Function isCollapsibleToolUse

src/utils/collapseReadSearch.ts:406–425

* Type predicate: Check if a message is a collapsible tool use.

(
  msg: RenderableMessage,
  tools: Tools,
)

 * Type predicate: Check if a message is a collapsible tool use.
 */
function isCollapsibleToolUse(
  msg: RenderableMessage,
  tools: Tools,
): msg is CollapsibleMessage {
  if (msg.type === 'assistant') {
    const content = msg.message.content[0]
    return (
      content?.type === 'tool_use' &&
      isToolSearchOrRead(content.name, content.input, tools)
    )
  }
  if (msg.type === 'grouped_tool_use') {
    const firstContent = msg.messages[0]?.message.content[0]
    return (
      firstContent?.type === 'tool_use' &&
      isToolSearchOrRead(msg.toolName, firstContent.input, tools)
    )
  }
  return false
}

/**
 * Type predicate: Check if a message is a tool result for collapsible tools.