oppi.li
source dump of claude code
1/**
2 * Utility for inserting a block into a content array relative to tool_result
3 * blocks. Used by the API layer to position supplementary content (e.g.,
4 * cache editing directives) correctly within user messages.
5 *
6 * Placement rules:
7 * - If tool_result blocks exist: insert after the last one
8 * - Otherwise: insert before the last block
9 * - If the inserted block would be the final element, a text continuation
10 * block is appended (some APIs require the prompt not to end with
11 * non-text content)
12 */
13
14/**
15 * Inserts a block into the content array after the last tool_result block.
16 * Mutates the array in place.
17 *
18 * @param content - The content array to modify
19 * @param block - The block to insert
20 */
21export function insertBlockAfterToolResults(
22 content: unknown[],
23 block: unknown,
24): void {
25 // Find position after the last tool_result block
26 let lastToolResultIndex = -1
27 for (let i = 0; i < content.length; i++) {
28 const item = content[i]
29 if (
30 item &&
31 typeof item === 'object' &&
32 'type' in item &&
33 (item as { type: string }).type === 'tool_result'
34 ) {
35 lastToolResultIndex = i
36 }
37 }
38
39 if (lastToolResultIndex >= 0) {
40 const insertPos = lastToolResultIndex + 1
41 content.splice(insertPos, 0, block)
42 // Append a text continuation if the inserted block is now last
43 if (insertPos === content.length - 1) {
44 content.push({ type: 'text', text: '.' })
45 }
46 } else {
47 // No tool_result blocks — insert before the last block
48 const insertIndex = Math.max(0, content.length - 1)
49 content.splice(insertIndex, 0, block)
50 }
51}