Function buildActivityTimeline

cli/src/utils/implementor-helpers.ts:587–622

(
  blocks: ContentBlock[] | undefined,
)

 * Includes both executed tools (str_replace, write_file) and proposed tools.
 */
export function buildActivityTimeline(
  blocks: ContentBlock[] | undefined,
): TimelineItem[] {
  if (!blocks || blocks.length === 0) return []

  const timeline: TimelineItem[] = []

  for (const block of blocks) {
    if (block.type === 'text' && block.textType !== 'reasoning') {
      const content = block.content.trim()
      if (content) {
        timeline.push({ type: 'commentary', content })
      }
    } else if (
      block.type === 'tool' &&
      ALL_EDIT_TOOL_NAMES.includes(
        block.toolName as (typeof ALL_EDIT_TOOL_NAMES)[number],
      )
    ) {
      if (isFailedEditToolBlock(block)) continue

      const filePath = extractFilePath(block)
      const diff = extractDiff(block)
      const isCreate = isCreateFile(block)

      timeline.push({
        type: 'edit',
        content: filePath || 'unknown file',
        diff: diff || undefined,
        isCreate,
      })
    }
  }

  return timeline
}

/**
 * Truncate text to fit within maxWidth, adding ellipsis if needed.