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This release fixes issues for SREs watching stability and regressions.

Published 9h MCP Data & Storage
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

durable durable-streams real-time streaming streamstore typescript
+1 more
write-ahead-log

Summary

AI summary

Updates Patch Changes, c543af5, and df2daab across a mixed release.

Changes in this release

Bugfix Medium

Abort during in-flight append no longer corrupts capacity accounting.

Abort during in-flight append no longer corrupts capacity accounting.

Source: llm_adapter@2026-06-03

Confidence: high

Bugfix Medium

Treat browser TypeError("network error") as retryable SDK network error.

Treat browser TypeError("network error") as retryable SDK network error.

Source: llm_adapter@2026-06-03

Confidence: high

Bugfix Medium

Make fetch read-session cleanup tolerate reader.cancel() failures instead of leaking raw errors.

Make fetch read-session cleanup tolerate reader.cancel() failures instead of leaking raw errors.

Source: llm_adapter@2026-06-03

Confidence: high

Bugfix Medium

Defensively retry if a transport read stream throws directly.

Defensively retry if a transport read stream throws directly.

Source: llm_adapter@2026-06-03

Confidence: high

Bugfix Medium

Increase fetch SSE inactivity watchdog from 20s to 25s.

Increase fetch SSE inactivity watchdog from 20s to 25s.

Source: llm_adapter@2026-06-03

Confidence: high

Bugfix Medium

Remove misleading stale-timeout debug log and add additional context to other logs.

Remove misleading stale-timeout debug log and add additional context to other logs.

Source: llm_adapter@2026-06-03

Confidence: high

Bugfix Medium

metrics `basin()`/`stream()` no longer send path params in the query string.

metrics `basin()`/`stream()` no longer send path params in the query string.

Source: llm_adapter@2026-06-03

Confidence: high

Bugfix Medium

`S2Stream.read()` honors count/bytes budget when filtering command records.

`S2Stream.read()` honors count/bytes budget when filtering command records.

Source: llm_adapter@2026-06-03

Confidence: high

Full changelog

Patch Changes

  • c543af5: fix: abort during an in-flight append no longer corrupts capacity accounting (#203)

  • df2daab: - Treat browser TypeError("network error") as retryable SDK network error.

    • Make fetch read-session cleanup tolerate reader.cancel() failures instead of leaking raw errors.
    • Defensively retry if a transport read stream throws directly.
    • Increase fetch SSE inactivity watchdog from 20s to 25s.
    • Remove misleading stale-timeout debug log & add some additional context to other logs
    • Add regression tests and patch changeset.
  • 1adac12: fix: metrics basin()/stream() no longer send path params in the query string (#235)

    Both methods spread ...args into the request query, so basin (and stream) were
    serialized into the URL query string in addition to the path. They now pass path and
    query explicitly — only { basin } / { basin, stream } in the path and only
    set/start/end/interval in the query — matching the OpenAPI spec and the Go and Python SDKs.

  • 0acd383: fix: S2Stream.read() no longer ignores the count/bytes budget when filtering command records (#231)

    When called with ignoreCommandRecords: true, the unary read() previously looped and
    re-issued a full read request (with the original count/bytes) for every command-only
    batch, amplifying a single count: 1 request into many requests. It now performs exactly
    one request and filters command records out of that single batch client-side, matching the
    Rust, Go, and Python SDKs.

    The returned batch may be empty when every record in it was a command record. Use
    readSession() to transparently keep reading until data records are found — the streaming
    session already tracks the remaining budget correctly across reconnects.

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About s2-streamstore/s2-sdk-typescript

Official MCP server for the S2.dev serverless stream platform.

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Earlier breaking changes

Beta — feedback welcome: [email protected]