Strict OpenAI-compatible validators reject unknown assistant-message
fields: Groq 400 ("property 'reasoning_content' is unsupported"),
Mistral 422 ("extra_forbidden"), Cerebras 400 ("wrong_api_format").
Clients driving reasoning models (Hermes Agent, and anything following
the DeepSeek/Kimi convention) echo the previous turn's reasoning_content
on every assistant message, so from the second turn on every request to
these providers fails and a fallback combo silently skips them.
Add a dropMessageFields rule to paramSupport.js that strips
reasoning_content / reasoning / reasoning_details from assistant turns
for groq, mistral, and cerebras.
100 lines
3.1 KiB
JavaScript
100 lines
3.1 KiB
JavaScript
import { describe, it, expect } from "vitest";
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import { stripUnsupportedParams } from "../../open-sse/translator/concerns/paramSupport.js";
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describe("stripUnsupportedParams", () => {
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it("flattens Cloudflare AI OpenAI content-part arrays", () => {
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const body = {
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messages: [
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{
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role: "user",
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content: [
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{ type: "text", text: "hello " },
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{ type: "image_url", image_url: { url: "data:image/png;base64,xx" } },
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{ type: "text", text: "world" },
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],
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},
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],
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};
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expect(() => stripUnsupportedParams("cloudflare-ai", "@cf/meta/llama-3.1-8b-instruct", body)).not.toThrow();
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expect(body.messages[0].content).toBe("hello world");
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});
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it("still drops unsupported GitHub model params", () => {
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const body = { temperature: 0.7, top_p: 1 };
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stripUnsupportedParams("github", "gpt-5.4", body);
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expect(body).toEqual({ top_p: 1 });
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});
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it("clamps VolcEngine Ark GLM max token fields to the model output ceiling", () => {
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const body = {
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max_tokens: 131072,
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max_completion_tokens: 131072,
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max_output_tokens: 131072,
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};
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stripUnsupportedParams("volcengine-ark", "GLM-5.2", body);
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expect(body).toEqual({
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max_tokens: 128000,
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max_completion_tokens: 128000,
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max_output_tokens: 128000,
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});
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});
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it("keeps VolcEngine Ark GLM max tokens when already under the ceiling", () => {
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const body = { max_tokens: 64000 };
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stripUnsupportedParams("volcengine-ark", "GLM-5.2", body);
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expect(body.max_tokens).toBe(64000);
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});
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it("drops replayed reasoning fields from assistant messages for strict providers", () => {
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const makeBody = () => ({
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messages: [
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{ role: "user", content: "hi" },
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{
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role: "assistant",
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content: "hello",
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reasoning_content: "thinking...",
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reasoning: "thinking...",
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reasoning_details: [{ text: "thinking..." }],
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tool_calls: [{ id: "c1", type: "function", function: { name: "f", arguments: "{}" } }],
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},
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{ role: "user", content: "again", reasoning_content: "user-side field stays" },
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],
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});
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for (const [provider, model] of [
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["groq", "openai/gpt-oss-120b"],
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["mistral", "codestral-latest"],
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["cerebras", "gpt-oss-120b"],
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]) {
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const body = makeBody();
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stripUnsupportedParams(provider, model, body);
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expect(body.messages[1]).toEqual({
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role: "assistant",
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content: "hello",
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tool_calls: [{ id: "c1", type: "function", function: { name: "f", arguments: "{}" } }],
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});
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// only assistant turns are touched
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expect(body.messages[2].reasoning_content).toBe("user-side field stays");
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}
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});
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it("leaves reasoning fields alone for providers that accept or require them", () => {
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const body = {
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messages: [{ role: "assistant", content: "hello", reasoning_content: "thinking..." }],
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};
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stripUnsupportedParams("deepseek", "deepseek-reasoner", body);
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stripUnsupportedParams("openrouter", "nvidia/nemotron-3-ultra-550b-a55b:free", body);
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expect(body.messages[0].reasoning_content).toBe("thinking...");
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});
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});
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