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fix(ai): own Anthropic SSE parsing to avoid SDK JSON.parse hard-failures

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Bypass the Anthropic SDK streaming parser entirely. Use
client.messages.create().asResponse() and decode the SSE stream
ourselves with defensive JSON parsing that repairs invalid escape
sequences and control characters inside string literals.

- Switch from SDK .stream() to .asResponse() + pi-owned SSE decoder
- Add repairJson() / parseJsonWithRepair() to json-parse.ts
- Add anthropic-sse-parsing.test.ts regression for malformed tool deltas
- Update github-copilot-anthropic.test.ts mock to match new call path
- Update deprecated claude-3-5-haiku-20241022 refs to claude-haiku-4-5
- Remove stale non-reasoning model test

fixes #3175
This commit is contained in:
Mario Zechner
2026-04-21 23:00:56 +02:00
parent a0a16c7762
commit 4b926a30a2
12 changed files with 430 additions and 124 deletions
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4
packages/ai/test/unicode-surrogate.test.ts
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@@ -352,7 +352,7 @@ describe("AI Providers Unicode Surrogate Pair Tests", () => {
});
describe.skipIf(!process.env.ANTHROPIC_API_KEY)("Anthropic Provider Unicode Handling", () => {
const llm = getModel("anthropic", "claude-3-5-haiku-20241022");
const llm = getModel("anthropic", "claude-haiku-4-5");
it("should handle emoji in tool results", { retry: 3, timeout: 30000 }, async () => {
await testEmojiInToolResults(llm);
@@ -372,7 +372,7 @@ describe("AI Providers Unicode Surrogate Pair Tests", () => {
// =========================================================================
describe("Anthropic OAuth Provider Unicode Handling", () => {
const llm = getModel("anthropic", "claude-3-5-haiku-20241022");
const llm = getModel("anthropic", "claude-haiku-4-5");
it.skipIf(!anthropicOAuthToken)("should handle emoji in tool results", { retry: 3, timeout: 30000 }, async () => {
await testEmojiInToolResults(llm, { apiKey: anthropicOAuthToken });