test: TSC ES downlevel 적합성 테스트 230개 추가

[ohah]

Summary

• TSC references/typescript의 ES 다운레벨링 conformance 테스트 230개를 Bun 통합 테스트로 가져옴
• 버그 0개, panic 0개 확인

Coverage

카테고리	테스트 수
es5	단일파일 케이스
es2016~es2020	각 ES 버전 기능
emitter/es5, es2015, es2018, es2019	이미터 테스트
async/es5, es6, es2017	async/await 다운레벨링
총	230개

멀티파일(import) 13개는 단일파일 변환 불가로 제외.

Test plan

• bun test tests/downlevel-tsc.test.ts — 230/230 pass
• zig build test — 기존 유닛 테스트 전체 pass

🤖 Generated with Claude Code

[github-actions]

Smoke Test Results (CI)

Smoke Test Results

Project	ZTS	Size	Time	esbuild	Size	Time	rolldown	Size	Time	Output
lodash-es	OK	51KB	110ms	OK	65KB	54ms	OK	100KB	357ms	MATCH
preact	OK	13KB	3ms	OK	15KB	8ms	OK	13KB	120ms	MATCH
date-fns	OK	38KB	343ms	OK	47KB	36ms	OK	78KB	132ms	MATCH
uuid	OK	2KB	5ms	OK	2KB	7ms	OK	2KB	107ms	MATCH
zod	OK	418KB	83ms	OK	507KB	30ms	OK	90KB	133ms	MATCH
axios	OK	353KB	49ms	FAIL	414KB	27ms	OK	377KB	135ms	MATCH
toolkit	OK	78KB	11ms	OK	118KB	16ms	OK	38KB	114ms	MATCH
rxjs	OK	325KB	120ms	OK	369KB	44ms	OK	309KB	162ms	MATCH
immer	OK	22KB	5ms	OK	26KB	10ms	OK	23KB	114ms	MATCH
superjson	OK	23KB	14ms	OK	26KB	12ms	OK	24KB	117ms	MATCH
express	OK	787KB	83ms	OK	1129KB	40ms	OK	882KB	169ms	MATCH
react	OK	52KB	5ms	OK	64KB	9ms	OK	54KB	112ms	MATCH
commander	OK	70KB	8ms	OK	124KB	11ms	OK	104KB	117ms	MATCH
eventemitter3	OK	6KB	2ms	OK	8KB	6ms	OK	9KB	106ms	MATCH
ms	OK	3KB	2ms	OK	4KB	6ms	OK	4KB	112ms	MATCH
dotenv	OK	13KB	3ms	OK	16KB	6ms	OK	13KB	115ms	MATCH
jsonwebtoken	OK	115KB	28ms	OK	139KB	16ms	OK	142KB	126ms	MATCH
bcryptjs	OK	28KB	4ms	OK	31KB	8ms	OK	37KB	107ms	MATCH
clsx	OK	1KB	2ms	OK	1KB	6ms	OK	1KB	103ms	MATCH
tiny-invariant	OK	0KB	2ms	OK	1KB	6ms	OK	1KB	110ms	MATCH
tanstack-query	OK	48KB	9ms	OK	57KB	11ms	OK	49KB	123ms	MATCH
fast-glob	OK	164KB	31ms	OK	200KB	19ms	OK	187KB	128ms	MATCH
micromatch	OK	81KB	12ms	OK	100KB	11ms	OK	100KB	114ms	MATCH
semver	OK	55KB	13ms	OK	67KB	11ms	OK	52KB	110ms	MATCH
debug	OK	15KB	4ms	OK	20KB	7ms	OK	20KB	112ms	MATCH
chalk	OK	13KB	4ms	OK	15KB	7ms	OK	14KB	115ms	MATCH
yaml	OK	209KB	29ms	OK	262KB	20ms	OK	228KB	133ms	MATCH
yargs	OK	202KB	23ms	FAIL	222KB	18ms	OK	202KB	135ms	MATCH
effect	OK	550KB	428ms	OK	477KB	160ms	OK	368KB	272ms	MATCH
vue	OK	1624KB	118ms	OK	2008KB	78ms	OK	1605KB	257ms	MATCH
svelte	OK	94KB	25ms	OK	5KB	16ms	OK	4KB	125ms	MATCH
solid-js	OK	3KB	3ms	OK	2KB	7ms	OK	2KB	111ms	MATCH
three	OK	799KB	80ms	OK	414KB	84ms	OK	267KB	179ms	MATCH
graphql	OK	61KB	26ms	OK	605KB	34ms	OK	547KB	148ms	MATCH
supabase	OK	334KB	35ms	OK	758KB	33ms	OK	705KB	151ms	MATCH
