Files
2026-07-13 13:39:12 +08:00

1063 lines
34 KiB
TypeScript

import test from "node:test";
import assert from "node:assert/strict";
const {
extractThinkingFromContent,
sanitizeOpenAIResponse,
sanitizeResponsesApiResponse,
sanitizeStreamingChunk,
shouldParseTextualReasoningTags,
} = await import("../../open-sse/handlers/responseSanitizer.ts");
test("extractThinkingFromContent separates think blocks from visible content", () => {
const parsed = extractThinkingFromContent(
"Before<think>reasoning 1</think>middle<thinking>reasoning 2</thinking>after"
);
assert.equal(parsed.content, "Beforemiddleafter");
assert.equal(parsed.thinking, "reasoning 1\n\nreasoning 2");
});
// #3821-review LEDGER-7 — the unclosed-reasoning-tag heuristic (#3605) reclassifies a
// dangling `<thought`-style tail as reasoning. Pin that a REAL visible prefix before such
// a tail is preserved as content (only a whitespace/§marker§ prefix collapses to ""), and
// that a non-reasoning tag like `<thoughtful>` is NOT captured.
test("extractThinkingFromContent preserves a real prefix before a dangling reasoning tag", () => {
const parsed = extractThinkingFromContent("Here is the answer. <thought\nleftover reasoning");
assert.equal(parsed.content, "Here is the answer.");
assert.equal(parsed.thinking, "leftover reasoning");
});
test("extractThinkingFromContent: §marker§-only prefix collapses to empty content", () => {
const parsed = extractThinkingFromContent("§54§ <thought\ninternal planning");
assert.equal(parsed.content, "");
assert.equal(parsed.thinking, "internal planning");
});
test("extractThinkingFromContent does NOT treat <thoughtful> as a reasoning tag", () => {
const parsed = extractThinkingFromContent("See the <thoughtful> approach here");
assert.equal(parsed.content, "See the <thoughtful> approach here");
assert.equal(parsed.thinking, null);
});
test("extractThinkingFromContent handles closing-only reasoning before content tag", () => {
const parsed = extractThinkingFromContent("planning\n</thinking>\n<content>visible</content>");
assert.equal(parsed.content, "<content>visible</content>");
assert.equal(parsed.thinking, "planning");
});
test("sanitizeOpenAIResponse strips non-standard fields and preserves required top-level fields", () => {
const sanitized = sanitizeOpenAIResponse({
id: "chatcmpl_existing",
object: "chat.completion",
created: 123,
model: "gpt-4.1",
choices: [],
x_groq: { ignored: true },
service_tier: "premium",
});
assert.deepEqual(sanitized, {
id: "chatcmpl_existing",
object: "chat.completion",
created: 123,
model: "gpt-4.1",
choices: [],
});
});
test("sanitizeOpenAIResponse preserves prompt-format thinking tags by default", () => {
const sanitized = sanitizeOpenAIResponse({
id: "chatcmpl_test",
model: "gpt-4.1",
choices: [
{
index: 2,
finish_reason: "tool_calls",
message: {
role: "assistant",
content: "Hello\n\n\n<think>visible protocol</think>\n\nworld",
tool_calls: [{ id: "call_1" }],
function_call: { name: "legacy" },
},
},
],
});
assert.equal((sanitized as any).choices[0].index, 2);
assert.equal((sanitized as any).choices[0].finish_reason, "tool_calls");
(assert as any).equal(
(sanitized as any).choices[0].message.content,
"Hello\n\n<think>visible protocol</think>\n\nworld"
);
assert.equal((sanitized as any).choices[0].message.reasoning_content, undefined);
(assert as any).deepEqual((sanitized as any).choices[0].message.tool_calls, [{ id: "call_1" }]);
assert.deepEqual((sanitized as any).choices[0].message.function_call, { name: "legacy" });
});
test("sanitizeOpenAIResponse extracts textual reasoning only when explicitly enabled", () => {
const sanitized = sanitizeOpenAIResponse(
{
model: "deepseek-r1",
choices: [
{
message: {
role: "assistant",
