RxJS 7 migration-evidence ledger

This generated ledger joins the versioned RxJS Next capability registry to the source-pinned RxJS 7 executable manifest. It records migration status and evidence; it does not promise an RxJS 7 runtime compatibility surface.

• RxJS 7 source: 7.x at e5351d02e225e275ac0e497c7b66eaa5f0c88791
• Entries: 161 (111 operators, 21 creation/static functions, 29 values/types)
• Distinct evidence cases: 2271
• Entries without source-pinned cases: 0
• Rows using canonical alias evidence: 4
• Rows using pinned non-marble or focused Next evidence: 3

The complete case IDs and source files are retained in packages/rxjs/test/ported/migration-evidence-ledger.generated.json. Every prioritized row has direct, canonical-alias, or supplemental evidence. Cold and fallback totals account for every linked executable case; supplemental rows name their pinned non-marble or focused Next sources explicitly.

Regenerate or verify the ledger with:

pnpm --filter rxjs run test:unit:ledger:generate
pnpm --filter rxjs run test:unit:ledger:check

Operators

RxJS 7 API	Next status	Evidence	Cases	Cold	Fallback	Classifications	Sharing	Cancellation	Types	Migration	Decisions
audit	Present; parity verified	source-pinned	21	21/21	21/21	portable	shared-active-platform	AbortSignal	preserved	mechanical-change	D-003, D-048, D-049
auditTime	Partial unified mapping	source-pinned	12	12/12	12/12	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
buffer	Present; parity verified	source-pinned	26	26/26	26/26	harness-rewrite, portable	shared-active-platform	AbortSignal	preserved	mechanical-change	D-003, D-048, D-049
bufferCount	Partial unified mapping	source-pinned	9	9/9	9/9	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
bufferTime	Present; scheduler adapted to host timing	source-pinned	18	18/18	18/18	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
bufferToggle	Present; parity unverified	source-pinned	18	18/18	18/18	intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
bufferWhen	Partial unified mapping	source-pinned	16	16/16	16/16	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
catchError	Present; parity unverified	source-pinned	18	17/18	17/18	compatibility-only, harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
combineLatest	Partial unified mapping	source-pinned	34	34/34	34/34	intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
combineLatestAll	Present; parity unverified	source-pinned	31	31/31	31/31	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
combineLatestWith	Partial unified mapping	source-pinned	30	30/30	30/30	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
concat	Partial unified mapping	source-pinned	27	27/27	27/27	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
concatAll	Partial unified mapping	source-pinned	30	30/30	30/30	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
concatMap	Partial unified mapping	source-pinned	34	34/34	34/34	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
concatMapTo	Partial unified mapping	source-pinned	18	18/18	18/18	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
concatWith	Partial unified mapping	source-pinned	22	22/22	22/22	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
connect	Present; parity unverified	source-pinned	50	50/50	48/50	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
count	Present; parity unverified	source-pinned	23	23/23	23/23	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
debounce	Present; parity unverified	source-pinned	26	26/26	26/26	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
debounceTime	Partial unified mapping	source-pinned	17	17/17	17/17	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
defaultIfEmpty	Present; parity unverified	source-pinned	7	7/7	7/7	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
delay	Present; scheduler adapted to host timing	source-pinned	43	43/43	43/43	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
delayWhen	Present; parity unverified	source-pinned	15	15/15	15/15	intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
dematerialize	Present; parity unverified	source-pinned	13	13/13	13/13	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
distinct	Present; parity unverified	source-pinned	22	22/22	22/22	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
distinctUntilChanged	Present; parity unverified	source-pinned	22	22/22	22/22	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
distinctUntilKeyChanged	Present; parity unverified	source-pinned	21	21/21	21/21	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
elementAt	Present; partial empty behavior	source-pinned	12	12/12	12/12	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
endWith	Partial unified mapping	source-pinned	16	16/16	16/16	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
every	Present; parity unverified	source-pinned	22	22/22	22/22	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
exhaust	Partial unified mapping	source-pinned-alias	15	15/15	15/15	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
exhaustAll	Partial unified mapping	source-pinned	15	15/15	15/15	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
exhaustMap	Present; parity unverified	source-pinned	18	17/18	17/18	compatibility-only, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
expand	Present; scheduler overload deferred	source-pinned	13	13/13	13/13	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
filter	Present; parity unverified	source-pinned	21	21/21	21/21	intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
finalize	Present; parity unverified	source-pinned	8	8/8	8/8	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
find	Present; parity unverified	source-pinned	12	12/12	12/12	intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
findIndex	Present; parity unverified	source-pinned	12	12/12	12/12	intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
first	Present; parity unverified	source-pinned	17	17/17	17/17	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
flatMap	Partial unified mapping	source-pinned-alias	149	143/149	143/149	compatibility-only, harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
groupBy	Present; scheduler-internal cases deferred	source-pinned	36	36/36	36/36	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
ignoreElements	Partial unified mapping	source-pinned	9	9/9	9/9	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
isEmpty	Present; parity unverified	source-pinned	7	7/7	7/7	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
last	Present; parity unverified	source-pinned	11	11/11	11/11	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
map	Present; parity unverified	source-pinned	93	92/93	93/93	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
mapTo	Partial unified mapping	source-pinned	11	11/11	11/11	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
materialize	Present; parity unverified	source-pinned	10	10/10	10/10	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
max	Present; parity unverified	source-pinned	18	18/18	18/18	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
merge	Partial unified mapping	source-pinned	1	1/1	1/1	intentional-divergence	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
mergeAll	Partial unified mapping	source-pinned	25	25/25	25/25	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
mergeMap	Partial unified mapping	source-pinned	149	143/149	143/149	compatibility-only, harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
mergeMapTo	Partial unified mapping	source-pinned	106	87/106	103/106	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
