38 lines
1.3 KiB
TypeScript
38 lines
1.3 KiB
TypeScript
import { AnthropicInput, ChatAnthropic as LangchainChatAnthropic } from '@langchain/anthropic'
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import { type BaseChatModelParams } from '@langchain/core/language_models/chat_models'
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import { IVisionChatModal, IMultiModalOption } from '../../../src'
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const DEFAULT_IMAGE_MODEL = 'claude-3-5-haiku-latest'
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const DEFAULT_IMAGE_MAX_TOKEN = 2048
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export class ChatAnthropic extends LangchainChatAnthropic implements IVisionChatModal {
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configuredModel: string
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configuredMaxToken: number
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multiModalOption: IMultiModalOption
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id: string
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constructor(id: string, fields?: Partial<AnthropicInput> & BaseChatModelParams) {
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// @ts-ignore
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super(fields ?? {})
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this.id = id
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this.configuredModel = fields?.modelName || ''
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this.configuredMaxToken = fields?.maxTokens ?? 2048
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}
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revertToOriginalModel(): void {
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this.modelName = this.configuredModel
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this.maxTokens = this.configuredMaxToken
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}
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setMultiModalOption(multiModalOption: IMultiModalOption): void {
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this.multiModalOption = multiModalOption
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}
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setVisionModel(): void {
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if (!this.modelName.startsWith('claude-3')) {
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this.modelName = DEFAULT_IMAGE_MODEL
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this.maxTokens = this.configuredMaxToken ? this.configuredMaxToken : DEFAULT_IMAGE_MAX_TOKEN
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}
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}
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}
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