content: "Hello\n\n\n<think>internal chain</think>\n\nworld",
},
},
],
},
{ parseTextualReasoningTags: true }
);
assert.equal((sanitized as any).choices[0].message.content, "Hello\n\nworld");
assert.equal((sanitized as any).choices[0].message.reasoning_content, "internal chain");
});
test("sanitizeOpenAIResponse extracts unclosed reasoning wrappers only when enabled", () => {
const sanitized = sanitizeOpenAIResponse(
{
model: "deepseek-r1",
choices: [
{
message: {
role: "assistant",
content: "§54§ <thought\ninternal planning\n",
},
},
],
},
{ parseTextualReasoningTags: true }
);
assert.equal(((sanitized as any).choices[0].message as any).content, "");
assert.equal((sanitized as any).choices[0].message.reasoning_content, "internal planning");
});
test("sanitizeOpenAIResponse preserves native reasoning_content without stripping content tags", () => {
const sanitized = sanitizeOpenAIResponse(
{
model: "gpt-4.1",
choices: [
{
message: {
role: "assistant",
content: "<think>visible protocol</think>",
reasoning_content: "provider reasoning",
},
},
],
},
{ parseTextualReasoningTags: true }
);
assert.equal(
((sanitized as any).choices[0].message as any).content,
"<think>visible protocol</think>"
);
assert.equal((sanitized as any).choices[0].message.reasoning_content, "provider reasoning");
});
test("sanitizeOpenAIResponse maps Claude-style usage fields and strips extras", () => {
const sanitized = sanitizeOpenAIResponse({
model: "claude-3-7-sonnet",
choices: [],
usage: {
input_tokens: 11,
output_tokens: 7,
service_tier: "ignored",
usage_breakdown: { ignored: true },
},
});
assert.deepEqual((sanitized as any).usage, {
prompt_tokens: 11,
completion_tokens: 7,
total_tokens: 18,
});
});
test("sanitizeOpenAIResponse preserves reasoning_details-derived reasoning_content with visible text", () => {
const sanitized = sanitizeOpenAIResponse({
model: "openrouter/model",
choices: [
{
message: {
role: "assistant",
content: "Visible",
reasoning_details: [
{ type: "reasoning.text", text: "first " },
{ type: "thinking", content: "second" },
],
},
},
],
});
assert.equal((sanitized as any).choices[0].message.content, "Visible");
assert.equal((sanitized as any).choices[0].message.reasoning_content, "first second");
assert.deepEqual((sanitized as any).choices[0].message.reasoning_details, [
{ type: "reasoning.text", text: "first " },
{ type: "thinking", content: "second" },
]);
});
test("sanitizeOpenAIResponse preserves DeepSeek V4 reasoning_content with visible text", () => {
const sanitized = sanitizeOpenAIResponse({
model: "deepseek-v4-pro",
choices: [
{
message: {
role: "assistant",
content: "Visible answer",
reasoning_content: "DeepSeek reasoning",
},
},
],
});
assert.equal((sanitized as any).choices[0].message.content, "Visible answer");
assert.equal((sanitized as any).choices[0].message.reasoning_content, "DeepSeek reasoning");
});
test("sanitizeOpenAIResponse preserves DeepSeek V4 reasoning_details with visible text", () => {
const sanitized = sanitizeOpenAIResponse({
model: "deepseek-v4/reasoner",
choices: [
{
message: {
role: "assistant",
content: "Visible answer",
reasoning_details: [
{ type: "reasoning.text", text: "first " },
{ type: "thinking", content: "second" },
],
},
},
],
});
assert.equal((sanitized as any).choices[0].message.reasoning_content, "first second");
});
test("sanitizeOpenAIResponse preserves non-DeepSeek reasoning_content with visible text", () => {
const sanitized = sanitizeOpenAIResponse({
model: "o3-mini",
choices: [
{
message: {
role: "assistant",
content: "Visible answer",
reasoning_content: "OpenAI reasoning",
},
},
],
});
assert.equal((sanitized as any).choices[0].message.content, "Visible answer");
