afraid

😧 Afraid?! You don't need to be: Incoming data of your express route is validated! Type inference included!

• Installation
• Usage
• Usage with classes
• Generating swagger documentation

Installation

npm install afraid --save --no-optional

Usage

import {query, f, fail} from 'afraid';
import * as express from 'express';
 
const app = express();
 
app.get('/users', [
    query(
        f('limit').int(),
        f('offset').int(),
        f('filters').string().array().opt(),
    ),
    fail,
], (req, res, next) => {
    // ...
});

Using classes for validation and transformation

Installation

Omitting --no-optional will install required packages class-transformer and reflect-metadata automatically

npm install afraid --save 

Configuration

The following flags in tsconfig.json:

{
  "experimentalDecorators": true,
  "emitDecoratorMetadata": true
}

Usage

import {query, Field, IsInt, fail} from 'afraid'
import * as express from 'express';
 
const app = express();
 
class UserDTO {
    @Field name: string;
    @IsInt() @Field age: number;
}
 
app.post('/users', [
    body(UserDTO),
    fail,
], (req, res, next) => {
    // ...
});

Swagger documentation

Use afraid-swagger to create swagger documentation from afraid middlewares.