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feat!: Update langchain to v1 alpha #1187

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8afa0dd
Update langchain to v1 alpha
davidkna-sap Oct 15, 2025
a1fa73c
feat: upgrade zod to v4
davidkna-sap Oct 16, 2025
e237d91
bump to langchain v1 release
davidkna-sap Oct 20, 2025
ca5efdc
fix: use `switch` instead of `instanceof` again
davidkna-sap Oct 21, 2025
c1c74ab
format
davidkna-sap Oct 21, 2025
826f87b
re-add deprecated`additional_kwargs.tool_calls`
davidkna-sap Oct 21, 2025
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2 changes: 1 addition & 1 deletion package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,7 @@
},
"devDependencies": {
"orval": "^7.13.2",
"zod": "^3.25.76",
"zod": "^4.1.12",
"@changesets/cli": "^2.29.7",
"@jest/globals": "^30.2.0",
"@sap-ai-sdk/ai-api": "workspace:^",
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4 changes: 2 additions & 2 deletions packages/langchain/package.json
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Expand Up @@ -26,13 +26,13 @@
"lint:fix": "eslint \"**/*.ts\" --fix && prettier . --config ../../.prettierrc --ignore-path ../../.prettierignore -w --log-level error"
},
"dependencies": {
"@langchain/core": "^1.0.1",
"@sap-ai-sdk/ai-api": "workspace:^",
"@sap-ai-sdk/core": "workspace:^",
"@sap-ai-sdk/foundation-models": "workspace:^",
"@sap-ai-sdk/orchestration": "workspace:^",
"@sap-cloud-sdk/connectivity": "^4.1.2",
"@sap-cloud-sdk/util": "^4.1.2",
"uuid": "^13.0.0",
"@langchain/core": "0.3.78"
"uuid": "^13.0.0"
}
}
4 changes: 4 additions & 0 deletions packages/langchain/src/openai/__snapshots__/chat.test.ts.snap
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Expand Up @@ -30,7 +30,9 @@ exports[`Chat client streaming supports streaming responses 1`] = `
"tool_call_chunks": [],
"tool_calls": [],
"usage_metadata": {
"input_token_details": {},
"input_tokens": 14,
"output_token_details": {},
"output_tokens": 7,
"total_tokens": 21,
},
Expand Down Expand Up @@ -98,7 +100,9 @@ exports[`Chat client streaming supports streaming responses with tool calls 1`]
},
],
"usage_metadata": {
"input_token_details": {},
"input_tokens": 52,
"output_token_details": {},
"output_tokens": 18,
"total_tokens": 70,
},
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16 changes: 10 additions & 6 deletions packages/langchain/src/openai/util.ts
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Expand Up @@ -248,19 +248,23 @@ function mapSystemMessageToAzureOpenAiSystemMessage(
function mapBaseMessageToAzureOpenAiChatMessage(
message: BaseMessage
): AzureOpenAiChatCompletionRequestMessage {
switch (message.getType()) {
switch (message.type) {
case 'ai':
return mapAiMessageToAzureOpenAiAssistantMessage(message);
return mapAiMessageToAzureOpenAiAssistantMessage(message as AIMessage);
case 'human':
return mapHumanMessageToAzureOpenAiUserMessage(message);
return mapHumanMessageToAzureOpenAiUserMessage(message as HumanMessage);
case 'system':
return mapSystemMessageToAzureOpenAiSystemMessage(message);
return mapSystemMessageToAzureOpenAiSystemMessage(
message as SystemMessage
);
case 'function':
return mapFunctionMessageToAzureOpenAiFunctionMessage(message);
return mapFunctionMessageToAzureOpenAiFunctionMessage(
message as FunctionMessage
);
case 'tool':
return mapToolMessageToAzureOpenAiToolMessage(message as ToolMessage);
default:
throw new Error(`Unsupported message type: ${message.getType()}`);
throw new Error(`Unsupported message type: ${message.type}`);
}
}

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2 changes: 2 additions & 0 deletions packages/langchain/src/orchestration/__snapshots__/client.test.ts.snap
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Expand Up @@ -157,7 +157,9 @@ Overall, the SAP Cloud SDK is an essential tool for developers looking to build
"tool_call_chunks": [],
"tool_calls": [],
"usage_metadata": {
"input_token_details": {},
"input_tokens": 17,
"output_token_details": {},
"output_tokens": 271,
"total_tokens": 288,
},
Expand Down
2 changes: 1 addition & 1 deletion packages/langchain/src/orchestration/client.test.ts
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Expand Up @@ -210,7 +210,7 @@ describe('orchestration service client', () => {
);
const client = new OrchestrationClient(config, { maxRetries: 0 });
await expect(client.stream('Hello!', { timeout: 1000 })).rejects.toThrow(
'AbortError'
'Aborted'
);
});
});
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12 changes: 7 additions & 5 deletions packages/langchain/src/orchestration/util.ts
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Expand Up @@ -108,17 +108,19 @@ export function isTemplateRef(
*/
// TODO: Add mapping of refusal property, once LangChain base class supports it natively.
function mapBaseMessageToChatMessage(message: BaseMessage): ChatMessage {
switch (message.getType()) {
switch (message.type) {
case 'ai':
return mapAiMessageToOrchestrationAssistantMessage(message);
return mapAiMessageToOrchestrationAssistantMessage(message as AIMessage);
case 'human':
return mapHumanMessageToChatMessage(message);
return mapHumanMessageToChatMessage(message as HumanMessage);
case 'system':
return mapSystemMessageToOrchestrationSystemMessage(message);
return mapSystemMessageToOrchestrationSystemMessage(
message as SystemMessage
);
case 'tool':
return mapToolMessageToOrchestrationToolMessage(message as ToolMessage);
default:
throw new Error(`Unsupported message type: ${message.getType()}`);
throw new Error(`Unsupported message type: ${message.type}`);
}
}