assert.equal((sanitized as any).choices[0].message.reasoning_content, "OpenAI reasoning");
});
test("sanitizeOpenAIResponse preserves OpenRouter native reasoning and signatures", () => {
const sanitized = sanitizeOpenAIResponse({
model: "moonshotai/kimi-k2.6",
choices: [
{
message: {
role: "assistant",
content: "<thinking>tag-derived</thinking><content>Visible answer</content>",
reasoning: "provider native reasoning",
reasoning_details: [{ type: "reasoning.encrypted", data: "sig" }],
},
},
],
});
assert.equal((sanitized as any).choices[0].message.reasoning_content, undefined);
assert.equal((sanitized as any).choices[0].message.reasoning, "provider native reasoning");
assert.deepEqual((sanitized as any).choices[0].message.reasoning_details, [
{ type: "reasoning.encrypted", data: "sig" },
]);
assert.equal(
(sanitized as any).choices[0].message.content,
"<thinking>tag-derived</thinking><content>Visible answer</content>"
);
});
test("sanitizeOpenAIResponse keeps reasoning_details-derived reasoning_content for reasoning-only messages", () => {
const sanitized = sanitizeOpenAIResponse({
model: "openrouter/model",
choices: [
{
message: {
role: "assistant",
content: "",
reasoning_details: [
{ type: "reasoning.text", text: "first " },
{ type: "thinking", content: "second" },
],
},
},
],
});
assert.equal((sanitized as any).choices[0].message.reasoning_content, "first second");
});
test("sanitizeResponsesApiResponse converts chat completions tool calls into Responses output items", () => {
const sanitized = sanitizeResponsesApiResponse({
id: "chatcmpl_tool",
object: "chat.completion",
created: 123,
model: "gpt-4.1",
choices: [
{
index: 0,
finish_reason: "tool_calls",
message: {
role: "assistant",
content: "",
reasoning_content: "Check web results first.",
tool_calls: [
{
id: "call_web_search",
type: "function",
function: {
name: "omniroute_web_search",
arguments: '{"query":"omniroute"}',
},
},
],
},
},
],
usage: {
prompt_tokens: 12,
completion_tokens: 5,
prompt_tokens_details: { cached_tokens: 3 },
completion_tokens_details: { reasoning_tokens: 2 },
},
});
assert.equal((sanitized as any).object, "response");
assert.equal((sanitized as any).id, "resp_chatcmpl_tool");
assert.equal((sanitized as any).output[0].type, "reasoning");
(assert as any).equal((sanitized as any).output[1].type, "function_call");
(assert as any).equal((sanitized as any).output[1].call_id, "call_web_search");
(assert as any).equal((sanitized as any).output[1].name, "omniroute_web_search");
assert.equal((sanitized as any).usage.input_tokens, 12);
assert.equal(((sanitized as any).usage as any).output_tokens, 5);
assert.equal((sanitized as any).usage.input_tokens_details.cached_tokens, 3);
assert.equal((sanitized as any).usage.output_tokens_details.reasoning_tokens, 2);
});
test("sanitizeResponsesApiResponse synthesizes an output[] message from output_text-only bodies (#4942 regression)", () => {
const sanitized = sanitizeResponsesApiResponse({
object: "response",
status: "completed",
model: "lmstudio/local",
output_text: " I prefer TypeScript. ",
}) as any;
assert.equal(sanitized.object, "response");
// output[] must be synthesized (was dropped before the fix → response flagged malformed)
assert.equal(sanitized.output.length, 1);
assert.equal(sanitized.output[0].type, "message");
assert.equal(sanitized.output[0].role, "assistant");
assert.equal(sanitized.output[0].content[0].type, "output_text");
assert.equal(sanitized.output[0].content[0].text, "I prefer TypeScript.");
// and output_text is re-derived (trimmed) from the synthesized item
assert.equal(sanitized.output_text, "I prefer TypeScript.");
});
test("sanitizeResponsesApiResponse leaves output[] empty when output_text is blank", () => {
