Syntaxility Decorators

Production-ready decorators for JavaScript & TypeScript that work across all frameworks:

• Express
• NestJS
• Node.js
• React
• React Native
• Next.js
• Prisma
• Custom Node backends

Features

1. Catches all errors automatically
2. Handles Prisma/Database errors
3. Handles JWT authentication errors
4. Handles environment variable errors
5. Prevents duplicate responses
6. Provides detailed logging

@TryCatch

Automatic:

• Error capturing
• Prisma error mapping
• JWT error responses
• Environment variable validation
• Response safety
• Prisma disconnect handling

prismaSafe()

Wrap individual Prisma queries safely.

Installation

npm install syntaxility-decorators

Quick Start

Before (Traditional approach)

exports.login = async (req, res) => {
  try {
    const { email, password } = req.body;

    const user = await prisma.user.findUnique({ 
      where: { email } 
    });
    
  } catch (error) {
    return res.status(500).json({ error: "Server error" });
  } finally {
    await prisma.$disconnect();
  }
};

After (Using decorators)

1. Import TryCatch from syntaxility-decorators package to handle errors
2. Wrap Prisma queries using prismaSafe decorator to handle database errors

import { SyntaxilitYResponseManager } from "syntaxility-response-manager"; // compatible for both Javascript and TypeScript
import { TryCatch, prismaSafe } from "syntaxility-decorators"; // compatible for both Javascript and TypeScript
import { prisma } from "./prisma";

TryCatch  // from syntaxility-decorators
exports.login = async (req, res) => {
  const { email, password } = req.body;

  // Prisma query safely wrapped using prismaSafe from syntaxility-decorators
  // prismaSafe(): Prisma error handling
  const user = await prismaSafe(res, () => prisma.user.findUnique({ where: { email }, include: { role: true } }));

  return SyntaxilitYResponseManager.HTTP_200_OK(
    res,
    user,
    "Logged in successfully"
  );
};

Please wait for more features

Upcoming features

1. Cache results
2. CustomDecorator for custom logic
3. Log entry/exit
4. RateLimit for throttling
5. TryCatch for error handling (DONE)
6. Wrap for Prisma queries
7. PrismaSafe for Prisma error handling (DONE)