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@plettj plettj commented Dec 4, 2025

The official SSE spec from WHATWG, which MDN is based on, states that the space after the colon should always be ignored.

The processSSEEvent utility previously required data: and didn't accept data:, which breaks valid implementations of the spec, such as the widely-used manucorporat/sse.


Fixes #771

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bug: Implementation of the SSE Specification is incorrect (Typescript SDK)

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