const sanitized = sanitizeResponsesApiResponse({
object: "response",
status: "completed",
output_text: " ",
}) as any;
assert.equal(sanitized.output.length, 0);
assert.equal(sanitized.output_text, undefined);
});
test("sanitizeResponsesApiResponse preserves native Responses payloads and usage details", () => {
const sanitized = sanitizeResponsesApiResponse({
id: "resp_native",
object: "response",
created_at: 456,
model: "gpt-5.1-codex",
status: "completed",
output: [
{
id: "msg_1",
type: "message",
role: "assistant",
content: [{ type: "output_text", text: "Hello\n\n\nworld", annotations: [] }],
},
{
id: "fc_1",
type: "function_call",
call_id: "call_1",
name: "lookup",
arguments: { path: "/tmp/a" },
},
],
usage: {
input_tokens: 20,
output_tokens: 7,
prompt_tokens_details: { cached_tokens: 4 },
cache_creation_input_tokens: 1,
completion_tokens_details: { reasoning_tokens: 3 },
},
});
assert.equal((sanitized as any).object, "response");
assert.equal(((sanitized as any).output[0] as any).content[0].text, "Hello\n\nworld");
assert.equal((sanitized as any).output[1].arguments, '{"path":"/tmp/a"}');
assert.equal((sanitized as any).output_text, "Hello\n\nworld");
assert.equal((sanitized as any).usage.input_tokens, 20);
(assert as any).equal((sanitized as any).usage.output_tokens, 7);
assert.equal((sanitized as any).usage.input_tokens_details.cached_tokens, 4);
assert.equal((sanitized as any).usage.input_tokens_details.cache_creation_tokens, 1);
assert.equal((sanitized as any).usage.output_tokens_details.reasoning_tokens, 3);
});
test("sanitizeStreamingChunk keeps only safe chunk fields and preserves readable reasoning aliases", () => {
const sanitized = sanitizeStreamingChunk({
id: "chunk_1",
object: "chat.completion.chunk",
created: 456,
model: "gpt-4.1",
choices: [
{
index: 3,
delta: {
role: "assistant",
content: "Line 1\n\n\nLine 2",
reasoning: "stream reasoning",
tool_calls: [{ id: "call_1" }],
},
finish_reason: "stop",
logprobs: { mock: true },
},
],
usage: { input_tokens: 2, output_tokens: 1, secret: true },
system_fingerprint: "fp_123",
provider_debug: "drop-me",
});
assert.deepEqual(sanitized, {
id: "chunk_1",
object: "chat.completion.chunk",
created: 456,
model: "gpt-4.1",
choices: [
{
index: 3,
delta: {
role: "assistant",
content: "Line 1\n\nLine 2",
reasoning: "stream reasoning",
tool_calls: [{ id: "call_1" }],
},
finish_reason: "stop",
logprobs: { mock: true },
},
],
usage: {
prompt_tokens: 2,
completion_tokens: 1,
total_tokens: 3,
},
system_fingerprint: "fp_123",
});
});
test("sanitizeStreamingChunk converts reasoning_details arrays in deltas", () => {
const sanitized = sanitizeStreamingChunk({
choices: [
{
delta: {
reasoning_details: [{ type: "reasoning.text", text: "alpha" }, { content: "beta" }],
},
},
],
});
assert.equal((sanitized as any).choices[0].delta.reasoning_content, "alphabeta");
assert.deepEqual((sanitized as any).choices[0].delta.reasoning_details, [
{ type: "reasoning.text", text: "alpha" },
{ content: "beta" },
]);
});
test("sanitizeStreamingChunk preserves client-readable reasoning deltas", () => {
const sanitized = sanitizeStreamingChunk({
choices: [
{
delta: {
reasoning: "readable reasoning",
},
},
],
});
assert.equal((sanitized as any).choices[0].delta.reasoning, "readable reasoning");
assert.equal((sanitized as any).choices[0].delta.reasoning_content, undefined);
});
test("sanitizeStreamingChunk preserves and mirrors Copilot reasoning_text deltas", () => {
const sanitized = sanitizeStreamingChunk({
choices: [
{
delta: {
reasoning_text: "copilot reasoning",
},
},
],
});
assert.equal((sanitized as any).choices[0].delta.reasoning_text, "copilot reasoning");
assert.equal((sanitized as any).choices[0].delta.reasoning_content, "copilot reasoning");
