 → 2,642	-2.9%	3,498 → 3,469	-0.8%
find (50 elements)	5,948 → 5,720	-3.8%	7,272 → 7,168	-1.4%
array.values().map().filter().toArray()	8,334 → 7,975	-4.3%	9,775 → 9,975	+2.1%
array.values().take(5).toArray()	215,171 → 203,592	-5.4%	235,305 → 232,646	-1.1%
array.values().drop(45).toArray()	200,648 → 189,715	-5.4%	215,488 → 212,728	-1.3%
map.entries() chained helpers	10,456 → 9,820	-6.1%	5,987 → 6,133	+2.4%
set.values() chained helpers	17,450 → 16,748	-4.0%	19,916 → 19,569	-1.7%
string iterator map + toArray	13,784 → 13,062	-5.2%	14,685 → 14,822	+0.9%

json.js — Interp: 20 unch. · avg -2.0% · Bytecode: 🟢 1, 19 unch. · avg +2.3%

Benchmark	Interpreted	Δ	Bytecode	Δ
parse simple object	177,801 → 169,792	-4.5%	176,689 → 179,771	+1.7%
parse nested object	107,995 → 104,071	-3.6%	103,867 → 106,397	+2.4%
parse array of objects	62,576 → 61,915	-1.1%	62,806 → 64,734	+3.1%
parse large flat object	68,977 → 67,893	-1.6%	66,856 → 69,625	+4.1%
parse mixed types	79,578 → 79,327	-0.3%	80,093 → 83,635	+4.4%
stringify simple object	199,912 → 192,333	-3.8%	203,992 → 209,523	+2.7%
stringify nested object	109,332 → 106,973	-2.2%	112,679 → 114,756	+1.8%
stringify array of objects	61,017 → 59,881	-1.9%	61,062 → 62,503	+2.4%
stringify mixed types	89,283 → 86,448	-3.2%	90,002 → 92,770	+3.1%
reviver doubles numbers	49,506 → 48,210	-2.6%	53,976 → 51,775	-4.1%
reviver filters properties	41,150 → 40,198	-2.3%	41,642 → 43,484	+4.4%
reviver on nested object	51,844 → 51,411	-0.8%	54,419 → 53,165	-2.3%
reviver on array	32,800 → 32,090	-2.2%	31,104 → 34,014	🟢 +9.4%
replacer function doubles numbers	47,818 → 46,826	-2.1%	52,036 → 52,367	+0.6%
replacer function excludes properties	61,566 → 59,958	-2.6%	60,599 → 63,855	+5.4%
array replacer (allowlist)	113,127 → 109,725	-3.0%	118,234 → 117,385	-0.7%
stringify with 2-space indent	95,544 → 93,559	-2.1%	99,202 → 102,473	+3.3%
stringify with tab indent	96,650 → 95,616	-1.1%	100,451 → 100,413	-0.0%
parse then stringify	55,313 → 55,877	+1.0%	58,102 → 58,592	+0.8%
stringify then parse	33,887 → 34,005	+0.3%	35,483 → 36,446	+2.7%

jsx.jsx — Interp: 21 unch. · avg -3.9% · Bytecode: 21 unch. · avg -0.5%

Benchmark	Interpreted	Δ	Bytecode	Δ
simple element	217,663 → 207,241	-4.8%	311,935 → 321,032	+2.9%
self-closing element	223,761 → 212,006	-5.3%	347,388 → 334,645	-3.7%
element with string attribute	180,892 → 172,052	-4.9%	246,850 → 247,809	+0.4%
element with multiple attributes	161,258 → 152,720	-5.3%	202,868 → 196,339	-3.2%
element with expression attribute	169,985 → 164,699	-3.1%	245,557 → 248,619	+1.2%
text child	215,280 → 206,362	-4.1%	317,614 → 309,747	-2.5%
expression child	212,216 → 203,238	-4.2%	312,334 → 317,393	+1.6%
mixed text and expression	201,715 → 194,537	-3.6%	288,113 → 279,251	-3.1%
nested elements (3 levels)	80,260 → 77,714	-3.2%	116,314 → 119,209	+2.5%
sibling children	60,427 → 58,300	-3.5%	87,157 → 87,712	+0.6%
component element	153,794 → 145,319	-5.5%	220,316 → 220,826	+0.2%
component with children	94,586 → 89,916	-4.9%	138,641 → 136,333	-1.7%
dotted component	128,403 → 123,348	-3.9%	173,039 → 169,953	-1.8%
empty fragment	227,226 → 215,782	-5.0%	368,021 → 361,870	-1.7%
fragment with children	59,753 → 57,792	-3.3%	87,718 → 87,693	-0.0%
spread attributes	112,668 → 110,579	-1.9%	133,091 → 133,418	+0.2%
spread with overrides	98,561 → 94,049	-4.6%	113,973 → 114,251	+0.2%
shorthand props	166,475 → 159,739	-4.0%	232,128 → 231,534	-0.3%
nav bar structure	27,946 → 26,900	-3.7%	38,997 → 38,871	-0.3%
card component tree	32,630 → 31,291	-4.1%	44,490 → 44,515	+0.1%
10 list items via Array.from	14,298 → 14,397	+0.7%	19,699 → 19,342	-1.8%

