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fix(observable-polyfill): deliver promise rejections to custom subscribers - #7639

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MaXal:maxim.kolmakov/fix-cold-promise-rejection
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MaXal wants to merge 1 commit into
ReactiveX:masterfrom
MaXal:maxim.kolmakov/fix-cold-promise-rejection

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@MaXal

@MaXal MaXal commented Sep 16, 2026

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Use the public error method for subclass-provided subscribers while preserving internal error reporting for polyfill subscribers. Add regression coverage for multiple subscribers, missing error handlers, and cancellation.

Closes #7636

Description:

BREAKING CHANGE:

Related issue (if exists):

…ibers

Use the public error method for subclass-provided subscribers while preserving
internal error reporting for polyfill subscribers. Add regression coverage for
multiple subscribers, missing error handlers, and cancellation.

Closes ReactiveX#7636
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ColdObservable.from(promise) never delivers a rejection to the subscriber

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