});
test("sanitizeStreamingChunk strips commentary content from Responses completed events", () => {
const sanitized = sanitizeStreamingChunk({
type: "response.completed",
response: {
id: "resp_1",
object: "response",
model: "gpt-5.1-codex",
status: "completed",
output_text: "hiddenshown",
output: [
{
id: "msg_1",
type: "message",
role: "assistant",
content: [
{ type: "output_text", text: "hidden", phase: "commentary" },
{ type: "output_text", text: "shown", phase: "final_answer" },
],
},
],
},
});
assert.equal((sanitized as any).response.output[0].content.length, 1);
assert.equal((sanitized as any).response.output[0].content[0].text, "shown");
assert.equal((sanitized as any).response.output_text, "shown");
});
test("sanitizeStreamingChunk marks internal Responses output_item events for omission", () => {
const sanitized = sanitizeStreamingChunk({
type: "response.output_item.done",
item: {
id: "msg_internal",
type: "message",
role: "assistant",
phase: "commentary",
content: [{ type: "output_text", text: "hidden" }],
},
});
assert.equal((sanitized as any).__omniroute_omit_streaming_chunk, true);
assert.equal("item" in (sanitized as any), false);
});
test("sanitizeOpenAIResponse preserves reasoning_content when tool_calls are present", () => {
// Bug fix: Kimi and other thinking-enabled providers require reasoning_content
// on assistant messages that contain tool_calls. The sanitizer was stripping
// reasoning_content whenever visible content existed, breaking subsequent
// requests with "thinking is enabled but reasoning_content is missing".
const sanitized = sanitizeOpenAIResponse({
model: "kimi-k2.6-thinking",
choices: [
{
message: {
role: "assistant",
content: "Let me search for that.",
reasoning_content: "I need to use the web search tool to find current information.",
tool_calls: [
{
id: "call_search_1",
type: "function",
function: {
name: "web_search",
arguments: '{"query":"latest news"}',
},
},
],
},
},
],
});
const message = (sanitized as any).choices[0].message;
assert.equal(message.content, "Let me search for that.");
assert.equal(
message.reasoning_content,
"I need to use the web search tool to find current information.",
"reasoning_content must be preserved when tool_calls are present"
);
assert.equal(message.tool_calls.length, 1);
assert.equal(message.tool_calls[0].id, "call_search_1");
});
test("sanitizeOpenAIResponse preserves reasoning_content when no tool_calls exist", () => {
const sanitized = sanitizeOpenAIResponse({
model: "gpt-4.1",
choices: [
{
message: {
role: "assistant",
content: "Hello world",
reasoning_content: "Some internal reasoning",
},
},
],
});
const message = (sanitized as any).choices[0].message;
assert.equal(message.content, "Hello world");
assert.equal(message.reasoning_content, "Some internal reasoning");
});
test("sanitizeOpenAIResponse preserves reasoning_content when legacy function_call is present", () => {
const sanitized = sanitizeOpenAIResponse({
model: "kimi-k2.6-thinking",
choices: [
{
message: {
role: "assistant",
content: "Let me calculate that.",
reasoning_content: "I need to use the calculator function.",
function_call: { name: "calculate", arguments: '{"expr":"1+1"}' },
},
},
],
});
const message = (sanitized as any).choices[0].message;
assert.equal(message.content, "Let me calculate that.");
assert.equal(
message.reasoning_content,
"I need to use the calculator function.",
"reasoning_content must be preserved when legacy function_call is present"
);
assert.deepEqual(message.function_call, { name: "calculate", arguments: '{"expr":"1+1"}' });
});
test("sanitize functions return non-object inputs unchanged", () => {
assert.equal(sanitizeOpenAIResponse(null), null);
