Initial push

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

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+import { INode, INodeData, INodeParams } from '../../../src/Interface'
+import { getBaseClasses, getInputVariables } from '../../../src/utils'
+
+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. Template can only contains 1 literal string {}'
+        this.inputs = [
+            {
+                label: 'Template',
+                name: 'template',
+                type: 'string',
+                rows: 5,
+                default: 'What is a good name for a company that makes {product}?',
+                placeholder: 'What is a good name for a company that makes {product}?'
+            }
+        ]
+    }
+
+    async getBaseClasses(): Promise<string[]> {
+        const { PromptTemplate } = await import('langchain/prompts')
+        return getBaseClasses(PromptTemplate)
+    }
+
+    async init(nodeData: INodeData): Promise<any> {
+        const { PromptTemplate } = await import('langchain/prompts')
+
+        const template = nodeData.inputs?.template as string
+        const inputVariables = getInputVariables(template)
+
+        try {
+            const prompt = new PromptTemplate({
+                template,
+                inputVariables: inputVariables
+            })
+            return prompt
+        } catch (e) {
+            throw new Error(e)
+        }
+    }
+}
+
+module.exports = { nodeClass: PromptTemplate_Prompts }

packages/components/nodes/prompts/PromptTemplate/prompt.svg

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+<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-terminal-2" width="24" height="24" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
+   <path stroke="none" d="M0 0h24v24H0z" fill="none"></path>
+   <path d="M8 9l3 3l-3 3"></path>
+   <path d="M13 15l3 0"></path>
+   <path d="M3 4m0 2a2 2 0 0 1 2 -2h14a2 2 0 0 1 2 2v12a2 2 0 0 1 -2 2h-14a2 2 0 0 1 -2 -2z"></path>
+</svg>