137 lines
5.2 KiB
TypeScript
137 lines
5.2 KiB
TypeScript
import { BaseCache } from '@langchain/core/caches'
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import { BaseLLMParams } from '@langchain/core/language_models/llms'
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import { ICommonObject, INode, INodeData, INodeParams } from '../../../src/Interface'
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import { getBaseClasses, getCredentialData, getCredentialParam } from '../../../src/utils'
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import { Replicate, ReplicateInput } from './core'
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class Replicate_LLMs implements INode {
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label: string
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name: string
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version: number
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type: string
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icon: string
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category: string
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description: string
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baseClasses: string[]
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credential: INodeParams
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inputs: INodeParams[]
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constructor() {
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this.label = 'Replicate'
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this.name = 'replicate'
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this.version = 2.0
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this.type = 'Replicate'
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this.icon = 'replicate.svg'
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this.category = 'LLMs'
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this.description = 'Use Replicate to run open source models on cloud'
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this.baseClasses = [this.type, 'BaseChatModel', ...getBaseClasses(Replicate)]
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this.credential = {
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label: 'Connect Credential',
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name: 'credential',
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type: 'credential',
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credentialNames: ['replicateApi']
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}
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this.inputs = [
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{
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label: 'Cache',
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name: 'cache',
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type: 'BaseCache',
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optional: true
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},
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{
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label: 'Model',
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name: 'model',
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type: 'string',
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placeholder: 'a16z-infra/llama13b-v2-chat:df7690f1994d94e96ad9d568eac121aecf50684a0b0963b25a41cc40061269e5',
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optional: true
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},
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{
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label: 'Temperature',
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name: 'temperature',
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type: 'number',
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step: 0.1,
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description:
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'Adjusts randomness of outputs, greater than 1 is random and 0 is deterministic, 0.75 is a good starting value.',
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default: 0.7,
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optional: true
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},
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{
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label: 'Max Tokens',
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name: 'maxTokens',
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type: 'number',
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step: 1,
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description: 'Maximum number of tokens to generate. A word is generally 2-3 tokens',
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optional: true,
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additionalParams: true
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},
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{
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label: 'Top Probability',
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name: 'topP',
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type: 'number',
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step: 0.1,
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description:
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'When decoding text, samples from the top p percentage of most likely tokens; lower to ignore less likely tokens',
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optional: true,
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additionalParams: true
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},
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{
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label: 'Repetition Penalty',
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name: 'repetitionPenalty',
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type: 'number',
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step: 0.1,
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description:
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'Penalty for repeated words in generated text; 1 is no penalty, values greater than 1 discourage repetition, less than 1 encourage it. (minimum: 0.01; maximum: 5)',
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optional: true,
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additionalParams: true
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},
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{
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label: 'Additional Inputs',
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name: 'additionalInputs',
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type: 'json',
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description:
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'Each model has different parameters, refer to the specific model accepted inputs. For example: <a target="_blank" href="https://replicate.com/a16z-infra/llama13b-v2-chat/api#inputs">llama13b-v2</a>',
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additionalParams: true,
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optional: true
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}
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]
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}
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async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
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const modelName = nodeData.inputs?.model as `${string}/${string}` | `${string}/${string}:${string}`
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const temperature = nodeData.inputs?.temperature as string
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const maxTokens = nodeData.inputs?.maxTokens as string
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const topP = nodeData.inputs?.topP as string
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const repetitionPenalty = nodeData.inputs?.repetitionPenalty as string
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const additionalInputs = nodeData.inputs?.additionalInputs as string
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const credentialData = await getCredentialData(nodeData.credential ?? '', options)
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const apiKey = getCredentialParam('replicateApiKey', credentialData, nodeData)
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const cache = nodeData.inputs?.cache as BaseCache
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const obj: ReplicateInput & BaseLLMParams = {
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model: modelName,
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apiKey
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}
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let inputs: any = {}
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if (maxTokens) inputs.max_length = parseInt(maxTokens, 10)
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if (temperature) inputs.temperature = parseFloat(temperature)
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if (topP) inputs.top_p = parseFloat(topP)
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if (repetitionPenalty) inputs.repetition_penalty = parseFloat(repetitionPenalty)
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if (additionalInputs) {
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const parsedInputs =
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typeof additionalInputs === 'object' ? additionalInputs : additionalInputs ? JSON.parse(additionalInputs) : {}
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inputs = { ...inputs, ...parsedInputs }
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}
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if (Object.keys(inputs).length) obj.input = inputs
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if (cache) obj.cache = cache
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const model = new Replicate(obj)
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return model
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}
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}
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module.exports = { nodeClass: Replicate_LLMs }
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