assert.equal(sanitizeStreamingChunk("raw text"), "raw text");
});
test("shouldParseTextualReasoningTags is limited to tag-native model families", () => {
assert.equal(shouldParseTextualReasoningTags("together", "deepseek-ai/DeepSeek-R1"), true);
assert.equal(shouldParseTextualReasoningTags("cloudflare-ai", "@cf/qwen/qwq-32b"), true);
assert.equal(shouldParseTextualReasoningTags("openrouter", "deepseek/deepseek-v4-pro"), false);
assert.equal(shouldParseTextualReasoningTags("antigravity", "deepseek-r1"), false);
assert.equal(shouldParseTextualReasoningTags(undefined, "antigravity/deepseek-r1"), false);
assert.equal(
shouldParseTextualReasoningTags("openai-compatible-custom", "claude-opus-4.7"),
false
);
});
test("sanitizeOpenAIResponse converts textual pseudo tool-call content into structured tool_calls", () => {
const sanitized = sanitizeOpenAIResponse({
id: "chatcmpl_textual_tool_call",
object: "chat.completion",
created: 1,
model: "MainAgent",
choices: [
{
index: 0,
finish_reason: "stop",
message: {
role: "assistant",
content:
'Проверю.\n[Tool call: terminal]\nArguments: {"command":"echo hermes_textual_toolcall_guard","timeout":10}',
},
},
],
}) as any;
const choice = sanitized.choices[0];
assert.equal(choice.finish_reason, "tool_calls");
assert.equal(choice.message.content, null);
assert.equal(choice.message.tool_calls[0].type, "function");
assert.equal(choice.message.tool_calls[0].function.name, "terminal");
assert.deepEqual(JSON.parse(choice.message.tool_calls[0].function.arguments), {
command: "echo hermes_textual_toolcall_guard",
timeout: 10,
});
assert.equal(JSON.stringify(sanitized).includes("[Tool call:"), false);
assert.equal(JSON.stringify(sanitized).includes("Arguments:"), false);
});
test("sanitizeOpenAIResponse suppresses malformed textual pseudo tool-call content", () => {
const sanitized = sanitizeOpenAIResponse({
id: "chatcmpl_malformed_textual_tool_call",
object: "chat.completion",
created: 1,
model: "MainAgent",
choices: [
{
index: 0,
finish_reason: "stop",
message: {
role: "assistant",
content: "[Tool call: terminal]\nArguments: {not json",
},
},
],
}) as any;
const choice = sanitized.choices[0];
assert.equal(choice.finish_reason, "stop");
assert.equal(choice.message.content, null);
assert.equal(choice.message.tool_calls, undefined);
assert.equal(JSON.stringify(sanitized).includes("[Tool call:"), false);
assert.equal(JSON.stringify(sanitized).includes("Arguments:"), false);
});
test("sanitizeOpenAIResponse strips leaked internal to=functions tool envelopes from assistant text", () => {
const sanitized = sanitizeOpenAIResponse({
id: "chatcmpl_internal_tool_envelope",
object: "chat.completion",
created: 1,
model: "MainAgent",
choices: [
{
index: 0,
finish_reason: "stop",
message: {
role: "assistant",
content:
'Vou verificar agora.\n\nto=functions.run_in_terminal tokenjson\n{"command":"pwd","explanation":"Teste","goal":"Teste","mode":"sync","isBackground":false,"timeout":120000}\n\nResumo final.',
},
},
],
}) as any;
const message = sanitized.choices[0].message;
assert.equal(message.content, "Vou verificar agora.\n\nResumo final.");
assert.equal(JSON.stringify(sanitized).includes("to=functions.run_in_terminal"), false);
assert.equal(JSON.stringify(sanitized).includes('"command":"pwd"'), false);
});
test("sanitizeResponsesApiResponse strips leaked multi_tool_use envelopes from Responses output_text", () => {
const sanitized = sanitizeResponsesApiResponse({
id: "resp_internal_tool_envelope",
object: "response",
created_at: 1,
model: "gpt-5.1-codex",
status: "completed",
output: [
{
id: "msg_1",
type: "message",
role: "assistant",
content: [
{
type: "output_text",
