feat(cursor): Add cursor Provider
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decolua
30
open-sse/translator/response/cursor-to-openai.js
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30
open-sse/translator/response/cursor-to-openai.js
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/**
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* Cursor to OpenAI Response Translator
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* CursorExecutor already emits OpenAI format - this is a passthrough
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*/
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import { register } from "../index.js";
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import { FORMATS } from "../formats.js";
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/**
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* Convert Cursor response to OpenAI format
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* Since CursorExecutor.transformProtobufToSSE/JSON already emits OpenAI chunks,
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* this is a passthrough translator (similar to Kiro pattern)
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*/
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export function convertCursorToOpenAI(chunk, state) {
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if (!chunk) return null;
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// If chunk is already in OpenAI format (from executor transform), return as-is
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if (chunk.object === "chat.completion.chunk" && chunk.choices) {
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return chunk;
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}
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// If chunk is a completion object (non-streaming), return as-is
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if (chunk.object === "chat.completion" && chunk.choices) {
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return chunk;
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}
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// Fallback: return chunk as-is (should not reach here)
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return chunk;
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}
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register(FORMATS.CURSOR, FORMATS.OPENAI, null, convertCursorToOpenAI);
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@@ -1,205 +0,0 @@
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import { register } from "../index.js";
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import { FORMATS } from "../formats.js";
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// Prefix for Claude OAuth tool names (must match request translator)
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const CLAUDE_OAUTH_TOOL_PREFIX = "proxy_";
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// Helper: stop thinking block if started
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function stopThinkingBlock(state, results) {
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if (!state.thinkingBlockStarted) return;
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results.push({
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type: "content_block_stop",
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index: state.thinkingBlockIndex
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});
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state.thinkingBlockStarted = false;
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}
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// Helper: stop text block if started
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function stopTextBlock(state, results) {
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if (!state.textBlockStarted || state.textBlockClosed) return;
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state.textBlockClosed = true;
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results.push({
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type: "content_block_stop",
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index: state.textBlockIndex
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});
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state.textBlockStarted = false;
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}
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// Convert OpenAI stream chunk to Claude format
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function openaiToClaudeResponse(chunk, state) {
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if (!chunk || !chunk.choices?.[0]) return null;
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const results = [];
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const choice = chunk.choices[0];
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const delta = choice.delta;
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// First chunk - ALWAYS send message_start first
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if (!state.messageStartSent) {
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state.messageStartSent = true;
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state.messageId = chunk.id?.replace("chatcmpl-", "") || `msg_${Date.now()}`;
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if (!state.messageId || state.messageId === "chat" || state.messageId.length < 8) {
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state.messageId = chunk.extend_fields?.requestId ||
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chunk.extend_fields?.traceId ||
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`msg_${Date.now()}`;
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}
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state.model = chunk.model || "unknown";
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state.nextBlockIndex = 0;
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results.push({
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type: "message_start",
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message: {
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id: state.messageId,
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type: "message",
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role: "assistant",
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model: state.model,
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content: [],
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stop_reason: null,
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stop_sequence: null,
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usage: { input_tokens: 0, output_tokens: 0 }
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}
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});
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}
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// Handle reasoning_content (thinking) - GLM, DeepSeek, etc.
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const reasoningContent = delta?.reasoning_content || delta?.reasoning;
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if (reasoningContent) {
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stopTextBlock(state, results);
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if (!state.thinkingBlockStarted) {
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state.thinkingBlockIndex = state.nextBlockIndex++;
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state.thinkingBlockStarted = true;
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results.push({
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type: "content_block_start",
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index: state.thinkingBlockIndex,
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content_block: { type: "thinking", thinking: "" }
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});
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}
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results.push({
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type: "content_block_delta",
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index: state.thinkingBlockIndex,
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delta: { type: "thinking_delta", thinking: reasoningContent }
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});
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}
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// Handle regular content
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if (delta?.content) {
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stopThinkingBlock(state, results);
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if (!state.textBlockStarted) {
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state.textBlockIndex = state.nextBlockIndex++;
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state.textBlockStarted = true;
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state.textBlockClosed = false;
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results.push({
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type: "content_block_start",
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index: state.textBlockIndex,
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content_block: { type: "text", text: "" }
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});
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}
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results.push({
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type: "content_block_delta",
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index: state.textBlockIndex,
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delta: { type: "text_delta", text: delta.content }
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});
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}
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// Tool calls - accumulate arguments instead of emitting immediately
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if (delta?.tool_calls) {
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for (const tc of delta.tool_calls) {
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const idx = tc.index ?? 0;
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if (tc.id) {
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stopThinkingBlock(state, results);
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stopTextBlock(state, results);
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const toolBlockIndex = state.nextBlockIndex++;
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// Strip prefix from tool name for response
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let toolName = tc.function?.name || "";
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if (toolName.startsWith(CLAUDE_OAUTH_TOOL_PREFIX)) {
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toolName = toolName.slice(CLAUDE_OAUTH_TOOL_PREFIX.length);
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}
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// Initialize accumulator for this tool
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state.toolCalls.set(idx, {
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id: tc.id,
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name: toolName,
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blockIndex: toolBlockIndex,
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arguments: "", // Accumulate arguments here
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startEmitted: false // Track if content_block_start sent
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});
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}
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// Accumulate arguments instead of emitting immediately
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if (tc.function?.arguments) {
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const toolInfo = state.toolCalls.get(idx);
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if (toolInfo) {
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toolInfo.arguments += tc.function.arguments;
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}
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}
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}
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}
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// Finish - emit all accumulated tools in correct order
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if (choice.finish_reason) {
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stopThinkingBlock(state, results);
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stopTextBlock(state, results);
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// STEP 1: Emit all content_block_start for tools (like CLIProxyAPIPlus)
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const sortedTools = Array.from(state.toolCalls.entries()).sort((a, b) => a[0] - b[0]);
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for (const [, toolInfo] of sortedTools) {
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if (!toolInfo.startEmitted) {
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results.push({
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type: "content_block_start",
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index: toolInfo.blockIndex,
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content_block: {
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type: "tool_use",
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id: toolInfo.id,
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name: toolInfo.name,
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input: {}
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}
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});
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toolInfo.startEmitted = true;
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}
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}
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// STEP 2: Emit input_json_delta + content_block_stop for each tool
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for (const [, toolInfo] of sortedTools) {
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if (toolInfo.arguments) {
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results.push({
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type: "content_block_delta",
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index: toolInfo.blockIndex,
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delta: { type: "input_json_delta", partial_json: toolInfo.arguments }
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});
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}
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results.push({
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type: "content_block_stop",
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index: toolInfo.blockIndex
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});
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}
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results.push({
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type: "message_delta",
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delta: { stop_reason: convertFinishReason(choice.finish_reason) },
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usage: { output_tokens: 0 }
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});
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results.push({ type: "message_stop" });
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}
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return results.length > 0 ? results : null;
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}
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// Convert OpenAI finish_reason to Claude stop_reason
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function convertFinishReason(reason) {
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switch (reason) {
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case "stop": return "end_turn";
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case "length": return "max_tokens";
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case "tool_calls": return "tool_use";
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default: return "end_turn";
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}
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}
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// Register
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register(FORMATS.OPENAI, FORMATS.CLAUDE, null, openaiToClaudeResponse);
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