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fix(translator): route Gemini thinking through reasoning_effort on OpenAI-compatible wire

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This commit is contained in:
Lek Huda
2026-09-03 09:12:20 +07:00
committed by decolua
parent c24a854278
commit 1fe996db6a
2 changed files with 26 additions and 2 deletions
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8
open-sse/translator/concerns/thinkingUnified.js
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@@ -105,12 +105,16 @@ export function extractThinking(body) {
// at the call-site where intent is snapshotted before format translation.
export const captureThinking = extractThinking;
// Resolve thinking format: provider override > capability > derive(targetFormat).
const NATIVE_ONLY_FORMATS = new Set(["gemini-level", "gemini-budget", "claude-budget", "claude-adaptive", "kiro"]);
function resolveFormat(targetFormat, model, provider) {
const providerFmt = provider ? PROVIDERS[provider]?.thinkingFormat : null;
if (providerFmt) return providerFmt;
const caps = getCapabilitiesForModel(provider, model);
if (caps.thinkingFormat) return caps.thinkingFormat;
const isOpenAIWire = targetFormat === "openai" || targetFormat === "openai-responses";
if (caps.thinkingFormat && !(isOpenAIWire && NATIVE_ONLY_FORMATS.has(caps.thinkingFormat))) {
return caps.thinkingFormat;
}
return FORMAT_TO_NATIVE[targetFormat] || "openai";
}

20
tests/translator/thinking-unified.test.js
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@@ -220,6 +220,26 @@ describe("applyThinking per provider format", () => {
const out = apply("openai", "gpt-5.6-sol", { reasoning_effort: "max" }, "kiro");
expect(out.reasoning_effort).toBe("xhigh");
});
it.each([
["gemini-3.5-flash-lite"],
["gemini-3.7-flash"],
["gemini-3-pro"],
])("Gemini 3.x model %s (gemini-level) over a custom OpenAI-compatible provider → reasoning_effort, not generationConfig (regression: #3718)", (model) => {
const out = apply("openai", model, { reasoning_effort: "medium" }, "my-custom-gemini-openai");
expect(out.reasoning_effort).toBe("medium");
expect(out.generationConfig).toBeUndefined();
expect(out.thinkingConfig).toBeUndefined();
});
it("Gemini 2.5 model (gemini-budget) over a custom OpenAI-compatible provider → reasoning_effort, not generationConfig (regression: #3718)", () => {
const out = apply("openai", "gemini-2.5-flash", { reasoning_effort: "high" }, "my-custom-gemini-openai");
expect(out.reasoning_effort).toBe("high");
expect(out.generationConfig).toBeUndefined();
expect(out.thinkingConfig).toBeUndefined();
});
it("Gemini model over its native format (antigravity/gemini-cli/vertex) still gets generationConfig", () => {
const out = apply("gemini-cli", "gemini-3.5-flash-lite", { reasoning_effort: "medium" }, "gemini-cli");
expect(out.generationConfig.thinkingConfig.thinkingLevel).toBe("medium");
});
});
describe("extractReasoningText (response shapes)", () => {