mobx	OK	143KB	12ms	OK	271KB	20ms	OK	234KB	141ms	MATCH
jotai	OK	21KB	6ms	OK	23KB	8ms	OK	20KB	125ms	MATCH
valtio	OK	7KB	3ms	OK	8KB	7ms	OK	8KB	110ms	MATCH
react-dom	OK	530KB	26ms	OK	664KB	28ms	OK	516KB	154ms	MATCH
d3	OK	148KB	128ms	OK	99KB	63ms	OK	96KB	166ms	MATCH
hono	OK	45KB	15ms	OK	59KB	11ms	OK	52KB	126ms	MATCH
dayjs	OK	11KB	3ms	OK	14KB	6ms	OK	11KB	109ms	MATCH
nanoid	OK	1KB	2ms	OK	1KB	6ms	OK	1KB	110ms	MATCH
zlib	OK	97KB	11ms	OK	112KB	15ms	OK	102KB	125ms	MATCH
fp-ts	OK	0KB	2ms	OK	71KB	12ms	OK	100KB	117ms	MATCH
neverthrow	OK	11KB	3ms	OK	18KB	7ms	OK	13KB	115ms	MATCH
drizzle-orm	OK	22KB	77ms	OK	31KB	21ms	OK	26KB	123ms	MATCH
tslib	OK	22KB	4ms	OK	1KB	7ms	OK	1KB	108ms	MATCH
iconv-lite	OK	298KB	10ms	OK	546KB	14ms	OK	321KB	123ms	MATCH
qs	OK	78KB	23ms	OK	95KB	14ms	OK	81KB	126ms	MATCH
change-case	OK	3KB	2ms	OK	3KB	6ms	OK	3KB	108ms	MATCH
path-to-regexp	OK	12KB	3ms	OK	15KB	7ms	OK	9KB	115ms	MATCH
mime-types	OK	204KB	3ms	OK	235KB	14ms	OK	198KB	123ms	MATCH
ajv	OK	208KB	34ms	OK	244KB	20ms	OK	208KB	137ms	MATCH
cac	OK	17KB	3ms	OK	20KB	7ms	OK	19KB	115ms	MATCH
defu	OK	2KB	2ms	OK	2KB	6ms	OK	2KB	108ms	MATCH
pathe	OK	14KB	3ms	OK	3KB	7ms	OK	3KB	108ms	MATCH
destr	OK	2KB	2ms	OK	2KB	6ms	OK	2KB	106ms	MATCH
hookable	OK	6KB	2ms	OK	6KB	7ms	OK	5KB	111ms	MATCH
minimatch	OK	46KB	7ms	OK	57KB	11ms	OK	47KB	115ms	MATCH
cheerio	OK	1722KB	174ms	OK	2187KB	80ms	OK	1748KB	247ms	MATCH
is-glob	OK	4KB	2ms	OK	6KB	6ms	OK	5KB	115ms	MATCH
glob-parent	OK	6KB	3ms	OK	8KB	6ms	OK	6KB	114ms	MATCH
escape-string-regexp	OK	0KB	1ms	OK	0KB	6ms	OK	0KB	108ms	MATCH
fast-deep-equal	OK	2KB	2ms	OK	3KB	6ms	OK	2KB	103ms	MATCH
deepmerge	OK	4KB	2ms	OK	6KB	6ms	OK	5KB	109ms	MATCH
color-convert	OK	26KB	5ms	OK	27KB	8ms	OK	27KB	119ms	MATCH
picomatch	OK	48KB	7ms	OK	59KB	9ms	OK	55KB	115ms	MATCH
type-is	OK	212KB	5ms	OK	245KB	15ms	OK	210KB	119ms	MATCH
object-assign	OK	3KB	2ms	OK	4KB	6ms	OK	3KB	107ms	MATCH
has-flag	OK	0KB	1ms	OK	0KB	6ms	OK	2KB	108ms	MATCH
p-limit	OK	3KB	2ms	OK	4KB	6ms	OK	3KB	115ms	MATCH
strip-ansi	OK	1KB	2ms	OK	1KB	6ms	OK	1KB	111ms	MATCH
ansi-regex	OK	0KB	1ms	OK	1KB	6ms	OK	0KB	108ms	MATCH
wrap-ansi	OK	26KB	6ms	OK	27KB	9ms	OK	27KB	112ms	MATCH
supports-color	OK	4KB	2ms	OK	4KB	6ms	OK	5KB	107ms	MATCH
cross-spawn	OK	14KB	5ms	OK	18KB	9ms	OK	15KB	115ms	MATCH
lru-cache	OK	21KB	4ms	OK	23KB	8ms	OK	22KB	112ms	MATCH
signal-exit	OK	5KB	2ms	OK	7KB	6ms	OK	7KB	107ms	MATCH
which	OK	7KB	3ms	OK	10KB	7ms	OK	8KB	113ms	MATCH
string-width	OK	10KB	4ms	OK	10KB	7ms	OK	11KB	109ms	MATCH
safe-buffer	OK	2KB	2ms	OK	4KB	6ms	OK	2KB	103ms	MATCH
