upgrade langchain version 0.1.0

packages/components/nodes/tools/ReadFile/ReadFile.ts

@@ -1,7 +1,14 @@
+import { z } from 'zod'
+import { StructuredTool, ToolParams } from '@langchain/core/tools'
+import { Serializable } from '@langchain/core/load/serializable'
+import { NodeFileStore } from 'langchain/stores/file/node'
 import { INode, INodeData, INodeParams } from '../../../src/Interface'
 import { getBaseClasses } from '../../../src/utils'
-import { ReadFileTool } from 'langchain/tools'
-import { NodeFileStore } from 'langchain/stores/file/node'
+
+abstract class BaseFileStore extends Serializable {
+    abstract readFile(path: string): Promise<string>
+    abstract writeFile(path: string, contents: string): Promise<void>
+}
 
 class ReadFile_Tools implements INode {
     label: string
@@ -41,4 +48,38 @@ class ReadFile_Tools implements INode {
     }
 }
 
+interface ReadFileParams extends ToolParams {
+    store: BaseFileStore
+}
+
+/**
+ * Class for reading files from the disk. Extends the StructuredTool
+ * class.
+ */
+export class ReadFileTool extends StructuredTool {
+    static lc_name() {
+        return 'ReadFileTool'
+    }
+
+    schema = z.object({
+        file_path: z.string().describe('name of file')
+    })
+
+    name = 'read_file'
+
+    description = 'Read file from disk'
+
+    store: BaseFileStore
+
+    constructor({ store }: ReadFileParams) {
+        super(...arguments)
+
+        this.store = store
+    }
+
+    async _call({ file_path }: z.infer<typeof this.schema>) {
+        return await this.store.readFile(file_path)
+    }
+}
+
 module.exports = { nodeClass: ReadFile_Tools }