mergeScan	Present; parity unverified	source-pinned	20	20/20	20/20	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
mergeWith	Partial unified mapping	source-pinned	17	17/17	17/17	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
min	Present; parity unverified	source-pinned	18	18/18	18/18	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
multicast	Compatibility-only	source-pinned	70	65/70	68/70	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	semantic-review	D-003, D-039, D-048, D-049
observeOn	Partial scheduler mapping	source-pinned	7	7/7	7/7	harness-rewrite	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
onErrorResumeNext	Partial unified mapping	source-pinned	11	10/11	10/11	compatibility-only, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
pairwise	Present; parity unverified	source-pinned	7	7/7	7/7	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
pluck	Present; parity unverified	source-pinned	14	14/14	14/14	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
publish	Compatibility-only	source-pinned	64	63/64	62/64	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	semantic-review	D-003, D-039, D-048, D-049
publishBehavior	Compatibility-only	source-pinned	62	54/62	60/62	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	semantic-review	D-003, D-039, D-048, D-049
publishLast	Compatibility-only	source-pinned	61	61/61	59/61	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	semantic-review	D-003, D-039, D-048, D-049
publishReplay	Compatibility-only	source-pinned	69	60/69	66/69	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	semantic-review	D-003, D-039, D-048, D-049
race	Partial unified mapping	source-pinned	12	12/12	12/12	intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
raceWith	Partial unified mapping	source-pinned	10	10/10	10/10	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
reduce	Present; parity unverified	source-pinned	18	18/18	18/18	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
refCount	Compatibility-only	source-pinned	74	62/74	72/74	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	semantic-review	D-003, D-039, D-048, D-049
repeat	Partial unified mapping	source-pinned	64	60/64	64/64	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
repeatWhen	Present; parity unverified	source-pinned	20	20/20	20/20	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
retry	Partial unified mapping	source-pinned	67	63/67	65/67	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
retryWhen	Present; parity unverified	source-pinned	19	19/19	19/19	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
sample	Present; parity unverified	source-pinned	16	16/16	16/16	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
sampleTime	Present; scheduler adapted to host timing	source-pinned	10	10/10	10/10	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
scan	Present; parity unverified	source-pinned	12	12/12	12/12	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
sequenceEqual	Present; parity verified	source-pinned	23	23/23	23/23	harness-rewrite, portable	shared-active-platform	AbortSignal	preserved	mechanical-change	D-003, D-048, D-049
share	Present; platform lifecycle review required	source-pinned	176	176/176	174/176	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
shareReplay	Present; platform lifecycle review required	source-pinned	16	16/16	16/16	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
single	Present; parity unverified	source-pinned	25	25/25	25/25	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
skip	Present; parity unverified	source-pinned	29	29/29	29/29	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
skipLast	Present; parity unverified	source-pinned	16	16/16	16/16	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
skipUntil	Present; parity unverified	source-pinned	19	18/19	18/19	compatibility-only, harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
skipWhile	Present; parity unverified	source-pinned	15	15/15	15/15	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
startWith	Present; scheduler overload deferred	source-pinned	24	24/24	24/24	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
subscribeOn	Partial scheduler mapping	source-pinned	8	8/8	8/8	harness-rewrite	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
switchAll	Partial unified mapping	source-pinned	11	11/11	11/11	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
switchMap	Present; parity unverified	source-pinned	19	18/19	18/19	compatibility-only, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
switchMapTo	Partial unified mapping	source-pinned	15	15/15	15/15	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
switchScan	Present; parity unverified	source-pinned	18	18/18	18/18	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
take	Present; parity unverified	source-pinned	47	47/47	47/47	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
takeLast	Present; parity unverified	source-pinned	18	18/18	18/18	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
takeUntil	Present; parity unverified	source-pinned	23	23/23	23/23	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
takeWhile	Present; parity unverified	source-pinned	23	23/23	23/23	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
tap	Present; parity unverified	source-pinned	73	66/73	73/73	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
throttle	Present; parity unverified	source-pinned	28	28/28	28/28	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
throttleTime	Partial unified mapping	source-pinned	16	16/16	16/16	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
throwIfEmpty	Present; parity unverified	source-pinned	7	7/7	7/7	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
timeInterval	Present; scheduler adapted to host timing	source-pinned	11	11/11	11/11	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
timeout	Partial unified mapping	source-pinned	38	38/38	38/38	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
timeoutWith	Partial unified mapping	source-pinned	15	15/15	15/15	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
timestamp	Present; scheduler adapted to host timing	source-pinned	11	11/11	11/11	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
toArray	Partial unified mapping	source-pinned	15	15/15	15/15	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-048, D-049
window	Present; parity unverified	source-pinned	18	18/18	18/18	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
windowCount	Present; parity unverified	source-pinned	9	9/9	9/9	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
windowTime	Present; scheduler adapted to host timing	source-pinned	13	13/13	13/13	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-048, D-049
windowToggle	Present; parity unverified	source-pinned	19	19/19	19/19	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
windowWhen	Present; parity unverified	source-pinned	15	15/15	15/15	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
withLatestFrom	Unified mapping	source-pinned	17	17/17	17/17	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
zip	Compatibility alias	source-pinned	10	8/10	10/10	intentional-divergence, portable	shared-active-platform	AbortSignal	changed	semantic-review	D-003, D-039, D-048, D-049
zipAll	Present; parity unverified	source-pinned	46	46/46	46/46	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049
zipWith	Present; parity unverified	source-pinned	32	32/32	32/32	portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-048, D-049