modules.js — Interp: 9 unch. · avg +1.4% · Bytecode: 🟢 2, 7 unch. · avg +3.4%

Benchmark	Interpreted	Δ	Bytecode	Δ
call imported function	474,237 → 476,140	+0.4%	641,543 → 658,408	+2.6%
call two imported functions	261,022 → 264,961	+1.5%	363,423 → 351,168	-3.4%
read imported constant	1,627,541 → 1,670,576	+2.6%	3,371,165 → 3,659,740	🟢 +8.6%
read imported string	1,638,417 → 1,650,683	+0.7%	3,397,177 → 3,647,035	🟢 +7.4%
read JSON string property	1,645,596 → 1,662,405	+1.0%	3,541,243 → 3,661,853	+3.4%
read JSON number property	1,614,304 → 1,651,164	+2.3%	3,478,609 → 3,627,088	+4.3%
read JSON boolean property	1,652,152 → 1,671,011	+1.1%	3,599,951 → 3,657,649	+1.6%
read JSON array property	1,644,942 → 1,650,793	+0.4%	3,613,018 → 3,658,821	+1.3%
read multiple JSON properties	928,753 → 950,511	+2.3%	3,147,354 → 3,298,323	+4.8%

numbers.js — Interp: 🔴 1, 10 unch. · avg -2.4% · Bytecode: 11 unch. · avg -1.2%

Benchmark	Interpreted	Δ	Bytecode	Δ
integer arithmetic	517,313 → 522,310	+1.0%	1,481,621 → 1,499,136	+1.2%
floating point arithmetic	586,610 → 609,978	+4.0%	973,363 → 967,135	-0.6%
number coercion	194,113 → 182,871	-5.8%	232,596 → 228,068	-1.9%
toFixed	102,724 → 101,166	-1.5%	110,686 → 111,733	+0.9%
toString	158,712 → 151,824	-4.3%	192,628 → 188,422	-2.2%
valueOf	234,325 → 217,681	🔴 -7.1%	270,330 → 260,910	-3.5%
toPrecision	145,632 → 141,066	-3.1%	169,064 → 162,660	-3.8%
Number.isNaN	316,642 → 317,618	+0.3%	343,925 → 340,754	-0.9%
Number.isFinite	317,216 → 304,683	-4.0%	324,477 → 318,835	-1.7%
Number.isInteger	322,826 → 323,231	+0.1%	351,617 → 348,888	-0.8%
Number.parseInt and parseFloat	263,745 → 248,710	-5.7%	262,240 → 263,483	+0.5%

objects.js — Interp: 🔴 2, 5 unch. · avg -4.1% · Bytecode: 7 unch. · avg +1.1%

Benchmark	Interpreted	Δ	Bytecode	Δ
create simple object	483,242 → 462,526	-4.3%	566,038 → 582,194	+2.9%
create nested object	232,442 → 226,815	-2.4%	256,260 → 250,847	-2.1%
create 50 objects via Array.from	9,298 → 8,879	-4.5%	9,770 → 9,936	+1.7%
property read	567,110 → 567,441	+0.1%	426,703 → 433,886	+1.7%
Object.keys	289,133 → 268,694	🔴 -7.1%	311,238 → 319,155	+2.5%
Object.entries	103,580 → 95,777	🔴 -7.5%	112,499 → 110,428	-1.8%
spread operator	179,971 → 174,782	-2.9%	200,310 → 205,435	+2.6%

