add format prompt values to prompt template

packages/components/nodes/prompts/PromptTemplate/PromptTemplate.ts

@@ -1,6 +1,6 @@
-import { INode, INodeData, INodeParams } from '../../../src/Interface'
+import { ICommonObject, INode, INodeData, INodeParams, PromptTemplate } from '../../../src/Interface'
 import { getBaseClasses, getInputVariables } from '../../../src/utils'
-import { PromptTemplate, PromptTemplateInput } from 'langchain/prompts'
+import { PromptTemplateInput } from 'langchain/prompts'
 
 class PromptTemplate_Prompts implements INode {
     label: string
@@ -19,20 +19,40 @@ class PromptTemplate_Prompts implements INode {
         this.icon = 'prompt.svg'
         this.category = 'Prompts'
         this.description = 'Schema to represent a basic prompt for an LLM'
-        this.baseClasses = [this.type, ...getBaseClasses(PromptTemplate)]
+        this.baseClasses = [...getBaseClasses(PromptTemplate)]
         this.inputs = [
             {
                 label: 'Template',
                 name: 'template',
                 type: 'string',
-                rows: 5,
+                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
+        const promptValuesStr = nodeData.inputs?.promptValues as string
+
+        let promptValues: ICommonObject = {}
+        if (promptValuesStr) {
+            promptValues = JSON.parse(promptValuesStr.replace(/\s/g, ''))
+        }
+
         const inputVariables = getInputVariables(template)
 
         try {
@@ -41,6 +61,7 @@ class PromptTemplate_Prompts implements INode {
                 inputVariables
             }
             const prompt = new PromptTemplate(options)
+            prompt.promptValues = promptValues
             return prompt
         } catch (e) {
             throw new Error(e)