WPT
wpt / dom / observable / tentative / observable-reduce.any.worker.html
Spec: DOM ↗
Runs: Chrome 155.0.8041.0 (wpt@4a01b83e3, 2026-09-04) | Firefox 157.0a1 (wpt@e7122b73f, 2026-09-04) | Safari 251 preview (wpt@2c385f65e, 2026-09-04) | Ladybird 1.0-70fb3 (wpt@4a01b83e3, 2026-09-04) | Servo Servo 0.6 (wpt@7e3d005d7, 2026-09-03) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 8/8 | 0/8 | 0/8 | 0/8 | 0/8 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| reduce(): Reduces the values of the Observable, starting with the initial seed value | PASS | FAIL | FAIL | FAIL | FAIL | — |
| reduce(): Rejects if the source observable emits an error | PASS | FAIL | FAIL | FAIL | FAIL | — |
| reduce(): Seeds with the first value of the source, if no initial value is provided | PASS | FAIL | FAIL | FAIL | FAIL | — |
| reduce(): Errors thrown in reducer reject the promise and abort the source | PASS | FAIL | FAIL | FAIL | FAIL | — |
| reduce(): When source is empty, promise resolves with initial value | PASS | FAIL | FAIL | FAIL | FAIL | — |
| reduce(): When source is empty, AND no seed value is provided, the promise rejects with a TypeError | PASS | FAIL | FAIL | FAIL | FAIL | — |
| reduce(): Reject with an AbortError if the subscription is aborted before the source completes | PASS | FAIL | FAIL | FAIL | FAIL | — |
| reduce(): Reduces the values for different objects | PASS | FAIL | FAIL | FAIL | FAIL | — |