promises.js — Interp: 🔴 2, 10 unch. · avg -4.4% · Bytecode: 12 unch. · avg -1.6%

Benchmark	Interpreted	Δ	Bytecode	Δ
Promise.resolve(value)	556,166 → 529,364	-4.8%	554,995 → 563,553	+1.5%
new Promise(resolve => resolve(value))	190,643 → 181,017	-5.0%	229,004 → 226,718	-1.0%
Promise.reject(reason)	563,353 → 529,748	-6.0%	547,566 → 552,978	+1.0%
resolve + then (1 handler)	178,373 → 173,087	-3.0%	201,320 → 197,955	-1.7%
resolve + then chain (3 deep)	69,464 → 68,196	-1.8%	79,175 → 77,425	-2.2%
resolve + then chain (10 deep)	21,563 → 21,495	-0.3%	26,004 → 25,254	-2.9%
reject + catch + then	98,668 → 97,098	-1.6%	113,841 → 111,225	-2.3%
resolve + finally + then	83,882 → 81,426	-2.9%	95,236 → 92,221	-3.2%
Promise.all (5 resolved)	31,518 → 29,623	-6.0%	34,228 → 33,230	-2.9%
Promise.race (5 resolved)	34,264 → 31,713	🔴 -7.4%	36,104 → 35,359	-2.1%
Promise.allSettled (5 mixed)	27,206 → 25,523	-6.2%	28,392 → 28,090	-1.1%
Promise.any (5 mixed)	32,382 → 29,976	🔴 -7.4%	33,918 → 33,176	-2.2%

strings.js — Interp: 11 unch. · avg -2.3% · Bytecode: 11 unch. · avg -1.0%

Benchmark	Interpreted	Δ	Bytecode	Δ
string concatenation	414,555 → 415,005	+0.1%	325,348 → 325,149	-0.1%
template literal	630,589 → 671,600	+6.5%	648,777 → 655,692	+1.1%
string repeat	408,996 → 394,107	-3.6%	472,015 → 471,102	-0.2%
split and join	140,035 → 135,249	-3.4%	153,731 → 150,533	-2.1%
indexOf and includes	170,113 → 164,676	-3.2%	197,234 → 191,784	-2.8%
toUpperCase and toLowerCase	259,193 → 245,404	-5.3%	330,069 → 323,810	-1.9%
slice and substring	154,715 → 150,846	-2.5%	203,127 → 197,972	-2.5%
trim operations	189,408 → 180,151	-4.9%	244,256 → 242,525	-0.7%
replace and replaceAll	209,195 → 204,336	-2.3%	241,187 → 241,157	-0.0%
startsWith and endsWith	135,715 → 130,472	-3.9%	159,006 → 159,996	+0.6%
padStart and padEnd	197,028 → 191,613	-2.7%	232,099 → 227,189	-2.1%

typed-arrays.js — Interp: 🔴 1, 21 unch. · avg -4.4% · Bytecode: 22 unch. · avg +0.0%

Benchmark	Interpreted	Δ	Bytecode	Δ
new Int32Array(0)	338,794 → 320,734	-5.3%	376,835 → 371,330	-1.5%
new Int32Array(100)	312,223 → 291,109	-6.8%	337,186 → 331,577	-1.7%
new Int32Array(1000)	184,167 → 181,993	-1.2%	197,888 → 193,391	-2.3%
new Float64Array(100)	276,325 → 268,392	-2.9%	311,189 → 301,687	-3.1%
Int32Array.from([...])	186,091 → 175,149	-5.9%	192,269 → 193,903	+0.8%
Int32Array.of(1, 2, 3, 4, 5)	316,350 → 290,107	🔴 -8.3%	361,304 → 359,057	-0.6%
sequential write 100 elements	3,645 → 3,468	-4.9%	15,546 → 16,034	+3.1%
sequential read 100 elements	3,715 → 3,528	-5.0%	10,387 → 10,456	+0.7%
Float64Array write 100 elements	3,404 → 3,283	-3.5%	10,771 → 11,003	+2.2%
fill(42)	45,779 → 46,807	+2.2%	45,970 → 47,362	+3.0%
slice()	205,348 → 198,581	-3.3%	221,874 → 219,745	-1.0%
map(x => x * 2)	8,139 → 7,612	-6.5%	8,824 → 8,974	+1.7%
filter(x => x > 50)	8,445 → 8,131	-3.7%	9,721 → 9,908	+1.9%
reduce (sum)	8,144 → 7,742	-4.9%	7,316 → 7,394	+1.1%
sort()	169,232 → 163,397	-3.4%	173,507 → 173,960	+0.3%
indexOf()	427,499 → 416,710	-2.5%	497,477 → 494,975	-0.5%
reverse()	330,011 → 317,847	-3.7%	357,712 → 359,742	+0.6%
create view over existing buffer	414,132 → 385,701	-6.9%	451,500 → 447,081	-1.0%
subarray()	438,048 → 408,304	-6.8%	532,103 → 519,591	-2.4%
set() from array	574,080 → 551,805	-3.9%	641,273 → 651,529	+1.6%
for-of loop	5,185 → 4,908	-5.3%	17,817 → 17,924	+0.6%
spread into array	17,352 → 16,411	-5.4%	96,537 → 93,851	-2.8%

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