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fix(core): Truncate content array format in Vercel #19911

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Merged
nicohrubec merged 7 commits into from
Mar 24, 2026
Merged

fix(core): Truncate content array format in Vercel #19911

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@nicohrubec
nicohrubec committed Mar 20, 2026
commit e5d1ae76b511df423fe57f712b676635981a0a97
17 changes: 11 additions & 6 deletions packages/core/src/tracing/ai/messageTruncation.ts
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Expand Up @@ -14,15 +14,20 @@ type ContentMessage = {
content: string;
};

/**
* One block inside OpenAI / Anthropic `content: [...]` arrays (text, image_url, etc.).
*/
type ContentArrayBlock = {
[key: string]: unknown;
type: string;
};

/**
* Message format used by OpenAI and Anthropic APIs for media.
*/
type ContentArrayMessage = {
[key: string]: unknown;
content: {
[key: string]: unknown;
type: string;
}[];
content: ContentArrayBlock[];
};

/**
Expand All @@ -48,9 +53,9 @@ type MediaPart = {
};

/**
* Union of all item types that can appear in array-based messages.
* One element of an array-based message: OpenAI/Anthropic `content[]` or Google `parts`.
*/
type ArrayMessageItem = TextPart | MediaPart | ContentArrayMessage['content'][number];
type ArrayMessageItem = TextPart | MediaPart | ContentArrayBlock;

/**
* Calculate the UTF-8 byte length of a string.
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