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import { ICommonObject, INode, INodeData, INodeParams, PromptTemplate } from '../../../src/Interface'
import { getBaseClasses, getInputVariables, returnJSONStr } from '../../../src/utils'
import { PromptTemplateInput } from 'langchain/prompts'
class PromptTemplate_Prompts implements INode {
label: string
name: string
description: string
type: string
icon: string
category: string
baseClasses: string[]
inputs: INodeParams[]
constructor() {
this.label = 'Prompt Template'
this.name = 'promptTemplate'
this.type = 'PromptTemplate'
this.icon = 'prompt.svg'
this.category = 'Prompts'
this.description = 'Schema to represent a basic prompt for an LLM'
this.baseClasses = [...getBaseClasses(PromptTemplate)]
this.inputs = [
{
label: 'Template',
name: 'template',
type: 'string',
rows: 4,
placeholder: `What is a good name for a company that makes {product}?`
},
{
label: 'Format Prompt Values',
name: 'promptValues',
type: 'string',
rows: 4,
placeholder: `{
"input_language": "English",
"output_language": "French"
}`,
optional: true,
acceptVariable: true,
list: true
}
]
}
async init(nodeData: INodeData): Promise<any> {
const template = nodeData.inputs?.template as string
let promptValuesStr = nodeData.inputs?.promptValues as string
let promptValues: ICommonObject = {}
if (promptValuesStr) {
promptValuesStr = promptValuesStr.replace(/\s/g, '')
promptValues = JSON.parse(returnJSONStr(promptValuesStr))
}
const inputVariables = getInputVariables(template)
try {
const options: PromptTemplateInput = {
template,
inputVariables
}
const prompt = new PromptTemplate(options)
prompt.promptValues = promptValues
return prompt
} catch (e) {
throw new Error(e)
}
}
}
module.exports = { nodeClass: PromptTemplate_Prompts }
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