Backend with ts

[abhishek-nexgen-dev]

Description

• Add File System Utils Class for Backend

Related Issue

Fixes #134

Type of Change

• Bug fix
• New feature
• Documentation update
• Other

Checklist

• My code follows the project’s style guidelines.
• I have tested my changes locally.
• I have updated documentation (if applicable).

Additional Notes

Add anything else reviewers should know.

[Copilot]

Pull Request Overview

This PR adds a comprehensive File System Utils Class for the TypeScript backend, providing utilities for reading various file formats including CSV, XLSX, PDF, and DOCX files with LangChain integration.

Key changes include:

• Added FileSystemUtility class with methods for file operations and format-specific readers
• Added type definitions for file system operations
• Updated code formatting and removed trailing whitespace across multiple files

Reviewed Changes

Copilot reviewed 11 out of 14 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
templates/mern/Ts-Backend/src/utils/FileSystem.utility.ts	New utility class with comprehensive file system operations and document processing
templates/mern/Ts-Backend/src/type/FileSystem.type.ts	Type definitions for document and row interfaces
templates/mern/Ts-Backend/package.json	Added dependencies for LangChain, xlsx, csv-parser, and pdf-parse
templates/mern/Ts-Backend/src/validator/env.validator.ts	Code formatting improvements (quote consistency and line breaks)
templates/mern/Ts-Backend/src/utils/SendResponse.utils.ts	Code formatting improvements for better readability
Multiple config/source files	Removed trailing whitespace and empty lines

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[Copilot]

[nitpick] The conditional assignment can be simplified using optional chaining and nullish coalescing for better readability: const firstSheet = workbook.Sheets[sheetNames[0]];

Suggested change

	const firstSheet = sheetNames[0]
	? workbook.Sheets[sheetNames[0]]
	: undefined;
	const firstSheet = workbook.Sheets?.[sheetNames[0]] ?? undefined;

[abhishek-nexgen-dev]

@JoeCelaster

[JoeCelaster]

@abhishek-nexgen-dev , Yeah will see to it. Pls take a look on #149 , #148 .

[abhishek-nexgen-dev]

@abhishek-nexgen-dev , Yeah will see to it. Pls take a look on #149 , #148 .

@JoeCelaster okay

[JoeCelaster]

@abhishek-nexgen-dev , Pls make sure the backend runs properly after selecting typescript as preffered language. Add a sample video of working !. Once done we can merge !

[JoeCelaster]

@abhishek-nexgen-dev , Pls make sure the backend runs properly after selecting typescript as preffered language. Add a sample video of working !. Once done we can merge !

[abhishek-nexgen-dev]

@abhishek-nexgen-dev , Pls make sure the backend runs properly after selecting typescript as preffered language. Add a sample video of working !. Once done we can merge !

Working on it

[abhishek-nexgen-dev]

@JoeCelaster Bro when you Review it