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5 changes: 2 additions & 3 deletions packages/orchestration/src/orchestration-client.test.ts
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Expand Up @@ -597,13 +597,12 @@ describe('orchestration service client', () => {
).toThrowErrorMatchingInlineSnapshot(`
"Prompt Template YAML does not conform to the defined type. Validation errors: [
{
"code": "invalid_type",
"expected": "object",
"received": "undefined",
"code": "invalid_type",
"path": [
"spec"
],
"message": "Required"
"message": "Invalid input: expected object, received undefined"
}
]"
`);
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2 changes: 1 addition & 1 deletion packages/prompt-registry/package.json
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Expand Up @@ -31,6 +31,6 @@
},
"dependencies": {
"@sap-ai-sdk/core": "workspace:^",
"zod": "^3.25.76"
"zod": "^4.1.12"
}
}
22 changes: 11 additions & 11 deletions packages/prompt-registry/src/zod/prompt-registry.zod.ts
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Expand Up @@ -185,7 +185,7 @@ export const registryControllerPromptControllerCreateUpdatePromptTemplateBody =
export const registryControllerPromptControllerCreateUpdatePromptTemplateResponse =
zod.object({
message: zod.string(),
id: zod.string().uuid(),
id: zod.uuid(),
scenario: zod.string(),
name: zod.string(),
version: zod.string()
Expand Down Expand Up @@ -227,7 +227,7 @@ export const registryControllerPromptControllerListPromptTemplatesResponse =
count: zod.number(),
resources: zod.array(
zod.object({
id: zod.string().uuid().optional(),
id: zod.uuid().optional(),
name: zod.string().optional(),
version: zod.string().optional(),
scenario: zod.string().optional(),
Expand Down Expand Up @@ -407,7 +407,7 @@ export const registryControllerPromptControllerListPromptTemplateHistoryResponse
count: zod.number(),
resources: zod.array(
zod.object({
id: zod.string().uuid().optional(),
id: zod.uuid().optional(),
name: zod.string().optional(),
version: zod.string().optional(),
scenario: zod.string().optional(),
Expand Down Expand Up @@ -566,7 +566,7 @@ export const registryControllerPromptControllerListPromptTemplateHistoryResponse
*/
export const registryControllerPromptControllerGetPromptTemplateByUuidParams =
zod.object({
promptTemplateId: zod.string().uuid()
promptTemplateId: zod.uuid()
});

export const registryControllerPromptControllerGetPromptTemplateByUuidResponseSpecTemplateItemContentItemImageUrlDetailDefault =
Expand All @@ -582,7 +582,7 @@ export const registryControllerPromptControllerGetPromptTemplateByUuidResponseSp

export const registryControllerPromptControllerGetPromptTemplateByUuidResponse =
zod.object({
id: zod.string().uuid().optional(),
id: zod.uuid().optional(),
name: zod.string().optional(),
version: zod.string().optional(),
scenario: zod.string().optional(),
Expand Down Expand Up @@ -737,7 +737,7 @@ export const registryControllerPromptControllerGetPromptTemplateByUuidResponse =
*/
export const registryControllerPromptControllerDeletePromptTemplateParams =
zod.object({
promptTemplateId: zod.string().uuid()
promptTemplateId: zod.uuid()
});

export const registryControllerPromptControllerDeletePromptTemplateResponse =
Expand All @@ -756,7 +756,7 @@ export const registryControllerPromptControllerImportPromptTemplateBody =
export const registryControllerPromptControllerImportPromptTemplateResponse =
zod.object({
message: zod.string(),
id: zod.string().uuid(),
id: zod.uuid(),
scenario: zod.string(),
name: zod.string(),
version: zod.string()
Expand All @@ -767,15 +767,15 @@ export const registryControllerPromptControllerImportPromptTemplateResponse =
*/
export const registryControllerPromptControllerExportPromptTemplateParams =
zod.object({
promptTemplateId: zod.string().uuid()
promptTemplateId: zod.uuid()
});

/**
* Parse prompt template by ID.
*/
export const registryControllerPromptControllerParsePromptTemplateByIdParams =
zod.object({
promptTemplateId: zod.string().uuid()
promptTemplateId: zod.uuid()
});

export const registryControllerPromptControllerParsePromptTemplateByIdQueryMetadataDefault = false;
Expand Down Expand Up @@ -839,7 +839,7 @@ export const registryControllerPromptControllerParsePromptTemplateByIdResponse =
.optional(),
resource: zod
.object({
id: zod.string().uuid().optional(),
id: zod.uuid().optional(),
name: zod.string().optional(),
version: zod.string().optional(),
scenario: zod.string().optional(),
Expand Down Expand Up @@ -1064,7 +1064,7 @@ export const registryControllerPromptControllerParsePromptTemplateByNameVersionR
.optional(),
resource: zod
.object({
id: zod.string().uuid().optional(),
id: zod.uuid().optional(),
name: zod.string().optional(),
version: zod.string().optional(),
scenario: zod.string().optional(),
Expand Down
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