Creation and static functions

RxJS 7 API	Next status	Evidence	Cases	Cold	Fallback	Classifications	Sharing	Cancellation	Types	Migration	Decisions
animationFrames	Present; parity unverified	source-pinned	4	4/4	4/4	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-033, D-034, D-040, D-048, D-049
combineLatest	Partial unified mapping	source-pinned	32	32/32	32/32	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-040, D-048, D-049
concat	Partial unified mapping	source-pinned	115	114/115	114/115	compatibility-only, harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-040, D-048, D-049
defer	Partial platform mapping	source-pinned	12	12/12	12/12	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
empty	Partial standalone mapping	source-pinned	1	1/1	1/1	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
forkJoin	Present; parity unverified	source-pinned	39	35/39	35/39	compatibility-only, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-040, D-048, D-049
from	Platform mapping	source-pinned	8	6/8	6/8	compatibility-only, harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-040
fromEvent	Partial platform string mapping	source-pinned	1	1/1	1/1	harness-rewrite	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
generate	Present; scheduler overload deferred	source-pinned	13	13/13	13/13	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-033, D-034, D-040, D-048, D-049
iif	Partial platform mapping	source-pinned	4	4/4	4/4	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
interval	Present; parity unverified	source-pinned	12	12/12	12/12	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-040, D-048, D-049
merge	Partial unified mapping	source-pinned	81	78/81	76/81	compatibility-only, harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-040, D-048, D-049
never	Partial standalone mapping	source-pinned-alias	42	42/42	42/42	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
of	Partial platform mapping	source-pinned	400	394/400	394/400	compatibility-only, harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
onErrorResumeNext	Partial unified mapping	source-pinned	3	3/3	3/3	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-040, D-048, D-049
pairs	Partial platform mapping	source-pinned	2	2/2	2/2	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
partition	Present; parity unverified	source-pinned	16	16/16	16/16	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-003, D-040, D-048, D-049
race	Partial unified mapping	source-pinned	15	15/15	15/15	portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-040, D-048, D-049
range	Partial platform mapping	source-pinned	3	3/3	3/3	harness-rewrite	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
throwError	Partial platform mapping	source-pinned	31	31/31	31/31	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
timer	Partial unified mapping	source-pinned	37	37/37	37/37	harness-rewrite, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-040, D-048, D-049