text: 'Antes.\n\nto=multi_tool_use.parallel junkjson\n{"tool_uses":[{"recipient_name":"functions.read_file","parameters":{"filePath":"/tmp/a","startLine":1,"endLine":10}}]}\n\nDepois.',
annotations: [],
},
],
},
],
}) as any;
assert.equal(sanitized.output[0].content[0].text, "Antes.\n\nDepois.");
assert.equal(sanitized.output_text, "Antes.\n\nDepois.");
assert.equal(JSON.stringify(sanitized).includes("to=multi_tool_use.parallel"), false);
assert.equal(JSON.stringify(sanitized).includes("recipient_name"), false);
});
test("sanitizeStreamingChunk strips zero-width joiners from delta content", () => {
const sanitized = sanitizeStreamingChunk({
choices: [
{
index: 0,
delta: {
content: "o\u200dpencode",
},
},
],
}) as any;
const output = JSON.stringify(sanitized);
assert.equal(sanitized.choices[0].delta.content, "opencode");
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeStreamingChunk leaves delta content without zero-width joiners unchanged", () => {
const sanitized = sanitizeStreamingChunk({
choices: [
{
index: 0,
delta: {
content: "opncode",
},
},
],
}) as any;
const output = JSON.stringify(sanitized);
assert.equal(sanitized.choices[0].delta.content, "opncode");
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeStreamingChunk strips inline zero-width joiners from sentence content", () => {
const sanitized = sanitizeStreamingChunk({
choices: [
{
index: 0,
delta: {
content: "hello o\u200dpencode world",
},
},
],
}) as any;
const output = JSON.stringify(sanitized);
assert.equal(sanitized.choices[0].delta.content, "hello opencode world");
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeStreamingChunk strips zero-width joiners from reasoning_content deltas", () => {
const sanitized = sanitizeStreamingChunk({
choices: [
{
index: 0,
delta: {
reasoning_content: "c\u200dursor plan",
},
},
],
}) as any;
const output = JSON.stringify(sanitized);
assert.equal(sanitized.choices[0].delta.reasoning_content, "cursor plan");
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeStreamingChunk strips zero-width joiners from Responses reasoning summaries", () => {
const sanitized = sanitizeStreamingChunk({
type: "response.output_item.done",
item: {
id: "rs_1",
type: "reasoning",
summary: [{ type: "summary_text", text: "a\u200dider note" }],
},
}) as any;
const output = JSON.stringify(sanitized);
assert.equal(sanitized.item.summary[0].text, "aider note");
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeStreamingChunk strips zero-width joiners from native response.output_text.delta", () => {
const sanitized = sanitizeStreamingChunk({
type: "response.output_text.delta",
delta: "o\u200dpencode",
}) as any;
const output = JSON.stringify(sanitized);
assert.equal(sanitized.delta, "opencode");
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeStreamingChunk strips zero-width joiners from native response.output_text.done", () => {
const sanitized = sanitizeStreamingChunk({
type: "response.output_text.done",
text: "c\u200dursor done",
}) as any;
const output = JSON.stringify(sanitized);
assert.equal(sanitized.text, "cursor done");
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeStreamingChunk strips zero-width joiners from response.reasoning_summary_text.delta", () => {
const sanitized = sanitizeStreamingChunk({
type: "response.reasoning_summary_text.delta",
delta: "a\u200dider",
}) as any;
const output = JSON.stringify(sanitized);
assert.equal(sanitized.delta, "aider");
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeStreamingChunk strips zero-width joiners from native response.function_call_arguments.delta", () => {
const sanitized = sanitizeStreamingChunk({
type: "response.function_call_arguments.delta",
delta: '{"command":"o\u200d',
}) as unknown as { delta: string };
