Function contentSize

src/utils/toolResultStorage.ts:518–529

(
  content: NonNullable<ToolResultBlockParam['content']>,
)

}

function contentSize(
  content: NonNullable<ToolResultBlockParam['content']>,
): number {
  if (typeof content === 'string') return content.length
  // Sum text-block lengths directly. Slightly under-counts vs serialized
  // (no JSON framing), but the budget is a rough token heuristic anyway.
  // Avoids allocating a content-sized string every enforcement pass.
  return content.reduce(
    (sum, b) => sum + (b.type === 'text' ? b.text.length : 0),
    0,
  )
}

/**
 * Walk messages and build tool_use_id → tool_name from assistant tool_use