@langchain/anthropic
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Anthropic integrations for LangChain.js
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{"version":3,"file":"params.cjs","names":[],"sources":["../../src/utils/params.ts"],"sourcesContent":["import { AnthropicBeta } from \"@anthropic-ai/sdk/resources\";\n\nimport {\n AnthropicInvocationParams,\n AnthropicOutputConfig,\n AnthropicThinkingConfigParam,\n} from \"../types.js\";\n\ntype InvocationCompatibilityFields = {\n model?: string;\n thinking: AnthropicThinkingConfigParam;\n outputConfig?: AnthropicOutputConfig;\n topK?: number;\n topP?: number;\n temperature?: number;\n};\n\nconst ADAPTIVE_ONLY_MODEL_PREFIXES = [\n \"claude-opus-4-7\",\n \"claude-opus-4-8\",\n \"claude-opus-5\",\n \"claude-fable-5\",\n \"claude-mythos-5\",\n \"claude-mythos-preview\",\n] as const;\n\nfunction modelStartsWithAnyPrefix(\n model: string | undefined,\n prefixes: readonly string[]\n): boolean {\n return model ? prefixes.some((prefix) => model.startsWith(prefix)) : false;\n}\n\nfunction isThinkingEnabled(thinking: AnthropicThinkingConfigParam): boolean {\n return thinking.type === \"enabled\" || thinking.type === \"adaptive\";\n}\n\nexport function isOpus47Model(model?: string): boolean {\n return modelStartsWithAnyPrefix(model, [\"claude-opus-4-7\"]);\n}\n\nexport function isAdaptiveOnlyModel(model?: string): boolean {\n return modelStartsWithAnyPrefix(model, ADAPTIVE_ONLY_MODEL_PREFIXES);\n}\n\nexport function getTaskBudgetBetas(\n model?: string,\n outputConfig?: AnthropicOutputConfig\n): AnthropicBeta[] {\n const hasTaskBudget =\n outputConfig &&\n typeof outputConfig === \"object\" &&\n \"task_budget\" in outputConfig &&\n outputConfig.task_budget != null;\n\n return isOpus47Model(model) && hasTaskBudget\n ? ([\"task-budgets-2026-03-13\"] as AnthropicBeta[])\n : [];\n}\n\nexport function validateInvocationParamCompatibility(\n fields: InvocationCompatibilityFields\n): void {\n const { model, thinking, outputConfig, topK, topP, temperature } = fields;\n const adaptiveOnlyModel = isAdaptiveOnlyModel(model);\n const modelName = model ?? \"this model\";\n\n if (adaptiveOnlyModel && thinking.type === \"enabled\") {\n throw new Error(\n `thinking.type=\"enabled\" is not supported for ${modelName}; use thinking.type=\"adaptive\" instead`\n );\n }\n if (\n adaptiveOnlyModel &&\n typeof thinking === \"object\" &&\n thinking != null &&\n \"budget_tokens\" in thinking\n ) {\n throw new Error(\n `thinking.budget_tokens is not supported for ${modelName}; use outputConfig.effort instead`\n );\n }\n if (\n modelStartsWithAnyPrefix(model, [\"claude-opus-5\"]) &&\n thinking.type === \"disabled\" &&\n (outputConfig?.effort === \"xhigh\" || outputConfig?.effort === \"max\")\n ) {\n throw new Error(\n `thinking.type=\"disabled\" is not supported for ${modelName} with outputConfig.effort=\"${outputConfig.effort}\"; use thinking.type=\"adaptive\" or omit thinking instead`\n );\n }\n if (adaptiveOnlyModel) {\n if (topK !