fix(deepagents): handle non-string content blocks in tool result sizechecking

[Christian Bromann (christian-bromann)]

Fixes #277

The tool result eviction logic in processToolMessage only checked content when it was a plain string (typeof msg.content === "string"), which meant array-based content blocks (e.g. [{ type: "text", text: "..." }]) bypassed the size limit entirely and were sent back to the agent untruncated.

The fix uses the existing BaseMessage.text getter from @langchain/core, which already handles both content formats:

• String content: returned as-is
• Array content blocks: joins all blocks with type === "text" into a single string

This avoids introducing any new utility functions — the upstream API already solves this.

Changes

• Updated processToolMessage() in fs.ts to use msg.text instead of directly checking msg.content
• Added 2 unit tests covering array-based content block eviction (large and small)

[changeset-bot]

🦋 Changeset detected

Latest commit: 80fdaf0

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
deepagents	Patch
deepagents-acp	Patch

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