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fix(ai): correct streaming event documentation and API methods

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Mario Zechner 2025-09-18 11:17:33 +02:00
parent c9d735bbbd
commit b6af05bbf6
1 changed files with 35 additions and 4 deletions
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39
packages/ai/README.md
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@ -71,8 +71,19 @@ for await (const event of s) {
case 'thinking_end':
console.log('[Thinking complete]');
break;
case 'toolCall':
case 'toolcall_start':
console.log(`\n[Tool call started: index ${event.contentIndex}]`);
break;
case 'toolcall_delta':
// Partial tool arguments are being streamed
const partialCall = event.partial.content[event.contentIndex];
if (partialCall.type === 'toolCall') {
console.log(`[Streaming args for ${partialCall.name}]`);
}
break;
case 'toolcall_end':
console.log(`\nTool called: ${event.toolCall.name}`);
console.log(`Arguments: ${JSON.stringify(event.toolCall.arguments)}`);
break;
case 'done':
console.log(`\nFinished: ${event.reason}`);
@ -84,9 +95,10 @@ for await (const event of s) {
}
// Get the final message after streaming, add it to the context
const finalMessage = await s.finalMessage();
const finalMessage = await s.result();
context.messages.push(finalMessage);
// Handle tool calls if any
// Handle tool calls if any
const toolCalls = finalMessage.content.filter(b => b.type === 'toolCall');
for (const call of toolCalls) {
@ -237,7 +249,26 @@ for await (const event of s) {
- Nested objects may be partially populated
- At minimum, `arguments` will be an empty object `{}`, never `undefined`
- Full validation only occurs at `toolcall_end` when arguments are complete
- The Google provider does not support function call streaming. Instead, you will receive a single `toolcall_delta` even with the full arguments.
- The Google provider does not support function call streaming. Instead, you will receive a single `toolcall_delta` event with the full arguments.
### Complete Event Reference
All streaming events emitted during assistant message generation:
| Event Type | Description | Key Properties |
|------------|-------------|----------------|
| `start` | Stream begins | `partial`: Initial assistant message structure |
| `text_start` | Text block starts | `contentIndex`: Position in content array |
| `text_delta` | Text chunk received | `delta`: New text, `contentIndex`: Position |
| `text_end` | Text block complete | `content`: Full text, `contentIndex`: Position |
| `thinking_start` | Thinking block starts | `contentIndex`: Position in content array |
| `thinking_delta` | Thinking chunk received | `delta`: New text, `contentIndex`: Position |
| `thinking_end` | Thinking block complete | `content`: Full thinking, `contentIndex`: Position |
| `toolcall_start` | Tool call begins | `contentIndex`: Position in content array |
| `toolcall_delta` | Tool arguments streaming | `delta`: JSON chunk, `partial.content[contentIndex].arguments`: Partial parsed args |
| `toolcall_end` | Tool call complete | `toolCall`: Complete validated tool call with `id`, `name`, `arguments` |
| `done` | Stream complete | `reason`: Stop reason, `message`: Final assistant message |
| `error` | Error occurred | `error`: Error message, `partial`: Partial message before error |
## Image Input
@ -403,7 +434,7 @@ for await (const event of s) {
}
// Get results (may be partial if aborted)
const response = await s.finalMessage();
const response = await s.result();
if (response.stopReason === 'error') {
console.log('Error:', response.error);
console.log('Partial content received:', response.content);