bytes	OK	3KB	2ms	OK	4KB	6ms	OK	4KB	112ms	MATCH
depd	OK	9KB	2ms	OK	12KB	7ms	OK	11KB	109ms	MATCH
merge-descriptors	OK	1KB	1ms	OK	2KB	6ms	OK	2KB	107ms	MATCH
content-type	OK	4KB	2ms	OK	5KB	6ms	OK	4KB	114ms	MATCH
cookie	OK	8KB	2ms	FAIL	10KB	6ms	FAIL	11KB	110ms	-
on-finished	OK	5KB	2ms	OK	7KB	7ms	OK	7KB	116ms	MATCH
statuses	OK	4KB	2ms	OK	6KB	6ms	OK	5KB	108ms	MATCH
etag	OK	2KB	2ms	OK	4KB	6ms	OK	3KB	108ms	MATCH
vary	OK	3KB	2ms	OK	4KB	6ms	OK	4KB	111ms	MATCH
flat	OK	1KB	2ms	OK	1KB	6ms	OK	1KB	110ms	MATCH
retry	OK	7KB	2ms	OK	9KB	6ms	OK	7KB	103ms	MATCH
camelcase	OK	5KB	2ms	OK	5KB	6ms	OK	6KB	112ms	MATCH
decamelize	OK	1KB	1ms	OK	1KB	6ms	OK	1KB	113ms	MATCH
memoize-one	OK	1KB	2ms	OK	3KB	6ms	OK	2KB	115ms	MATCH
rfdc	OK	6KB	2ms	OK	8KB	6ms	OK	6KB	114ms	MATCH
ohash	OK	4KB	2ms	OK	4KB	6ms	OK	4KB	112ms	MATCH
nanoevents	OK	0KB	2ms	OK	1KB	6ms	OK	1KB	113ms	MATCH
typebox	OK	99KB	49ms	OK	115KB	28ms	OK	122KB	136ms	MATCH
ts-pattern	OK	10KB	3ms	OK	12KB	8ms	OK	11KB	112ms	MATCH
valibot	OK	12KB	11ms	OK	7KB	15ms	OK	8KB	123ms	MATCH
ts-results-es	OK	20KB	4ms	OK	23KB	7ms	OK	30KB	110ms	MATCH
remeda	OK	2KB	24ms	OK	2KB	18ms	OK	2KB	119ms	MATCH
nanostores	OK	5KB	4ms	OK	6KB	7ms	OK	6KB	113ms	MATCH
ky	OK	26KB	6ms	OK	30KB	9ms	OK	30KB	117ms	MATCH
typedi	OK	13KB	4ms	OK	27KB	8ms	OK	28KB	115ms	MATCH
io-ts	OK	30KB	10ms	OK	104KB	15ms	OK	118KB	122ms	MATCH
type-fest	OK	0KB	1ms	OK	0KB	6ms	OK	0KB	108ms	MATCH
arktype	OK	261KB	63ms	OK	297KB	30ms	OK	273KB	143ms	MATCH
kysely	OK	245KB	92ms	OK	414KB	41ms	OK	396KB	144ms	MATCH
lodash-es@es5	OK	14KB	101ms	OK	19KB	54ms	OK	28KB	145ms	MATCH
clsx@es5	OK	1KB	2ms	OK	1KB	6ms	OK	1KB	116ms	MATCH
ms@es5	OK	4KB	2ms	OK	4KB	6ms	OK	4KB	112ms	MATCH
deepmerge@es5	OK	5KB	2ms	OK	6KB	6ms	OK	5KB	108ms	MATCH
fast-deep-equal@es5	OK	2KB	2ms	OK	3KB	6ms	OK	2KB	111ms	MATCH
semver@es5	OK	58KB	13ms	OK	67KB	11ms	OK	52KB	117ms	MATCH
lodash-es@es2015	OK	14KB	101ms	OK	19KB	53ms	OK	28KB	146ms	MATCH
superjson@es2015	OK	23KB	13ms	OK	26KB	10ms	OK	24KB	119ms	MATCH
flat@es2017	OK	1KB	2ms	OK	1KB	6ms	OK	1KB	114ms	MATCH
defu@es2017	OK	2KB	2ms	OK	2KB	6ms	OK	2KB	112ms	MATCH
picomatch@es2018	OK	48KB	6ms	OK	59KB	9ms	OK	55KB	122ms	MATCH
semver@es2019	OK	55KB	12ms	OK	67KB	12ms	OK	52KB	124ms	MATCH
clsx@es2019	OK	1KB	1ms	OK	1KB	6ms	OK	1KB	110ms	MATCH
nanoid@es2019	OK	1KB	2ms	OK	1KB	6ms	OK	1KB	111ms	MATCH
dayjs@es2020	OK	11KB	3ms	OK	14KB	7ms	OK	11KB	115ms	MATCH
ohash@es2020	OK	4KB	2ms	OK	4KB	6ms	OK	4KB	109ms	MATCH
lru-cache@es2021	OK	21KB	4ms	OK	23KB	8ms	OK	22KB	116ms	MATCH
nanostores@es2021	OK	2KB	4ms	OK	2KB	7ms	OK	2KB	113ms	MATCH

