@alotech/common
v1.1.1
Published
A Typescript simple library with some basics implementation to errors and middlewares.
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Common library
A Typescript simple library with some basics implementation to errors and middlewares.
How to install
$ yarn add @alotech/common
How to use
import express from 'express';
import { errorHandler, NotFoundError } from '@alotech/common';
const app = express();
app.all('*', async (req, res, next) => {
throw new NotFoundError();
});
app.use(errorHandler);
app.listen(3000, () => {
console.log('Listening on port 3000!');
});
Above one example of how to use the errorHandler and throw a custom NotFoundError();
Validate request example
Notice this use express-validator
import express, { Request, Response } from 'express';
import { body } from 'express-validator';
import { validateRequest, BadRequestError } from '@alotech/common';
const router = express.Router();
router.post(
'/api/users/signin',
[
body('email').isEmail().withMessage('Email must be valid!'),
body('password').trim().notEmpty().withMessage('You must supply a password'),
],
validateRequest,
async (req: Request, res: Response) => {
const { email, password } = req.body;
...
...
if (!existingUser) {
throw new BadRequestError('Invalid credentials');
}
...
...
}
);
...
Errors
- BadRequestError
- DatabaseConnectionError
- NotAuthorizedError
- NotFoundError
- RequestValidationError
Middlewares
- errorHandler