fix(instrumentation-openai): use @ts-ignore for OpenAI v4/v5 compatibility

- OpenAI v5 uses union types for ChatCompletionMessageToolCall
- OpenAI v4 has direct function property access
- TAV (Test All Versions) ensures compatibility across v4.19.0 through v5.20.0

Author: overbalance

packages/instrumentation-openai/src/instrumentation.ts

@@ -35,6 +35,7 @@ import type {
   ChatCompletionChunk,
   Completions as ChatCompletions,
 } from 'openai/resources/chat/completions';
+// @ts-ignore openai/core not exported in v5, but needed for v4 compatibility
 import type { APIPromise } from 'openai/core';
 import type {
   CreateEmbeddingResponse,
@@ -227,6 +228,7 @@ export class OpenAIInstrumentation extends InstrumentationBase<OpenAIInstrumenta
 
         // Non-streaming.
         apiPromise
+          // @ts-ignore result type inference fails across OpenAI versions
           .then(result => {
             self._onChatCompletionsCreateResult(
               span,
@@ -372,7 +374,9 @@ export class OpenAIInstrumentation extends InstrumentationBase<OpenAIInstrumenta
                 id: tc.id,
                 type: tc.type,
                 function: {
+                  // @ts-ignore function property doesn't exist on ChatCompletionMessageCustomToolCall in v5
                   name: tc.function.name,
+                  // @ts-ignore function property doesn't exist on ChatCompletionMessageCustomToolCall in v5
                   arguments: tc.function.arguments,
                 },
               };
@@ -382,6 +386,7 @@ export class OpenAIInstrumentation extends InstrumentationBase<OpenAIInstrumenta
               return {
                 id: tc.id,
                 type: tc.type,
+                // @ts-ignore function property doesn't exist on ChatCompletionMessageCustomToolCall in v5
                 function: { name: tc.function.name },
               };
             });
@@ -492,6 +497,7 @@ export class OpenAIInstrumentation extends InstrumentationBase<OpenAIInstrumenta
           });
         } else if (toolCalls.length > 0) {
           // A tool call chunk with more of the `function.arguments`.
+          // @ts-ignore function property doesn't exist on ChatCompletionMessageCustomToolCall in v5
           toolCalls[toolCalls.length - 1].function.arguments +=
             toolCallPart.function?.arguments ?? '';
         }
@@ -551,8 +557,10 @@ export class OpenAIInstrumentation extends InstrumentationBase<OpenAIInstrumenta
         message.content = choice.content;
       }
       if (choice.toolCalls && choice.toolCalls.length > 0) {
+        // @ts-ignore ChatCompletionMessageToolCall union type incompatible with GenAIToolCall in v5
         message.tool_calls = choice.toolCalls;
         if (!config.captureMessageContent) {
+          // @ts-ignore message.tool_calls possibly undefined
           message.tool_calls.forEach(tc => {
             delete tc.function?.arguments;
           });
@@ -621,6 +629,7 @@ export class OpenAIInstrumentation extends InstrumentationBase<OpenAIInstrumenta
             message.content = choice.message.content;
           }
           if (choice.message.tool_calls) {
+            // @ts-ignore ChatCompletionMessageToolCall union type incompatible with GenAIToolCall in v5
             message.tool_calls = choice.message.tool_calls;
           }
         } else {
@@ -629,6 +638,7 @@ export class OpenAIInstrumentation extends InstrumentationBase<OpenAIInstrumenta
               return {
                 id: tc.id,
                 type: tc.type,
+                // @ts-ignore function property doesn't exist on ChatCompletionMessageCustomToolCall in v5
                 function: { name: tc.function.name },
               };
             });