Values, types, and standalone functions

RxJS 7 API	Next status	Evidence	Cases	Cold	Fallback	Classifications	Sharing	Cancellation	Types	Migration	Decisions
ArgumentOutOfRangeError	Present; parity verified	source-pinned	2	2/2	2/2	portable	not-applicable	not-applicable	preserved	mechanical-change	D-040
AsyncSubject	Compatibility-only	source-pinned	48	48/48	46/48	harness-rewrite, intentional-divergence	subject-hot	AbortSignal	changed	semantic-review	D-035, D-039, D-040, D-050
BehaviorSubject	Partial standalone mapping	source-pinned	51	51/51	49/51	harness-rewrite, intentional-divergence, portable	subject-hot	AbortSignal	changed	mechanical-change-and-semantic-review	D-035, D-039, D-040, D-050
ColdObservable	Compatibility-only	supplemental	0	supplemental	supplemental	supplemental	producer-per-direct-subscription	AbortSignal	changed	semantic-review	D-035, D-037, D-039, D-040, D-050
config	Test compatibility fixture	source-pinned	3	3/3	3/3	harness-rewrite	not-applicable	test-local-adapter	changed	adapter	D-039, D-040
connectable	Present; parity unverified	source-pinned	2	2/2	2/2	harness-rewrite, portable	subject-hot	AbortSignal	changed	mechanical-change	D-035, D-039, D-040
ConnectableObservable	Compatibility-only	source-pinned	45	36/45	45/45	harness-rewrite, intentional-divergence, portable	subject-hot	AbortSignal	changed	semantic-review	D-035, D-039, D-040
EMPTY	Present; parity unverified	source-pinned	42	42/42	42/42	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-040
EmptyError	Present; parity unverified	source-pinned	13	13/13	13/13	portable	not-applicable	not-applicable	changed	mechanical-change	D-040
firstValueFrom	Partial platform mapping	supplemental	0	supplemental	supplemental	supplemental	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
fromEventPattern	Present; parity unverified	source-pinned	1	1/1	1/1	harness-rewrite	shared-active-platform	AbortSignal	changed	mechanical-change	D-040
identity	Present; parity verified	source-pinned	1	1/1	1/1	portable	not-applicable	not-applicable	preserved	mechanical-change	D-040
lastValueFrom	Partial platform mapping	supplemental	0	supplemental	supplemental	supplemental	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040
NEVER	Present; parity unverified	source-pinned	42	42/42	42/42	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-040
noop	Present; parity verified	source-pinned	6	6/6	6/6	harness-rewrite, portable	not-applicable	not-applicable	preserved	mechanical-change	D-040
NotFoundError	Present; parity unverified	source-pinned	4	4/4	4/4	portable	not-applicable	not-applicable	changed	mechanical-change	D-040
Notification	Compatibility-only	source-pinned	19	19/19	19/19	portable	not-applicable	not-applicable	changed	semantic-review	D-039, D-040
Observable	Platform mapping	source-pinned	85	76/85	77/85	compatibility-only, harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change	D-040
ObservableNotification	Type-only compatibility	source-pinned	4	4/4	4/4	portable	not-applicable	not-applicable	compatibility-only	semantic-review	D-039, D-040
Observer	Type-only compatibility	source-pinned	1	1/1	1/1	harness-rewrite	not-applicable	not-applicable	compatibility-only	semantic-review	D-039, D-040
Operator	Type-only compatibility	source-pinned	5	4/5	5/5	intentional-divergence	not-applicable	not-applicable	compatibility-only	semantic-review	D-039, D-040
pipe	Partial unified mapping	source-pinned	82	64/82	81/82	harness-rewrite, intentional-divergence, portable	receiver-selected	AbortSignal	changed	mechanical-change-and-semantic-review	D-003, D-040, D-048, D-049, D-050
ReplaySubject	Partial standalone mapping	source-pinned	58	56/58	56/58	harness-rewrite, intentional-divergence	subject-hot	AbortSignal	changed	mechanical-change-and-semantic-review	D-035, D-039, D-040, D-050
SequenceError	Present; parity unverified	source-pinned	5	5/5	5/5	portable	not-applicable	not-applicable	changed	mechanical-change	D-040
Subject	Present; observable view verified	source-pinned	75	72/75	73/75	harness-rewrite, intentional-divergence, portable	subject-hot	AbortSignal	changed	mechanical-change	D-035, D-039, D-040, D-050
Subscription	Type-only compatibility	source-pinned	10	6/10	10/10	harness-rewrite, intentional-divergence	not-applicable	not-applicable	compatibility-only	semantic-review	D-039, D-040
TimeInterval	Compatibility-only	source-pinned-alias	11	11/11	11/11	portable	not-applicable	not-applicable	changed	semantic-review	D-039, D-040
TimeoutError	Present; parity verified	source-pinned	38	38/38	38/38	portable	not-applicable	not-applicable	preserved	mechanical-change	D-040
zip	Partial standalone mapping	source-pinned	41	40/41	41/41	harness-rewrite, intentional-divergence, portable	shared-active-platform	AbortSignal	changed	mechanical-change-and-semantic-review	D-040