Add more nodes for agents, loaders

packages/components/nodes/vectorstores/Chroma_Existing/Chroma_Existing.ts

@@ -0,0 +1,52 @@
+import { INode, INodeData, INodeParams } from '../../../src/Interface'
+
+class Chroma_Existing_VectorStores implements INode {
+    label: string
+    name: string
+    description: string
+    type: string
+    icon: string
+    category: string
+    baseClasses: string[]
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'Chroma Load Existing Index'
+        this.name = 'chromaExistingIndex'
+        this.type = 'Chroma'
+        this.icon = 'chroma.svg'
+        this.category = 'Vector Stores'
+        this.description = 'Load existing index from Chroma (i.e: Document has been upserted)'
+        this.inputs = [
+            {
+                label: 'Embeddings',
+                name: 'embeddings',
+                type: 'Embeddings'
+            },
+            {
+                label: 'Collection Name',
+                name: 'collectionName',
+                type: 'string'
+            }
+        ]
+    }
+
+    async getBaseClasses(): Promise<string[]> {
+        return ['BaseRetriever']
+    }
+
+    async init(nodeData: INodeData): Promise<any> {
+        const { Chroma } = await import('langchain/vectorstores')
+
+        const collectionName = nodeData.inputs?.collectionName as string
+        const embeddings = nodeData.inputs?.embeddings
+
+        const vectorStore = await Chroma.fromExistingCollection(embeddings, {
+            collectionName
+        })
+        const retriever = vectorStore.asRetriever()
+        return retriever
+    }
+}
+
+module.exports = { nodeClass: Chroma_Existing_VectorStores }

packages/components/nodes/vectorstores/Chroma_Existing/chroma.svg

@@ -0,0 +1,7 @@
+<svg width="209" height="135" viewBox="0 0 209 135" fill="none" xmlns="http://www.w3.org/2000/svg">
+<ellipse cx="136.019" cy="67.2304" rx="66.6667" ry="64" fill="#FFDE2D"/>
+<ellipse cx="69.352" cy="67.2304" rx="66.6667" ry="64" fill="#327EFF"/>
+<path d="M2.68528 67.2304C2.68527 31.8842 32.5329 3.23047 69.3519 3.23047L69.3519 67.2304L2.68528 67.2304Z" fill="#327EFF"/>
+<path d="M136.019 67.2305C136.019 102.577 106.171 131.23 69.3519 131.23L69.3519 67.2305L136.019 67.2305Z" fill="#FF6446"/>
+<path d="M69.352 67.2304C69.352 31.8842 99.1997 3.23047 136.019 3.23047L136.019 67.2304L69.352 67.2304Z" fill="#FF6446"/>
+</svg>