== undefined) {\n throw new Error(\n `topK is not supported for ${modelName}; omit topK/topP/temperature or use model prompting instead`\n );\n }\n if (topP !== undefined && topP !== 1) {\n throw new Error(\n `topP is not supported for ${modelName} when set to non-default values`\n );\n }\n if (temperature !== undefined && temperature !== 1) {\n throw new Error(\n `temperature is not supported for ${modelName} when set to non-default values`\n );\n }\n }\n\n if (isThinkingEnabled(thinking)) {\n if (topK !== undefined) {\n throw new Error(\"topK is not supported when thinking is enabled\");\n }\n if (topP !== undefined) {\n throw new Error(\"topP is not supported when thinking is enabled\");\n }\n if (temperature !== undefined && temperature !== 1) {\n throw new Error(\"temperature is not supported when thinking is enabled\");\n }\n }\n}\n\nexport function getSamplingParams(\n fields: InvocationCompatibilityFields\n): Pick<AnthropicInvocationParams, \"temperature\" | \"top_k\" | \"top_p\"> {\n const { model, thinking, topK, topP, temperature } = fields;\n const output: Pick<\n AnthropicInvocationParams,\n \"temperature\" | \"top_k\" | \"top_p\"\n > = {};\n\n if (isThinkingEnabled(thinking) || isAdaptiveOnlyModel(model)) {\n return output;\n }\n\n if (temperature !== undefined) {\n output.temperature = temperature;\n }\n if (topK !== undefined) {\n output.top_k = topK;\n }\n if (topP !== undefined) {\n output.top_p = topP;\n }\n\n return output;\n}\n"],"mappings":";AAiBA,MAAM,+BAA+B;CACnC;CACA;CACA;CACA;CACA;CACA;CACD;AAED,SAAS,yBACP,OACA,UACS;AACT,QAAO,QAAQ,SAAS,MAAM,WAAW,MAAM,WAAW,OAAO,CAAC,GAAG;;AAGvE,SAAS,kBAAkB,UAAiD;AAC1E,QAAO,SAAS,SAAS,aAAa,SAAS,SAAS;;AAG1D,SAAgB,cAAc,OAAyB;AACrD,QAAO,yBAAyB,OAAO,CAAC,kBAAkB,CAAC;;AAG7D,SAAgB,oBAAoB,OAAyB;AAC3D,QAAO,yBAAyB,OAAO,6BAA6B;;AAGtE,SAAgB,mBACd,OACA,cACiB;CACjB,MAAM,gBACJ,gBACA,OAAO,iBAAiB,YACxB,iBAAiB,gBACjB,aAAa,eAAe;AAE9B,QAAO,cAAc,MAAM,IAAI,gBAC1B,CAAC,0BAA0B,GAC5B,EAAE;;AAGR,SAAgB,qCACd,QACM;CACN,MAAM,EAAE,OAAO,UAAU,cAAc,MAAM,MAAM,gBAAgB;CACnE,MAAM,oBAAoB,oBAAoB,MAAM;CACpD,MAAM,YAAY,SAAS;AAE3B,KAAI,qBAAqB,SAAS,SAAS,UACzC,OAAM,IAAI,MACR,gDAAgD,UAAU,wCAC3D;AAEH,KACE,qBACA,OAAO,aAAa,YACpB,YAAY,QACZ,mBAAmB,SAEnB,OAAM,IAAI,MACR,+CAA+C,UAAU,mCAC1D;AAEH,KACE,yBAAyB,OAAO,CAAC,gBAAgB,CAAC,IAClD,SAAS,SAAS,eACjB,cAAc,WAAW,WAAW,cAAc,WAAW,OAE9D,OAAM,IAAI,MACR,iDAAiD,UAAU,6BAA6B,aAAa,OAAO,0DAC7G;AAEH,KAAI,mBAAmB;AACrB,MAAI,SAAS,KAAA,EACX,OAAM,IAAI,MACR,6BAA6B,UAAU,6DACxC;AAEH,MAAI,SAAS,KAAA,KAAa,SAAS,EACjC,OAAM,IAAI,MACR,6BAA6B,UAAU,iCACxC;AAEH,MAAI,gBAAgB,KAAA,KAAa,gBAAgB,EAC/C,OAAM,IAAI,MACR,oCAAoC,UAAU,iCAC/C;;AAIL,KAAI,kBAAkB,SAAS,EAAE;AAC/B,MAAI,SAAS,KAAA,EACX,OAAM,IAAI,MAAM,iDAAiD;AAEnE,MAAI,SAAS,KAAA,EACX,OAAM,IAAI,MAAM,iDAAiD;AAEnE,MAAI,gBAAgB,KAAA,KAAa,gBAAgB,EAC/C,OAAM,IAAI,MAAM,wDAAwD;;;AAK9E,SAAgB,kBACd,QACoE;CACpE,MAAM,EAAE,OAAO,UAAU,MAAM,MAAM,gBAAgB;CACrD,MAAM,SAGF,EAAE;AAEN,KAAI,kBAAkB,SAAS,IAAI,oBAAoB,MAAM,CAC3D,QAAO;AAGT,KAAI,gBAAgB,KAAA,EAClB,QAAO,cAAc;AAEvB,KAAI,SAAS,KAAA,EACX,QAAO,QAAQ;AAEjB,KAAI,SAAS,KAAA,EACX,QAAO,QAAQ;AAGjB,QAAO"}