Size Comparison (ZTS vs esbuild)

Project	ZTS	esbuild	Ratio	Status
tslib	22KB	1KB	25.00x	❌
svelte	94KB	5KB	19.90x	❌
pathe	14KB	3KB	4.05x	❌
three	799KB	414KB	1.93x	❌
valibot	12KB	7KB	1.73x	❌
d3	148KB	99KB	1.49x	⚠️
clsx@es5	1KB	1KB	1.48x	⚠️
solid-js	3KB	2KB	1.17x	⚠️
effect	550KB	477KB	1.15x	⚠️
uuid	2KB	2KB	1.13x	⚠️
hookable	6KB	6KB	1.04x	✅
string-width	10KB	10KB	1.01x	✅
color-convert	26KB	27KB	0.95x	✅
wrap-ansi	26KB	27KB	0.94x	✅
camelcase	5KB	5KB	0.94x	✅
change-case	3KB	3KB	0.93x	✅
supports-color	4KB	4KB	0.93x	✅
remeda	2KB	2KB	0.93x	✅
destr	2KB	2KB	0.92x	✅
lru-cache	21KB	23KB	0.92x	✅
jotai	21KB	23KB	0.92x	✅
superjson@es2015	23KB	26KB	0.92x	✅
lru-cache@es2021	21KB	23KB	0.92x	✅
valtio	7KB	8KB	0.91x	✅
flat	1KB	1KB	0.90x	✅
bcryptjs	28KB	31KB	0.90x	✅
superjson	23KB	26KB	0.89x	✅
flat@es2017	1KB	1KB	0.89x	✅
decamelize	1KB	1KB	0.89x	✅
ky	26KB	30KB	0.88x	✅
rxjs	325KB	369KB	0.88x	✅
arktype	261KB	297KB	0.88x	✅
immer	22KB	26KB	0.88x	✅
ts-pattern	10KB	12KB	0.88x	✅
chalk	13KB	15KB	0.88x	✅
defu	2KB	2KB	0.87x	✅
zlib	97KB	112KB	0.87x	✅
preact	13KB	15KB	0.87x	✅
defu@es2017	2KB	2KB	0.87x	✅
ohash	4KB	4KB	0.87x	✅
mime-types	204KB	235KB	0.87x	✅
deepmerge@es5	5KB	6KB	0.87x	✅
type-is	212KB	245KB	0.87x	✅
clsx	1KB	1KB	0.87x	✅
ts-results-es	20KB	23KB	0.86x	✅
cac	17KB	20KB	0.86x	✅
ohash@es2020	4KB	4KB	0.86x	✅
semver@es5	58KB	67KB	0.86x	✅
p-limit	3KB	4KB	0.86x	✅
typebox	99KB	115KB	0.86x	✅
ajv	208KB	244KB	0.85x	✅
nanostores	5KB	6KB	0.85x	✅
clsx@es2019	1KB	1KB	0.84x	✅
tanstack-query	48KB	57KB	0.84x	✅
jsonwebtoken	115KB	139KB	0.83x	✅
semver	55KB	67KB	0.83x	✅
zod	418KB	507KB	0.82x	✅
qs	78KB	95KB	0.82x	✅
fast-glob	164KB	200KB	0.82x	✅
react	52KB	64KB	0.82x	✅
dotenv	13KB	16KB	0.82x	✅
strip-ansi	1KB	1KB	0.82x	✅
picomatch	48KB	59KB	0.82x	✅
semver@es2019	55KB	67KB	0.82x	✅
picomatch@es2018	48KB	59KB	0.82x	✅