const output = JSON.stringify(sanitized);
assert.equal(sanitized.delta, '{"command":"o');
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeStreamingChunk strips zero-width joiners from native response.function_call_arguments.done", () => {
const sanitized = sanitizeStreamingChunk({
type: "response.function_call_arguments.done",
arguments: '{"command":"o\u200dpencode"}',
}) as unknown as { arguments: string };
const output = JSON.stringify(sanitized);
assert.equal(sanitized.arguments, '{"command":"opencode"}');
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeStreamingChunk strips zero-width joiners from OpenAI chat tool-call argument deltas", () => {
const sanitized = sanitizeStreamingChunk({
id: "chunk_tool",
object: "chat.completion.chunk",
model: "claude-sonnet",
choices: [
{
index: 0,
delta: {
role: "assistant",
tool_calls: [
{
index: 0,
id: "call_1",
type: "function",
function: {
name: "run",
arguments: '{"command":"cd /tmp/o\u200dpencode && pwd"}',
},
},
],
},
},
],
}) as unknown as {
choices: { delta: { tool_calls: { function: { arguments: string } }[] } }[];
};
const output = JSON.stringify(sanitized);
assert.equal(
sanitized.choices[0].delta.tool_calls[0].function.arguments,
'{"command":"cd /tmp/opencode && pwd"}'
);
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeOpenAIResponse strips zero-width joiners from non-stream tool-call arguments", () => {
const sanitized = sanitizeOpenAIResponse({
id: "chatcmpl_zwj",
model: "claude-sonnet",
choices: [
{
index: 0,
finish_reason: "tool_calls",
message: {
role: "assistant",
content: "",
tool_calls: [
{
id: "call_1",
type: "function",
function: {
name: "run",
arguments: '{"command":"o\u200dpencode"}',
},
},
],
},
},
],
}) as unknown as {
choices: { message: { tool_calls: { function: { arguments: string } }[] } }[];
};
const output = JSON.stringify(sanitized);
assert.equal(
sanitized.choices[0].message.tool_calls[0].function.arguments,
'{"command":"opencode"}'
);
assert.equal(output.includes("\u200d"), false);
});
test("sanitizeResponsesApiResponse strips zero-width joiners from native function_call output item arguments", () => {
const sanitized = sanitizeResponsesApiResponse({
id: "resp_zwj",
object: "response",
model: "gpt-5.1-codex",
status: "completed",
output: [
{
id: "fc_1",
type: "function_call",
call_id: "call_1",
name: "run",
arguments: '{"command":"o\u200dpencode"}',
},
],
}) as unknown as { output: { arguments: string }[] };
const output = JSON.stringify(sanitized);
assert.equal(sanitized.output[0].arguments, '{"command":"opencode"}');
assert.equal(output.includes("\u200d"), false);
});
test("sanitizer leaves normal tool arguments byte-identical (no parse/restringify)", () => {
const rawArgs = '{ "command" : "printf \\"hello\\" && ls -ll", "path" : "/tmp/opencode" }';
const streamed = sanitizeStreamingChunk({
object: "chat.completion.chunk",
choices: [
{
index: 0,
delta: {
tool_calls: [
{
index: 0,
id: "call_1",
type: "function",
function: { name: "run", arguments: rawArgs },
},
],
},
},
],
}) as unknown as {
choices: { delta: { tool_calls: { function: { arguments: string } }[] } }[];
};
assert.equal(streamed.choices[0].delta.tool_calls[0].function.arguments === rawArgs, true);
const nonStream = sanitizeOpenAIResponse({
id: "chatcmpl_identity",
model: "claude-sonnet",
choices: [
{
index: 0,
finish_reason: "tool_calls",
message: {
role: "assistant",
content: "",
tool_calls: [
{
id: "call_1",
type: "function",
function: { name: "run", arguments: rawArgs },
},
],
},
},
],
}) as unknown as {
choices: { message: { tool_calls: { function: { arguments: string } }[] } }[];
};
assert.equal(nonStream.choices[0].message.tool_calls[0].function.arguments === rawArgs, true);
});