has-flag	0KB	0KB	0.81x	✅
ansi-regex	0KB	1KB	0.81x	✅
micromatch	81KB	100KB	0.81x	✅
path-to-regexp	12KB	15KB	0.81x	✅
ms@es5	4KB	4KB	0.81x	✅
minimatch	46KB	57KB	0.81x	✅
vue	1624KB	2008KB	0.81x	✅
date-fns	38KB	47KB	0.81x	✅
fast-deep-equal@es5	2KB	3KB	0.80x	✅
react-dom	530KB	664KB	0.80x	✅
yaml	209KB	262KB	0.80x	✅
deepmerge	4KB	6KB	0.79x	✅
lodash-es	51KB	65KB	0.79x	✅
eventemitter3	6KB	8KB	0.79x	✅
nanostores@es2021	2KB	2KB	0.79x	✅
cheerio	1722KB	2187KB	0.79x	✅
tiny-invariant	0KB	1KB	0.78x	✅
rfdc	6KB	8KB	0.78x	✅
depd	9KB	12KB	0.78x	✅
retry	7KB	9KB	0.78x	✅
lodash-es@es5	14KB	19KB	0.77x	✅
lodash-es@es2015	14KB	19KB	0.77x	✅
which	7KB	10KB	0.77x	✅
nanoevents	0KB	1KB	0.76x	✅
dayjs	11KB	14KB	0.76x	✅
signal-exit	5KB	7KB	0.76x	✅
hono	45KB	59KB	0.76x	✅
dayjs@es2020	11KB	14KB	0.76x	✅
cross-spawn	14KB	18KB	0.76x	✅
nanoid	1KB	1KB	0.75x	✅
debug	15KB	20KB	0.75x	✅
content-type	4KB	5KB	0.74x	✅
nanoid@es2019	1KB	1KB	0.73x	✅
statuses	4KB	6KB	0.73x	✅
drizzle-orm	22KB	31KB	0.72x	✅
ms	3KB	4KB	0.71x	✅
bytes	3KB	4KB	0.71x	✅
express	787KB	1129KB	0.70x	✅
is-glob	4KB	6KB	0.69x	✅
vary	3KB	4KB	0.69x	✅
on-finished	5KB	7KB	0.68x	✅
glob-parent	6KB	8KB	0.68x	✅
object-assign	3KB	4KB	0.68x	✅
escape-string-regexp	0KB	0KB	0.68x	✅
fast-deep-equal	2KB	3KB	0.66x	✅
toolkit	78KB	118KB	0.66x	✅
etag	2KB	4KB	0.64x	✅
neverthrow	11KB	18KB	0.62x	✅
merge-descriptors	1KB	2KB	0.62x	✅
type-fest	0KB	0KB	0.62x	✅
safe-buffer	2KB	4KB	0.60x	✅
kysely	245KB	414KB	0.59x	✅
commander	70KB	124KB	0.56x	✅
iconv-lite	298KB	546KB	0.55x	✅
mobx	143KB	271KB	0.53x	✅
typedi	13KB	27KB	0.49x	✅
supabase	334KB	758KB	0.44x	✅
memoize-one	1KB	3KB	0.38x	✅
io-ts	30KB	104KB	0.29x	✅
graphql	61KB	605KB	0.10x	✅
fp-ts	0KB	71KB	0.00x	✅

Average ratio: 1.18x | Smaller: 114 | Similar(±10%): 2 | Larger: 10

Auto-generated by CI on 2026-03-26 20:47 UTC